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1دورية أكاديمية
المؤلفون: Aubourg, Éric, Bailey, Stephen, Bautista, Julian E, Beutler, Florian, Bhardwaj, Vaishali, Bizyaev, Dmitry, Blanton, Michael, Blomqvist, Michael, Bolton, Adam S, Bovy, Jo, Brewington, Howard, Brinkmann, J, Brownstein, Joel R, Burden, Angela, Busca, Nicolás G, Carithers, William, Chuang, Chia-Hsun, Comparat, Johan, Croft, Rupert AC, Cuesta, Antonio J, Dawson, Kyle S, Delubac, Timothée, Eisenstein, Daniel J, Font-Ribera, Andreu, Ge, Jian, Le Goff, J-M, Gontcho, Satya Gontcho A, Gott, J Richard, Gunn, James E, Guo, Hong, Guy, Julien, Hamilton, Jean-Christophe, Ho, Shirley, Honscheid, Klaus, Howlett, Cullan, Kirkby, David, Kitaura, Francisco S, Kneib, Jean-Paul, Lee, Khee-Gan, Long, Dan, Lupton, Robert H, Magaña, Mariana Vargas, Malanushenko, Viktor, Malanushenko, Elena, Manera, Marc, Maraston, Claudia, Margala, Daniel, McBride, Cameron K, Miralda-Escudé, Jordi, Myers, Adam D, Nichol, Robert C, Noterdaeme, Pasquier, Nuza, Sebastián E, Olmstead, Matthew D, Oravetz, Daniel, Pâris, Isabelle, Padmanabhan, Nikhil, Palanque-Delabrouille, Nathalie, Pan, Kaike, Pellejero-Ibanez, Marcos, Percival, Will J, Petitjean, Patrick, Pieri, Matthew M, Prada, Francisco, Reid, Beth, Rich, James, Roe, Natalie A, Ross, Ashley J, Ross, Nicholas P, Rossi, Graziano, Rubiño-Martín, Jose Alberto, Sánchez, Ariel G, Samushia, Lado, Santos, Ricardo Tanausú Génova, Scóccola, Claudia G, Schlegel, David J, Schneider, Donald P, Seo, Hee-Jong, Sheldon, Erin, Simmons, Audrey, Skibba, Ramin A, Slosar, Anže, Strauss, Michael A, Thomas, Daniel, Tinker, Jeremy L, Tojeiro, Rita, Vazquez, Jose Alberto, Viel, Matteo, Wake, David A, Weaver, Benjamin A, Weinberg, David H, Wood-Vasey, WM, Yèche, Christophe, Zehavi, Idit, Zhao, Gong-Bo
المصدر: Physical Review D. 92(12)
مصطلحات موضوعية: Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, astro-ph.CO, gr-qc, hep-ex
الوصف: We derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwave background (CMB) data and a recent reanalysis of Type Ia supernova (SN) data. In particular, we take advantage of high-precision BAO measurements from galaxy clustering and the Lyman-α forest (LyaF) in the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). Treating the BAO scale as an uncalibrated standard ruler, BAO data alone yield a high confidence detection of dark energy; in combination with the CMB angular acoustic scale they further imply a nearly flat universe. Adding the CMB-calibrated physical scale of the sound horizon, the combination of BAO and SN data into an "inverse distance ladder" yields a measurement of H0=67.3±1.1 km s-1 Mpc-1, with 1.7% precision. This measurement assumes standard prerecombination physics but is insensitive to assumptions about dark energy or space curvature, so agreement with CMB-based estimates that assume a flat ΛCDM cosmology is an important corroboration of this minimal cosmological model. For constant dark energy (Λ), our BAO+SN+CMB combination yields matter density Ωm=0.301±0.008 and curvature Ωk=-0.003±0.003. When we allow more general forms of evolving dark energy, the BAO+SN+CMB parameter constraints are always consistent with flat ΛCDM values at ≈1σ. While the overall χ2 of model fits is satisfactory, the LyaF BAO measurements are in moderate (2-2.5σ) tension with model predictions. Models with early dark energy that tracks the dominant energy component at high redshift remain consistent with our expansion history constraints, and they yield a higher H0 and lower matter clustering amplitude, improving agreement with some low redshift observations. Expansion history alone yields an upper limit on the summed mass of neutrino species, mν
وصف الملف: application/pdf
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2دورية أكاديمية
المؤلفون: Farr, J, Font-Ribera, A, des Bourboux, HDM, Munoz-Gutierrez, A, Javier Sanchez, F, Pontzen, A, Xochitl Gonzalez-Morales, A, Alonso, D, Brooks, D, Doel, P, Etourneau, T, Guy, J, Le Goff, J-M, de la Macorra, A, Palanque-Delabrouille, N, Perez-Rafols, I, Rich, J, Slosar, A, Tarle, G, Yutong, D, Zhang, K
الوصف: The statistical power of Lyman-α forest Baryon Acoustic Oscillation (BAO) measurements is set to increase significantly in the coming years as new instruments such as the Dark Energy Spectroscopic Instrument deliver progressively more constraining data. Generating mock datasets for such measurements will be important for validating analysis pipelines and evaluating the effects of systematics. With such studies in mind, we present LyaCoLoRe: A package for producing synthetic Lyman-α forest survey datasets for BAO analyses. LyaCoLoRe transforms initial Gaussian random field skewers into skewers of transmitted flux fraction via a number of fast approximations. In this work we explain the methods of producing mock datasets used in LyaCoLoRe, and then measure correlation functions on a suite of realisations of such data. We demonstrate that we are able to recover the correct BAO signal, as well as large-scale bias parameters similar to literature values. Finally, we briefly describe methods to add further astrophysical effects to our skewers-high column density systems and metal absorbers-which act as potential complications for BAO analyses.
