SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY
The rate evolution of subluminous Type Ia supernovae (SNe Ia) is presented using data from the Supernova Legacy Survey. This sub-sample represents the faint and rapidly declining light curves of the observed SN Ia population here defined by low-stretch values (s ≤ 0.8). Up to redshift z = 0.6, we fi...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Institute of Physics Publishing
2011
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| _version_ | 1797093410970009600 |
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| author | Gonzalez-Gaitan, S Perrett, K Sullivan, M Conley, A Howell, D Carlberg, R Astier, P Balam, D Balland, C Basa, S Fouchez, D Guy, J Hardin, D Hook, I Pain, R Pritchet, C Regnault, N Rich, J Lidman, C |
| author_facet | Gonzalez-Gaitan, S Perrett, K Sullivan, M Conley, A Howell, D Carlberg, R Astier, P Balam, D Balland, C Basa, S Fouchez, D Guy, J Hardin, D Hook, I Pain, R Pritchet, C Regnault, N Rich, J Lidman, C |
| author_sort | Gonzalez-Gaitan, S |
| collection | OXFORD |
| description | The rate evolution of subluminous Type Ia supernovae (SNe Ia) is presented using data from the Supernova Legacy Survey. This sub-sample represents the faint and rapidly declining light curves of the observed SN Ia population here defined by low-stretch values (s ≤ 0.8). Up to redshift z = 0.6, we find 18 photometrically identified subluminous SNe Ia, of which six have spectroscopic redshift (and three are spectroscopically confirmed SNe Ia). The evolution of the subluminous volumetric rate is constant or slightly decreasing with redshift, in contrast to the increasing SN Ia rate found for the normal stretch population, although a rising behavior is not conclusively ruled out. The subluminous sample is mainly found in early-type galaxies with little or no star formation, so that the rate evolution is consistent with a galactic mass-dependent behavior: r(z) = A × Mg, with A = (1.1 ± 0.3) × 10-14 SNeyr-1M⊙-1. © 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| first_indexed | 2024-03-07T03:59:58Z |
| format | Journal article |
| id | oxford-uuid:c43545a4-6cee-4eaf-8064-c638c88a81ca |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:59:58Z |
| publishDate | 2011 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:c43545a4-6cee-4eaf-8064-c638c88a81ca2022-03-27T06:21:56ZSUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEYJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c43545a4-6cee-4eaf-8064-c638c88a81caEnglishSymplectic Elements at OxfordInstitute of Physics Publishing2011Gonzalez-Gaitan, SPerrett, KSullivan, MConley, AHowell, DCarlberg, RAstier, PBalam, DBalland, CBasa, SFouchez, DGuy, JHardin, DHook, IPain, RPritchet, CRegnault, NRich, JLidman, CThe rate evolution of subluminous Type Ia supernovae (SNe Ia) is presented using data from the Supernova Legacy Survey. This sub-sample represents the faint and rapidly declining light curves of the observed SN Ia population here defined by low-stretch values (s ≤ 0.8). Up to redshift z = 0.6, we find 18 photometrically identified subluminous SNe Ia, of which six have spectroscopic redshift (and three are spectroscopically confirmed SNe Ia). The evolution of the subluminous volumetric rate is constant or slightly decreasing with redshift, in contrast to the increasing SN Ia rate found for the normal stretch population, although a rising behavior is not conclusively ruled out. The subluminous sample is mainly found in early-type galaxies with little or no star formation, so that the rate evolution is consistent with a galactic mass-dependent behavior: r(z) = A × Mg, with A = (1.1 ± 0.3) × 10-14 SNeyr-1M⊙-1. © 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| spellingShingle | Gonzalez-Gaitan, S Perrett, K Sullivan, M Conley, A Howell, D Carlberg, R Astier, P Balam, D Balland, C Basa, S Fouchez, D Guy, J Hardin, D Hook, I Pain, R Pritchet, C Regnault, N Rich, J Lidman, C SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title | SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title_full | SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title_fullStr | SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title_full_unstemmed | SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title_short | SUBLUMINOUS TYPE Ia SUPERNOVAE AT HIGH REDSHIFT FROM THE SUPERNOVA LEGACY SURVEY |
| title_sort | subluminous type ia supernovae at high redshift from the supernova legacy survey |
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