SUGAR: An improved empirical model of Type Ia Supernovae based on spectral features
| العنوان: | SUGAR: An improved empirical model of Type Ia Supernovae based on spectral features |
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| المؤلفون: | P.-F. Léget, E. Gangler, F. Mondon, G. Aldering, P. Antilogus, C. Aragon, S. Bailey, C. Baltay, K. Barbary, S. Bongard, K. Boone, C. Buton, N. Chotard, Y. Copin, S. Dixon, P. Fagrelius, U. Feindt, D. Fouchez, B. Hayden, W. Hillebrandt, A. Kim, M. Kowalski, D. Kuesters, S. Lombardo, Q. Lin, J. Nordin, R. Pain, E. Pecontal, R. Pereira, S. Perlmutter, K. A. Ponder, M. V. Pruzhinskaya, D. Rabinowitz, M. Rigault, K. Runge, D. Rubin, C. Saunders, L.-P. Says, G. Smadja, C. Sofiatti, N. Suzuki, S. Taubenberger, C. Tao, R. C. Thomas |
| المساهمون: | Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Nearby Supernova factory, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) |
| المصدر: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2020, 636, pp.A46. ⟨10.1051/0004-6361/201834954⟩ Astronomy and astrophysics 636, A46-(2020). doi:10.1051/0004-6361/201834954 Astron.Astrophys. Astron.Astrophys., 2020, 636, pp.A46. ⟨10.1051/0004-6361/201834954⟩ Astronomy & Astrophysics |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, 01 natural sciences, Spectral line, Metric expansion of space, symbols.namesake, Acceleration, supernovae: general, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Ejecta, 010303 astronomy & astrophysics, Gaussian process, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, observations [cosmology], Supernova, Space and Planetary Science, cosmology: observations, astro-ph.CO, symbols, ddc:520, Spectral energy distribution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], general [supernovae], Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, Interpolation |
| الوصف: | Type Ia Supernovae (SNe Ia) are widely used to measure the expansion of the Universe. Improving distance measurements of SNe Ia is one technique to better constrain the acceleration of expansion and determine its physical nature. This document develops a new SNe Ia spectral energy distribution (SED) model, called the SUpernova Generator And Reconstructor (SUGAR), which improves the spectral description of SNe Ia, and consequently could improve the distance measurements. This model is constructed from SNe Ia spectral properties and spectrophotometric data from The Nearby Supernova Factory collaboration. In a first step, a PCA-like method is used on spectral features measured at maximum light, which allows us to extract the intrinsic properties of SNe Ia. Next, the intrinsic properties are used to extract the average extinction curve. Third, an interpolation using Gaussian Processes facilitates using data taken at different epochs during the lifetime of a SN Ia and then projecting the data on a fixed time grid. Finally, the three steps are combined to build the SED model as a function of time and wavelength. This is the SUGAR model. The main advancement in SUGAR is the addition of two additional parameters to characterize SNe Ia variability. The first is tied to the properties of SNe Ia ejecta velocity, the second is correlated with their calcium lines. The addition of these parameters, as well as the high quality the Nearby Supernova Factory data, makes SUGAR an accurate and efficient model for describing the spectra of normal SNe Ia as they brighten and fade. The performance of this model makes it an excellent SED model for experiments like ZTF, LSST or WFIRST. 25 pages, 27 figures |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-6361 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12f6fc1508e769bea3578dfc64343698Test https://hal.science/hal-02371622Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....12f6fc1508e769bea3578dfc64343698 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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