CORRELATIONS BETWEEN SDSS TYPE Ia SUPERNOVA RATES AND HOST GALAXY PROPERTIES
Abstract
Studying the correlation of Type Ia supernova rates (SNRs) with host galaxy properties is an important step in understanding the exact nature of Type Ia supernovae (SNe Ia). We use SNe Ia from the SDSS-II sample, spectroscopically determined masses and star formation rates, and a new maximum likelihood method, to fit the Scannapieco and Bildsten rate model SNR = A Multiplication-Sign M + B Multiplication-Sign SFR, where M is galaxy mass and SFR is star formation rate. We find A = 3.5{sup +0.9}{sub -0.7} Multiplication-Sign 10{sup -14} (SNe/yr)(M{sub Sun }){sup -1} and B = 1.3{sup +0.4}{sub -0.3} Multiplication-Sign 10{sup -3} (SNe/yr)(M{sub Sun} yr{sup -1}){sup -1}, assuming overall efficiency of 0.5. This is in reasonable agreement with other determinations. However we find strong evidence that this model is a poor fit to other projections of the data: it fails to correctly predict the distribution of supernovae with host mass or SFR. An additional model parameter is required; most likely this parameter is related to host galaxy mass. Some implications of this result are discussed.
- Authors:
-
- Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, STN CSC, Victoria, BC, V8W 3P6 (Canada)
- Publication Date:
- OSTI Identifier:
- 22130858
- Resource Type:
- Journal Article
- Journal Name:
- Astronomical Journal (New York, N.Y. Online)
- Additional Journal Information:
- Journal Volume: 145; Journal Issue: 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CORRELATIONS; DISTRIBUTION; EFFICIENCY; GALAXIES; HOST; MASS; MAXIMUM-LIKELIHOOD FIT; SIMULATION; SUPERNOVAE
Citation Formats
Yan, Gao, and Pritchet, Chris. CORRELATIONS BETWEEN SDSS TYPE Ia SUPERNOVA RATES AND HOST GALAXY PROPERTIES. United States: N. p., 2013.
Web. doi:10.1088/0004-6256/145/3/83.
Yan, Gao, & Pritchet, Chris. CORRELATIONS BETWEEN SDSS TYPE Ia SUPERNOVA RATES AND HOST GALAXY PROPERTIES. United States. https://doi.org/10.1088/0004-6256/145/3/83
Yan, Gao, and Pritchet, Chris. 2013.
"CORRELATIONS BETWEEN SDSS TYPE Ia SUPERNOVA RATES AND HOST GALAXY PROPERTIES". United States. https://doi.org/10.1088/0004-6256/145/3/83.
@article{osti_22130858,
title = {CORRELATIONS BETWEEN SDSS TYPE Ia SUPERNOVA RATES AND HOST GALAXY PROPERTIES},
author = {Yan, Gao and Pritchet, Chris},
abstractNote = {Studying the correlation of Type Ia supernova rates (SNRs) with host galaxy properties is an important step in understanding the exact nature of Type Ia supernovae (SNe Ia). We use SNe Ia from the SDSS-II sample, spectroscopically determined masses and star formation rates, and a new maximum likelihood method, to fit the Scannapieco and Bildsten rate model SNR = A Multiplication-Sign M + B Multiplication-Sign SFR, where M is galaxy mass and SFR is star formation rate. We find A = 3.5{sup +0.9}{sub -0.7} Multiplication-Sign 10{sup -14} (SNe/yr)(M{sub Sun }){sup -1} and B = 1.3{sup +0.4}{sub -0.3} Multiplication-Sign 10{sup -3} (SNe/yr)(M{sub Sun} yr{sup -1}){sup -1}, assuming overall efficiency of 0.5. This is in reasonable agreement with other determinations. However we find strong evidence that this model is a poor fit to other projections of the data: it fails to correctly predict the distribution of supernovae with host mass or SFR. An additional model parameter is required; most likely this parameter is related to host galaxy mass. Some implications of this result are discussed.},
doi = {10.1088/0004-6256/145/3/83},
url = {https://www.osti.gov/biblio/22130858},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 3,
volume = 145,
place = {United States},
year = {Fri Mar 15 00:00:00 EDT 2013},
month = {Fri Mar 15 00:00:00 EDT 2013}
}