التفاصيل البيبلوغرافية
| العنوان: |
Quantitative spectroscopy of distant type Ia supernovae |
| المؤلفون: |
K. Perrett, Pierre Astier, Alex Conley, D. A. Howell, C. J. Pritchet, James D. Neill, S. Basa, T. J. Bronder, Julien Guy, I. M. Hook, R. G. Carlberg, R. Pain, Mark Sullivan |
| سنة النشر: |
2016 |
| مصطلحات موضوعية: |
Physics, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Spectral line, Astronomical spectroscopy, Redshift, Luminosity, Supernova, Astrophysics::Solar and Stellar Astrophysics, Supernova Legacy Survey, Equivalent width, Astrophysics::Galaxy Astrophysics |
| الوصف: |
Quantitative analysis of 24 high-z (zmed = 0.81) Type Ia supernovae (SNe Ia) spectra observed at the Gemini Telescopes for the Supernova Legacy Survey (SNLS) is presented. This analysis includes equivalent width measurements of SNe Ia-specific absorption features with methods tailored to the reduced signal-to-noise and host galaxy contamination present in these distant spectra. The results from this analysis are compared to corresponding measurements of a large set of low-z SNe Ia from the literature. This comparison showed no significant difference (less than 2σ) between the spectroscopic features of the distant and nearby SNe; a result that supports the assumption that SNe Ia are not evolving with redshift. Additionally, a new correlation between SiII absorption (observed near peak luminosity) and SNe Ia peak magnitudes is presented. © 2007 American Institute of Physics. |
| اللغة: |
English |
| URL الوصول: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d044fea383fe1647a40f3159c038d68c
https://ora.ox.ac.uk/objects/uuid:2a7bf88e-0a3e-45d1-b161-0184cf59ad4d |
| حقوق: |
OPEN |
| رقم الأكسشن: |
edsair.doi.dedup.....d044fea383fe1647a40f3159c038d68c |
| قاعدة البيانات: |
OpenAIRE |