العلاقة: https://ora.ox.ac.uk/objects/uuid:502d4586-0a2d-438e-95f4-c03e4114609fTest; https://doi.org/10.1088/1475-7516/2020/03/068Test
الإتاحة: https://doi.org/10.1088/1475-7516/2020/03/068Test
https://ora.ox.ac.uk/objects/uuid:502d4586-0a2d-438e-95f4-c03e4114609fTest -
3دورية أكاديمية
المؤلفون: Pâris, I, Petitjean, P, Aubourg, É, Bailey, S, Ross, NP, Myers, AD, Strauss, MA, Anderson, SF, Arnau, E, Bautista, J, Bizyaev, D, Bolton, AS, Bovy, J, Brandt, WN, Brewington, H, Browstein, JR, Busca, N, Capellupo, D, Carithers, W, Croft, RAC, Dawson, K, Delubac, T, Ebelke, G, Eisenstein, DJ, Engelke, P, Fan, X, Ak, N Filiz, Finley, H, Font-Ribera, A, Ge, J, Gibson, RR, Hall, PB, Hamann, F, Hennawi, JF, Ho, S, Hogg, DW, Ivezić, Ž, Jiang, L, Kimball, AE, Kirkby, D, Kirkpatrick, JA, Lee, K-G, Le Goff, J-M, Lundgren, B, MacLeod, CL, Malanushenko, E, Malanushenko, V, Maraston, C, McGreer, ID, McMahon, RG, Miralda-Escudé, J, Muna, D, Noterdaeme, P, Oravetz, D, Palanque-Delabrouille, N, Pan, K, Perez-Fournon, I, Pieri, MM, Richards, GT, Rollinde, E, Sheldon, ES, Schlegel, DJ, Schneider, DP, Slosar, A, Shelden, A, Shen, Y, Simmons, A, Snedden, S, Suzuki, N, Tinker, J, Viel, M, Weaver, BA, Weinberg, DH, White, M, Wood-Vasey, WM, Yèche, C
مصطلحات موضوعية: catalogs, surveys, quasars: general, astro-ph.CO, Astronomical and Space Sciences, Astronomy & Astrophysics
الوصف: We present the Data Release 10 Quasar (DR10Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the first 2.5 years of the survey and that are confirmed as quasars via visual inspection of the spectra, have luminosities Mi[z = 2] 2.15 (117 668) is ~5 times greater than the number of z > 2.15 quasars known prior to BOSS. Redshifts and FWHMs are provided for the strongest emission lines (C iv, C iii, Mg ii). The catalog identifies 16 461 broad absorption line quasars and gives their characteristics. For each object, the catalog presents five-band (u, g, r, i, z) CCD-based photometry with typical accuracy of 0.03 mag and information on the optical morphology and selection method. The catalog also contains X-ray, ultraviolet, near-infrared, and radio emission properties of the quasars, when available, from other large-area surveys. The calibrated digital spectra cover the wavelength region 3600-10 500 Å at a spectral resolution in the range 1300 < R < 2500; the spectra can be retrieved from the SDSS Catalog Archive Server. We also provide a supplemental list of an additional 2376 quasars that have been identified among the galaxy targets of the SDSS-III/BOSS. © 2014 ESO.
الوصول الحر: https://escholarship.org/uc/item/17b9m4kxTest
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4دورية أكاديمية
المؤلفون: Ahumada R., Prieto C. A., Almeida A., Anders F., Anderson S. F., Andrews B. H., Anguiano B., Arcodia R., Armengaud E., Aubert M., Avila S., Avila-Reese V., Badenes C., Balland C., Barger K., Barrera-Ballesteros J. K., Basu S., Bautista J., Beaton R. L., Beers T. C., Benavides B. I. T., Bender C. F., Bernardi M., Bershady M., Beutler F., Bidin C. M., Bird J., Bizyaev D., Blanc G. A., Blanton M. R., Boquien M., Borissova J., Bovy J., Brandt W. N., Brinkmann J., Brownstein J. R., Bundy K., Bureau M., Burgasser A., Burtin E., Cano-Diaz M., Capasso R., Cappellari M., Carrera R., Chabanier S., Chaplin W., Chapman M., Cherinka B., Chiappini C., Doohyun Choi P., Chojnowski S. D., Chung H., Clerc N., Coffey D., Comerford J. M., Comparat J., Da Costa L., Cousinou M. -C., Covey K., Crane J. D., Cunha K., Ilha G. D. S., Dai Y. S., Damsted S. B., Darling J., Davidson J. W., Davies R., Dawson K., De N., De La Macorra A., De Lee N., Queiroz A. B. D. A., Deconto Machado A., De La Torre S., Dell'Agli F., Du Mas Des Bourboux H., Diamond-Stanic A. M., Dillon S., Donor J., Drory N., Duckworth C., Dwelly T., Ebelke G., Eftekharzadeh S., Davis Eigenbrot A., Elsworth Y. P., Eracleous M., Erfanianfar G., Escoffier S., Fan X., Farr E., Fernandez-Trincado J. G., Feuillet D., Finoguenov A., Fofie P., Fraser-Mckelvie A., Frinchaboy P. M., Fromenteau S., Fu H., Galbany L., Garcia R. A., Garcia-Hernandez D. A., Oehmichen