The EDGE-CALIFA Survey: Exploring the Star Formation Law through Variable Selection
| العنوان: | The EDGE-CALIFA Survey: Exploring the Star Formation Law through Variable Selection |
|---|---|
| المؤلفون: | Yixian Cao, Stuart N. Vogel, Dario Colombo, Rubén García-Benito, Sebastián F. Sánchez, Jason L. Loeppky, Tony Wong, Biprateep Dey, Leo Blitz, V. Kalinova, Alberto D. Bolatto, Dyas Utomo, Erik Rosolowsky |
| المساهمون: | Natural Sciences and Engineering Research Council of Canada, National Science Foundation (US), Consejo Nacional de Ciencia y Tecnología (México), Universidad Nacional Autónoma de México, Ministerio de Economía y Competitividad (España), European Commission, Gordon and Betty Moore Foundation, The Kenneth T. and Eileen L. Norris Foundation |
| المصدر: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Physics, Galaxies: star formation, 010308 nuclear & particles physics, Stars: formation, Library science, Galaxies: evolution, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, evolution [Galaxies], 01 natural sciences, star formation [Galaxies], Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Christian ministry, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, formation [Stars], Astrophysics::Galaxy Astrophysics |
| الوصف: | We present a multilinear analysis to determine the significant predictors of star formation in galaxies using the combined EDGE-CALIFA sample of galaxies. We analyse 1845 kpc-scale lines of sight across 39 galaxies with molecular line emission measurements from EDGE combined with optical IFU data drawn from CALIFA. We use the Least Absolute Shrinkage and Selection Operator (LASSO) to identify significant factors in predicting star formation rates. We find that the local star formation rate surface density is increased by higher molecular gas surface densities and stellar surface densities. In contrast, we see lower star formation rates in systems with older stellar populations, higher gas- and stellar-phase metallicities and larger galaxy masses. We also find a significant increase in star formation rate with galactocentric radius normalized by the disc scale length, which suggests additional parameters regulating star formation rate not explored in this study. © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. BD is supported by a MITACS Globalink fellowship. ER is supported by Discovery Grant from NSERC of Canada (RGPIN-2017-03987). DU is supported by the National Science Foundation under grants No. 1615105, 1615109, and 1653300. SFS thanks the support of the CONACYT grant CB-285080 and funding from the PAPIIT-DGAPA-IA101217 (UNAM) project. In addition to the software cited in the text, we gratefully acknowledge the use of MATPLOTLIB (Hunter 2007), PANDAS (McKinney 2010), and ASTROPY (Astropy Collaboration 2013, 2018). RGB acknowledges financial support from the Spanish Ministry of Economy and Competitiveness through grant AYA2016-77846-P. We gratefully acknowledge conversations with Eric Koch and John Braun who suggested the LASSO approach to this data set. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Eileen and Kenneth Norris Foundation, the Caltech Associates, the states of California, Illinois, and Maryland, and the NSF. Funding for CARMA development and operations were supported by NSF and the CARMA partner universities. |
| اللغة: | English |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab1d1d1c7c172a6e3a2a863d5ea48a63Test http://arxiv.org/abs/1906.02273Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ab1d1d1c7c172a6e3a2a863d5ea48a63 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |