See Change:VLT spectroscopy of a sample of high-redshift Type Ia supernova host galaxies
| Autor: | David Rubin, Jakob Nordin, Greg Aldering, Isobel Hook, Saul Perlmutter, Kyle Boone, C. Saunders, Steven Williams, Brian Hayden, C. Lidman, Ariel Goobar, P. Ruiz-Lapuente |
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| Přispěvatelé: | Science and Technology Facilities Council (UK), European Southern Observatory, National Aeronautics and Space Administration (US), European Space Agency, Hubble Space Telescope, Space Telescope Science Institute (US), California Institute of Technology, California State University, W. M. Keck Foundation, 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 Lagrange de Paris, Sorbonne Université (SU), Supernova Cosmology Project |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Stellar mass SPT-CL J2106–5844) FOS: Physical sciences Techniques: spectroscopic Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics clusters: general [Galaxies] clusters: individual (MOO J1014+0038 SPT-CL J0205–5829 SPT-CL J2040–4451 SPT-CL J2106–5844) [Galaxies] 01 natural sciences 7. Clean energy spectroscopic [Techniques] galaxies: clusters: individual (MOO J1014+0038 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Galaxy cluster Astrophysics::Galaxy Astrophysics Physics SPT-CL J2040–4451 Very Large Telescope 010308 nuclear & particles physics Star formation supernovae [Transients] Astrophysics::Instrumentation and Methods for Astrophysics SPT-CL J0205–5829 Transients: supernovae Astronomy and Astrophysics Light curve Astrophysics - Astrophysics of Galaxies Galaxy Redshift Supernova Galaxies: clusters: individual (MOO J1014+0038 SPT-CL J0205–5829 SPT-CL J2040–4451 SPT-CL J2106–5844) Galaxies: distances and redshifts 13. Climate action Space and Planetary Science distances and redshifts. [Galaxies] Astrophysics of Galaxies (astro-ph.GA) Galaxies: clusters: general Astrophysics::Earth and Planetary Astrophysics galaxies: distances and redshifts [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 495 (4), pp.3859-3880. ⟨10.1093/mnras/staa1319⟩ Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | 22 pags., 12 figs., 8 tabs., 2 apps. The Supernova Cosmology Project has conducted the 'See Change' programme, aimed at discovering and observing high-redshift (1.13 ¿ z ¿ 1.75) Type Ia supernovae (SNe Ia). We used multifilter Hubble Space Telescope (HST) observations of massive galaxy clusters with sufficient cadence to make the observed SN Ia light curves suitable for a cosmological probe of dark energy at z > 0.5. This See Change sample of SNe Ia with multi-colour light curves will be the largest to date at these redshifts. As part of the See Change programme, we obtained ground-based spectroscopy of each discovered transient and/or its host galaxy. Here, we present Very Large Telescope (VLT) spectra of See Change transient host galaxies, deriving their redshifts, and host parameters such as stellar mass and star formation rate. Of the 39 See Change transients/hosts that were observed with the VLT, we successfully determined the redshift for 26, including 15 SNe Ia at z > 0.97. We show that even in passive environments, it is possible to recover secure redshifts for the majority of SN hosts out to z = 1.5. We find that with typical exposure times of 3-4 h on an 8-m-class telescope we can recover ~75 per cent of SN Ia redshifts in the range of 0.97 < z < 1.5. Furthermore, we show that the combination of HST photometry and VLT spectroscopy is able to provide estimates of host galaxy stellar mass that are sufficiently accurate for use in a mass-step correction in the cosmological analysis. SCW and IMH acknowledge support from STFC consolidated grants ST/P00038X/1 and ST/R000514/1. This work is based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes 294.A-5025(A), 095.A-0830(A, B, C), 096.A-0926(B, C), 097.A-0442(A, B, C), and 0100.A-0851(A). This work is also based on observations made with the NASA/ESA HST, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with programs GO-13677 and GO-14327, along with GO-13747. This paper makes use of data obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. |
| Databáze: | OpenAIRE |
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