L. A. G., Ge J., Maia M. A. G., Geisler D., Gelfand J., Goddy J., Gonzalez-Perez V., Grabowski K., Green P., Grier C. J., Guo H., Guy J., Harding P., Hasselquist S., Hawken A. J., Hayes C. R., Hearty F., Hekker S., Hogg D. W., Holtzman J. A., Horta D., Hou J., Hsieh B. -C., Huber D., Hunt J. A. S., Chitham J. I., Imig J., Jaber M., Angel C. E. J., Johnson J. A., Jones A. M., Jonsson H., Jullo E., Kim Y., Kinemuchi K., Kirkpatrick Iv C. C., Kite G. W., Klaene M., Kneib J. -P., Kollmeier J. A., Kong H., Kounkel M., Krishnarao D., Lacerna I., Lan T. -W., Lane R. R., Law D. R., Le Goff J. -M., Leung H. W., Lewis H., Li C., Lian J., Lin L., Long D., Longa-Peña P., Lundgren B., Lyke B. W., Ted Mackereth J., Macleod C. L., Majewski S. R., Manchado A., Maraston C., Martini P., Masseron T., Masters K. L., Mathur S., McDermid R. M., Merloni A., Merrifield M., Meszaros S., Miglio A., Minniti D., Minsley R., Miyaji T., Mohammad F. G., Mosser B., Mueller E. -M., Muna D., Muñoz-Gutierrez A., Myers A. D., Nadathur S., Nair P., Nandra K., Do Nascimento J. C., Nevin R. J., Newman J. A., Nidever D. L., Nitschelm C., Noterdaeme P., O'Connell J. E., Olmstead M. D., Oravetz D., Oravetz A., Osorio Y., Pace Z. J., Padilla N., Palanque-Delabrouille N., Palicio P. A., Pan H. -A., Pan K., Parker J., Paviot R., Peirani S., Ramrez K. P., Penny S., Percival W. J., Perez-Fournon I., Perez-Rafols I., Petitjean P., Pieri M. M., Pinsonneault M., Poovelil V. J., Povick J. T., Prakash A., Price-Whelan A. M., Raddick M. J., Raichoor A., Ray A., Rembold S. B., Rezaie M., Riffel R. A., Riffel R., Rix H. -W., Robin A. C., Roman-Lopes A., Roman-Zuñiga C., Rose B., Ross A. J., Rossi G., Rowlands K., Rubin K. H. R., Salvato M., Sanchez A. G., Sanchez-Menguiano L., Sanchez-Gallego J. R., Sayres C., Schaefer A., Schiavon R. P., Schimoia J. S., Schlafly E., Schlegel D., Schneider D. P., Schultheis M., Schwope A., Seo H. -J., Serenelli A., Shafieloo A., Shamsi S. J., Shao Z., Shen S., Shetrone M., Shirley R., Aguirre V. S., Simon J. D., Skrutskie M. F., Slosar A., Smethurst R., Sobeck J., Sodi B. C., Souto D., Stark D. V., Stassun K. G., Steinmetz M., Stello D., Stermer J., Storchi-Bergmann T., Streblyanska A., Stringfellow G. S., Stutz A., Suarez G., Sun J., Taghizadeh-Popp M., Talbot M. S., Tayar J., Thakar A. R., Theriault R., Thomas D., Thomas Z. C., Tinker J., Tojeiro R., Toledo H. H., Tremonti C. A., Troup N. W., Tuttle S., Unda-Sanzana E., Valentini M., Vargas-Gonzalez J., Vargas-Magaña M., Vazquez-Mata J. A., Vivek M., Wake D., Wang Y., Weaver B. A., Weijmans A. -M., Wild V., Wilson J. C., Wilson R. F., Wolthuis N., Wood-Vasey W. M., Yan R., Yang M., Yeche C., Zamora O., Zarrouk P., Zasowski G., Zhang K., Zhao C., Zhao G., Zheng Z., Zhu G., Zou H.
المساهمون: Ahumada R., Prieto C.A., Almeida A., Anders F., Anderson S.F., Andrews B.H., Anguiano B., Arcodia R., Armengaud E., Aubert M., Avila S., Avila-Reese V., Badenes C., Balland C., Barger K., Barrera-Ballesteros J.K., Basu S., Bautista J., Beaton R.L., Beers T.C., Benavides B.I.T., Bender C.F., Bernardi M., Bershady M., Beutler F., Bidin C.M., Bird J., Bizyaev D., Blanc G.A., Blanton M.R., Boquien M., Borissova J., Bovy J., Brandt W.N., Brinkmann J., Brownstein J.R., Bundy K., Bureau M., Burgasser A., Burtin E., Cano-Diaz M., Capasso R., Cappellari M., Carrera R., Chabanier S., Chaplin W., Chapman M., Cherinka B., Chiappini C., Doohyun Choi P., Chojnowski S.D., Chung H., Clerc N., Coffey D., Comerford J.M., Comparat J., Da Costa L., Cousinou M.-C., Covey K., Crane J.D., Cunha K., Ilha G.D.S., Dai Y.S., Damsted S.B., Darling J., Davidson J.W., Davies R., Dawson K., De N., De La Macorra A., De Lee N., Queiroz A.B.D.A., Deconto Machado A., De La Torre S., Dell'Agli F., Du Mas Des Bourboux H., Diamond-Stanic A.M., Dillon S., Donor J., Drory N., Duckworth C., Dwelly T., Ebelke G., Eftekharzadeh S., Davis Eigenbrot A., Elsworth Y.P., Eracleous M., Erfanianfar G., Escoffier S., Fan X., Farr E., Fernandez-Trincado J.G., Feuillet D., Finoguenov A., Fofie P., Fraser-Mckelvie A., Frinchaboy P.M., Fromenteau S., Fu H., Galbany L.
مصطلحات موضوعية: SDSS-IV MANGA, REDSHIFT 0.8, GALAXY, STELLAR, MASS, CATALOG, TELESCOPE, SAMPLE, MILKY, DISTANCES
الوصف: This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library "MaStar"). We also preview future SDSS-V operations (due to start in 2020), and summarize plans for the final SDSS-IV data release (DR17).
وصف الملف: ELETTRONICO
العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000571811200001; volume:249; issue:1; firstpage:1; lastpage:25; numberofpages:25; journal:ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES; info:eu-repo/grantAgreement/EC/H2020/772293; https://hdl.handle.net/11585/894930Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85088298365; https://iopscience.iop.org/article/10.3847/1538-4365/ab929eTest
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5دورية أكاديمية
المؤلفون: du Mas des Bourboux, H, Rich, J, Font-Ribera, A, de Sainte Agathe, V, Farr, J, Etourneau, T, Le Goff, J-M, Cuceu, A, Balland, C, Bautista, JE, Blomqvist, M, Brinkmann, J, Brownstein, JR, Chabanier, S, Chaussidon, E, Dawson, K, Gonzalez-Morales, AX, Guy, J, Lyke, BW, de la Macorra, A, Mueller, E-M, Myers, AD, Nitschelm, C, Gutierrez, AM, Palanque-Delabrouille, N, Parker, J, Percival, WJ, Perez-Rafols, I, Petitjean, P, Pieri, MM, Ravoux, C, Rossi, G, Schneider, DP, Seo, H-J, Slosar, A, Stermer, J, Vivek, M, Yeche, C, Youles, S
المصدر: The Astrophysical Journal , 901 (2) , Article 153. (2020)
الوصف: We present a measurement of baryonic acoustic oscillations (BAOs) from Lyα absorption and quasars at an effective redshift $z=2.33$ using the complete extended Baryonic Oscillation Spectroscopic Survey (eBOSS). The 16th and final eBOSS data release (SDSS DR16) contains all data from eBOSS and its predecessor, the Baryonic Oscillation Spectroscopic Survey (BOSS), providing 210,005 quasars with z q > 2.10 that are used to measure Lyα absorption. We measure the BAO scale both in the autocorrelation of Lyα absorption and in its cross-correlation with 341,468 quasars with redshift z q > 1.77. Apart from the statistical gain from new quasars and deeper observations, the main improvements over previous work come from more accurate modeling of physical and instrumental correlations and the use of new sets of mock data. Combining the BAO measurement from the auto- and cross-correlation yields the constraints of the two ratios ${D}_{H}(z\,=2.33)/{r}_{d}=8.99\pm 0.19$ and ${D}_{M}(z=2.33)/{r}_{d}=37.5\pm 1.1$, where the error bars are statistical. These results are within 1.5σ of the prediction of the flat-ΛCDM cosmology of Planck (2016). The analysis code, picca, the catalog of the flux transmission field measurements, and the Δχ 2 surfaces are publicly available.
وصف الملف: text
العلاقة: https://discovery.ucl.ac.uk/id/eprint/10117472/7/Font%20Ribera_du%C2%A0Mas%C2%A0des%C2%A0Bourboux_2020_ApJ_901_153.pdfTest; https://discovery.ucl.ac.uk/id/eprint/10117472Test/
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6دورية أكاديمية
المؤلفون: Farr, J, Font-Ribera, A, des Bourboux, HDM, Munoz-Gutierrez, A, Javier Sanchez, F, Pontzen, A, Xochitl Gonzalez-Morales, A, Alonso, D, Brooks, D, Doel, P, Etourneau, T, Guy, J, Le Goff, J-M, de la Macorra, A, Palanque-Delabrouille, N, Perez-Rafols, I, Rich, J, Slosar, A, Tarle, G, Duan, Y, Zhang, K
المصدر: Journal of Cosmology and Astroparticle Physics , 2020 (3) , Article 68. (2020)
مصطلحات موضوعية: baryon acoustic oscillations, dark energy experiments, Lyman alpha forest, red-shift surveys
الوصف: The statistical power of Lyman-α forest Baryon Acoustic Oscillation (BAO) measurements is set to increase significantly in the coming years as new instruments such as the Dark Energy Spectroscopic Instrument deliver progressively more constraining data. Generating mock datasets for such measurements will be important for validating analysis pipelines and evaluating the effects of systematics. With such studies in mind, we present LyaCoLoRe: a package for producing synthetic Lyman-α forest survey datasets for BAO analyses. LyaCoLoRe transforms initial Gaussian random field skewers into skewers of transmitted flux fraction via a number of fast approximations. In this work we explain the methods of producing mock datasets used in LyaCoLoRe, and then measure correlation functions on a suite of realisations of such data. We demonstrate that we are able to recover the correct BAO signal, as well as large-scale bias parameters similar to literature values. Finally, we briefly describe methods to add further astrophysical effects to our skewers—high column density systems and metal absorbers—which act as potential complications for BAO analyses.
وصف الملف: text
العلاقة: https://discovery.ucl.ac.uk/id/eprint/10097984/1/1912.02763v1.pdfTest; https://discovery.ucl.ac.uk/id/eprint/10097984Test/
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7دورية أكاديمية
المؤلفون: Blomqvist, M, des Bourboux, HDM, Busca, NG, de Sainte Agathe, V, Rich, J, Balland, C, Bautista, JE, Dawson, K, Font-Ribera, A, Guy, J, Le Goff, J-M, Palanque-Delabrouille, N, Percival, WJ, Perez-Rafols, I, Pieri, MM, Schneider, DP, Slosar, A, Yeche, C
المصدر: Astronomy & Astrophysics , 629 , Article A 86. (2019)
مصطلحات موضوعية: large-scale structure of Universe, dark energy, cosmological parameters, cosmology: observations, quasars: absorption lines
الوصف: We present a measurement of the baryon acoustic oscillation (BAO) scale at redshift z = 2.35 from the three-dimensional correlation of Lyman-α (Lyα) forest absorption and quasars. The study uses 266 590 quasars in the redshift range 1.77 < z < 3.5 from the Sloan Digital Sky Survey (SDSS) Data Release 14 (DR14). The sample includes the first two years of observations by the SDSS-IV extended Baryon Oscillation Spectroscopic Survey (eBOSS), providing new quasars and re-observations of BOSS quasars for improved statistical precision. Statistics are further improved by including Lyα absorption occurring in the Lyβ wavelength band of the spectra. From the measured BAO peak position along and across the line of sight, we determined the Hubble distance DH and the comoving angular diameter distance DM relative to the sound horizon at the drag epoch rd: DH(z = 2.35)/rd = 9.20 ± 0.36 and DM(z = 2.35)/rd = 36.3 ± 1.8. These results are consistent at 1.5σ with the prediction of the best-fit spatially-flat cosmological model with the cosmological constant reported for the Planck (2016) analysis of cosmic microwave background anisotropies. Combined with the Lyα auto-correlation measurement presented in a companion paper, the BAO measurements at z = 2.34 are within 1.7σ of the predictions of this model.
وصف الملف: text
العلاقة: https://discovery.ucl.ac.uk/id/eprint/10082020/1/aa35641-19.pdfTest; https://discovery.ucl.ac.uk/id/eprint/10082020Test/
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8دورية أكاديمية
المؤلفون: de Sainte Agathe, V, Balland, C, des Bourboux, HDM, Busca, NG, Blomqvist, M, Guy, J, Rich, J, Font-Ribera, A, Pieri, MM, Bautista, JE, Dawson, K, Le Goff, J-M, de la Macorra, A, Palanque-Delabrouille, N, Percival, WJ, Perez-Rafols, I, Schneider, DP, Slosar, A, Yeche, C
المصدر: Astronomy & Astrophysics , 629 , Article A 85. (2019)
مصطلحات موضوعية: cosmology: observations, cosmological parameters, dark energy
الوصف: We measure the imprint of primordial baryon acoustic oscillations (BAOs) in the correlation function of Lyα absorption in quasar spectra from the Baryon Oscillation Spectroscopic Survey (BOSS) and the extended BOSS (eBOSS) in Data Release 14 (DR14) of the Sloan Digital Sky Survey (SDSS)-IV. In addition to 179 965 spectra with absorption in the Lyman-α (Lyα) region, we use Lyα absorption in the Lyman-β region of 56 154 spectra for the first time. We measure the Hubble distance, DH, and the comoving angular diameter distance, DM, relative to the sound horizon at the drag epoch rd at an effective redshift z = 2.34. Using a physical model of the correlation function outside the BAO peak, we find DH(2.34)/rd = 8.86 ± 0.29 and DM(2.34)/rd = 37.41 ± 1.86, within 1σ from the flat-ΛCDM model consistent with CMB anisotropy measurements. With the addition of polynomial “broadband” terms, the results remain within one standard deviation of the CMB-inspired model. Combined with the quasar-Lyα cross-correlation measurement presented in a companion paper, the BAO measurements at z = 2.35 are within 1.7σ of the predictions of this model.
وصف الملف: text
العلاقة: https://discovery.ucl.ac.uk/id/eprint/10082019/1/aa35638-19.pdfTest; https://discovery.ucl.ac.uk/id/eprint/10082019Test/
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9دورية أكاديمية
المؤلفون: Abolfathi, B., Aguado, D.S., Aguilar, G., Prieto, C.A., Almeida, A., Ananna, T.T., Anders, F., Anderson, S.F., Andrews, B.H., Anguiano, B., Aragón-Salamanca, A., Argudo-Fernández, M., Armengaud, E., Ata, M., Aubourg, E., Avila-Reese, V., Badenes, C., Bailey, S., Balland, C., Barger, K.A., Barrera-Ballesteros, J., Bartosz, C., Bastien, F., Bates, D., Baumgarten, F., Bautista, J., Beaton, R., Beers, T.C., Belfiore, F., Bender, C.F., Bernardi, M., Bershady, M.A., Beutler, F., Bird, J.C., Bizyaev, D., Blanc, G.A., Blanton, M.R., Blomqvist, M., Bolton, A.S., Boquien, M., Borissova, J., Bovy, J., Bradna Diaz, C.A., Nielsen Brandt, W., Brinkmann, J., Brownstein, J.R., Bundy, K., Burgasser, A.J., Burtin, E., Busca, N.G., Canãs, C.I., Cano-Diáz, M., Cappellari, M., Carrera, R., Casey, A.R., Sodi, B.C., Chen, Y., Cherinka, B., Chiappini, C., Choi, P.D., Chojnowski, D., Chuang, C.-H., Chung, H., Clerc, N., Cohen, R.E., Comerford, J.M., Comparat, J., Do Nascimento, J.C., Da Costa, L., Cousinou, M.-C., Covey, K., Crane, J.D., Cruz-Gonzalez, I., Cunha, K., Ilha, G.D.S., Damke, G.J., Darling, J., Davidson, J.W., Dawson, K., De Icaza Lizaola, M.A.C., MacOrra, A.D.L., De La Torre, S., De Lee, N., Sainte Agathe, V.D., Deconto MacHado, A., Dell'Agli, F., Delubac, T., Diamond-Stanic, A.M., Donor, J., Downes, J.J., Drory, N., Mas Des Bourboux, H.D., Duckworth, C.J., Dwelly, T., Dyer, J., Ebelke, G., Eigenbrot, A.D., Eisenstein, D.J., Elsworth, Y.P., Emsellem, E., Eracleous, M., Erfanianfar, G., Escoffier, S., Fan, X., Alvar, E.F., Fernandez-Trincado, J.G., Cirolini, R.F., Feuillet, D., Finoguenov, A., Fleming, S.W., Font-Ribera, A., Freischlad, G., Frinchaboy, P., Fu, H., Chew, Y.G.M., Galbany, L., Garciá Pérez, A.E., Garcia-Dias, R., Garciá-Hernández, D.A., Garma Oehmichen, L.A., Gaulme, P., Gelfand, J., Gil-Marín, H., Gillespie, B.A., Goddard, D., González Hernández, J.I., Gonzalez-Perez, V., Grabowski, K., Green, P.J., Grier, C.J., Gueguen, A., Guo, H., Guy, J., Hagen, A., Hall, P., Harding, P., Hasselquist, S., Hawley, S., Hayes, C.R., Hearty, F., Hekker, S., Hernandez, J., Hernandez Toledo, H., Hogg, D.W., Holley-Bockelmann, K., Holtzman, J.A., Hou, J., Hsieh, B.-C., Hunt, J.A.S., Hutchinson, T.A., Hwang, H.S., Jimenez Angel, C.E., Johnson, J.A., Jones, A., Jönsson, H., Jullo, E., Sakil Khan, F., Kinemuchi, K., Kirkby, D., Kirkpatrick C.C., IV, Kitaura, F.-S., Knapp, G.R., Kneib, J.-P., Kollmeier, J.A., Lacerna, I., Lane, R.R., Lang, D., Law, D.R., Le Goff, J.-M., Lee, Y.-B., Li, H., Li, C., Lian, J., Liang, Y., Lima, M., Lin, L., Long, D., Lucatello, S., Lundgren, B., MacKereth, J.T., MacLeod, C.L., Mahadevan, S., Geimba Maia, M.A., Majewski, S., Manchado, A., Maraston, C., Mariappan, V., Marques-Chaves, R., Masseron, T., Masters, K.L., McDermid, R.M., McGreer, I.D., Melendez, M., Meneses-Goytia, S., Merloni, A., Merrifield, M.R., Meszaros, S., Meza, A., Minchev, I., Minniti, D., Mueller, E.-M., Muller-Sanchez, F., Muna, D., Munõz, R.R., Myers, A.D., Nair, P., Nandra, K., Ness, M., Newman, J.A., Nichol, R.C., Nidever, D.L., Nitschelm, C., Noterdaeme, P., O'Connell, J., Oelkers, R.J., Oravetz, A., Oravetz, D., Ortíz, E.A., Osorio, Y., Pace, Z., Padilla, N., Palanque-Delabrouille, N., Palicio, P.A., Pan, H.-A., Pan, K., Parikh, T., Pâris, I., Park, C., Peirani, S., Pellejero-Ibanez, M., Penny, S., Percival, W.J., Perez-Fournon, I., Petitjean, P., Pieri, M.M., Pinsonneault, M., Pisani, A., Prada, F., Prakash, A., De Andrade Queiroz, A.B., Raddick, M.J., Raichoor, A., Rembold, S.B., Richstein, H., Riffel, R.A., Riffel, R., Rix, H.-W., Robin, A.C., Torres, S.R., Román-Zúñiga, C., Ross, A.J., Rossi, G., Ruan, J., Ruggeri, R., Ruiz, J., Salvato, M., Sánchez, A.G., Sánchez, S.F., Almeida, J.S., Sánchez-Gallego, J.R., Rojas, F.A.S., Santiago, B.X., Schiavon, R.P., Schimoia, J.S., Schlafly, E., Schlegel, D., Schneider, D.P., Schuster, W.J., Schwope, A., Seo, H.-J., Serenelli, A., Shen, S., Shen, Y., Shetrone, M., Shull, M., Aguirre, V.S., Simon, J.D., Skrutskie, M., Slosar, A., Smethurst, R., Smith, V., Sobeck, J., Somers, G., Souter, B.J., Souto, D., Spindler, A., Stark, D.V., Stassun, K., Steinmetz, M., Stello, D., Storchi-Bergmann, T., Streblyanska, A., Stringfellow, G.S., Suárez, G., Sun, J., Szigeti, L., Taghizadeh-Popp, M., Talbot, M.S., Tang, B., Tao, C., Tayar, J., Tembe, M., Teske, J., Thakar, A.R., Thomas, D., Tissera, P., Tojeiro, R., Tremonti, C., Troup, N.W., Urry, M., Valenzuela, O., Bosch, R.V.D., Vargas-González, J., Vargas-Maganã, M., Vazquez, J.A., Villanova, S., Vogt, N., Wake, D., Wang, Y., Weaver, B.A., Weijmans, A.-M., Weinberg, D.H., Westfall, K.B., Whelan, D.G., Wilcots, E., Wild, V., Williams, R.A., Wilson, J., Wood-Vasey, W.M., Wylezalek, D., Xiao, T., Yan, R., Yang, M., Ybarra, J.E., Yèche, C., Zakamska, N., Zamora, O., Zarrouk, P., Zasowski, G., Zhang, K., Zhao, C., Zhao, G.-B., Zheng, Z., Zhou, Z.-M., Zhu, G., Zinn, J.C., Zou, H.
المصدر: Abolfathi , B , Aguado , D S , Aguilar , G , Prieto , C A , Almeida , A , Ananna , T T , Anders , F , Anderson , S F , Andrews , B H , Anguiano , B , Aragón-Salamanca , A , Argudo-Fernández , M , Armengaud , E , Ata , M , Aubourg , E , Avila-Reese , V , Badenes , C , Bailey , S , Balland , C , Barger , K A , Barrera-Ballesteros , J , Bartosz , C , Bastien , F , Bates ....
الوصف: The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.
وصف الملف: application/pdf
العلاقة: https://research-portal.st-andrews.ac.uk/en/researchoutput/the-fourteenth-data-release-of-the-sloan-digital-sky-surveyTest(8d2f3da1-821f-48a7-8e44-a448ec91299d).html
الإتاحة: https://doi.org/10.3847/1538-4365/aa9e8aTest
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-fourteenth-data-release-of-the-sloan-digital-sky-surveyTest(8d2f3da1-821f-48a7-8e44-a448ec91299d).html
https://research-repository.st-andrews.ac.uk/bitstream/10023/12422/5/Abolfathi_2018_AJ_Fourteenth_CC.pdfTest
http://adsabs.harvard.edu/abs/2017arXiv170709322ATest
https://arxiv.org/abs/1707.09322Test -
10دورية أكاديمية
المؤلفون: Abolfathi, B, Aguado, DS, Aguilar, G, Prieto, CA, Almeida, A, Ananna, TT, Anders, F, Anderson, SF, Andrews, BH, Anguiano, B, Aragon-Salamanca, A, Argudo-Fernandez, M, Armengaud, E, Ata, M, Aubourg, E, Avila-Reese, V, Badenes, C, Bailey, S, Balland, C, Barger, KA, Barrera-Ballesteros, J, Bartosz, C, Bastien, F, Bates, D, Baumgarten, F, Bautista, J, Beaton, R, Beers, TC, Belfiore, F, Bender, CF, Bernardi, M, Bershady, MA, Beutler, F, Bird, JC, Bizyaev, D, Blanc, GA, Blanton, MR, Blomqvist, M, Bolton, AS, Boquien, M, Borissova, J, Bovy, J, Diaz, CAB, Brandt, WN, Brinkmann, J, Brownstein, JR, Bundy, K, Burgasser, AJ, Burtin, E, Busca, NG, Canas, CI, Cano-Diaz, M, Cappellari, M, Carrera, R, Casey, AR, Sodi, BC, Chen, Y, Cherinka, B, Chiappini, C, Choi, PD, Chojnowski, D, Chuang, C-H, Chung, H, Clerc, N, Cohen, RE, Comerford, JM, Comparat, J, do Nascimento, JC, da Costa, L, Cousinou, M-C, Covey, K, Crane, JD, Cruz-Gonzalez, I, Cunha, K, Ilha, GDS, Damke, GJ, Darling, J, Davidson, JW, Dawson, K, de Icaza Lizaola, MAC, de la Macorra, A, de la Torre, S, de Lee, N, de Sainte Agathe, V, Machado, AD, Dell'Agli, F, Delubac, T, Diamond-Stanic, AM, Donor, J, Downes, JJ, Drory, N, Bourboux, HDMD, Duckworth, CJ, Dwelly, T, Dyer, J, Ebelke, G, Eigenbrot, AD, Eisenstein, DJ, Elsworth, YP, Emsellem, E, Eracleous, M, Erfanianfar, G, Escoffier, S, Fan, X, Alvar, EF, Fernandez-Trincado, JG, Cirolini, RF, Feuillet, D, Finoguenov, A, Fleming, SW, Font-Ribera, A, Freischlad, G, Frinchaboy, P, Fu, H, Maqueo Chew, YG, Galbany, L, Perez, AEG, Garcia-Dias, R, Garcia-Hernandez, DA, Garma Oehmichen, LA, Gaulme, P, Gelfand, J, Gil-Marin, H, Gillespie, BA, Goddard, D, Gonzalez Hernandez, JI, Gonzalez-Perez, V, Grabowski, K, Green, PJ, Grier, CJ, Gueguen, A, Guo, H, Guy, J, Hagen, A, Hall, P, Harding, P, Hasselquist, S, Hawley, S, Hayes, CR, Hearty, F, Hekker, S, Hernandez, J, Toledo, HH, Hogg, DW, Holley-Bockelmann, K, Holtzman, JA, Hou, J, Hsieh, B-C, Hunt, JAS, Hutchinson, TA, Hwang, HS, Jimenez Angel, CE, Johnson, JA, Jones, A, Jonsson, H, Jullo, E, Khan, FS, Kinemuchi, K, Kirkby, D, Kirkpatrick, CC, Kitaura, F-S, Knapp, GR, Kneib, J-P, Kollmeier, JA, Lacerna, I, Lane, RR, Lang, D, Law, DR, Le Goff, J-M, Lee, Y-B, Li, H, Li, C, Lian, J, Liang, Y, Lima, M, Lin, L, Long, D, Lucatello, S, Lundgren, B, Mackereth, JT, MacLeod, CL, Mahadevan, S, Maia, MAG, Majewski, S, Maraston, C, Mariappan, V, Marques-Chaves, R, Masseron, T, Masters, KL, McDermid, RM, McGreer, ID, Melendez, M, Meneses-Goytia, S, Merloni, A, Merrifield, MR, Meszaros, S, Meza, A, Minchev, I, Minniti, D, Mueller, E-M, Muller-Sanchez, F, Muna, D, Munoz, RR, Myers, AD, Nair, P, Nandra, K, Ness, M, Newman, JA, Nichol, RC, Nidever, DL, Nitschelm, C, Noterdaeme, P, O'Connell, J, Oelkers, RJ, Oravetz, A, Oravetz, D, Ortiz, EA, Osorio, Y, Pace, Z, Padilla, N, Palanque-Delabrouille, N, Palicio, PA, Pan, H-A, Pan, K, Parikh, T, Paris, I, Park, C, Peirani, S, Pellejero-Ibanez, M, Penny, S, Percival, WJ, Perez-Fournon, I, Petitjean, P, Pieri, MM, Pinsonneault, M, Pisani, A, Prada, F, Prakash, A, de Andrade Queiroz, AB, Raddick, MJ, Raichoor, A, Rembold, SB, Richstein, H, Riffel, RA, Rix, H-W, Robin, AC, Torres, SR, Roman-Zuniga, C, Ross, AJ, Rossi, G, Ruan, J, Ruggeri, R, Ruiz, J, Salvato, M, Sanchez, AG, Sanchez, SF, Almeida, JS, Sanchez-Gallego, JR, Santana Rojas, FA, Santiago, BX, Schiavon, RP, Schimoia, JS, Schlafly, E, Schlegel, D, Schneider, DP, Schuster, WJ, Schwope, A, Seo, H-J, Serenelli, A, Shen, S, Shen, Y, Shetrone, M, Shull, M, Aguirre, VS, Simon, JD, Skrutskie, M, Slosar, A, Smethurst, R, Smith, V, Sobeck, J, Somers, G, Souter, BJ, Souto, D, Spindler, A, Stark, DV, Stassun, K, Steinmetz, M, Stello, D, Storchi-Bergmann, T, Streblyanska, A, Stringfellow, GS, Suarez, G, Sun, J, Szigeti, L, Taghizadeh-Popp, M, Talbot, MS, Tang, B, Tao, C, Tayar, J, Tembe, M, Teske, J, Thakar, AR, Thomas, D, Tissera, P, Tojeiro, R, Tremonti, C, Troup, NW, Urry, M, Valenzuela, O, Van den Bosch, R, Vargas-Gonzalez, J, Vargas-Magana, M, Vazquez, JA, Villanova, S, Vogt, N, Wake, D, Wang, Y, Weaver, BA, Weijmans, A-M, Weinberg, DH, Westfall, KB, Whelan, DG, Wilcots, E, Wild, V, Williams, RA, Wilson, J, Wood-Vasey, WM, Wylezalek, D, Xiao, T, Yan, R, Yang, M, Ybarra, JE, Yeche, C, Zakamska, N, Zamora, O, Zarrouk, P, Zasowski, G, Zhang, K, Zhao, C, Zhao, G-B, Zheng, Z, Zhou, Z-M, Zhu, G, Zinn, JC, Zou, H
المصدر: The Astrophysical Journal Supplement Series , 235 (2) , Article 42. (2018)
مصطلحات موضوعية: Science & Technology, Physical Sciences, Astronomy & Astrophysics, atlases, catalogs, surveys, SDSS-IV MANGA, X-RAY SURVEYS, TARGET SELECTION, E-SCIENCE, GALAXIES, MASS, TELESCOPE, METALLICITY, HISTORIES
الوصف: The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014–2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.
وصف الملف: text
العلاقة: https://discovery.ucl.ac.uk/id/eprint/1570009/1/Font%20Ribera_Abolfathi_2018_ApJS_235_42.pdfTest; https://discovery.ucl.ac.uk/id/eprint/1570009Test/
