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The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation

Research output: Contribution to conference - Without ISBN/ISSN › Abstract › peer-review

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The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation. / Kim, Young-Lo; Smith, Mathew; Sullivan, Mark et al.
2018. Abstract from American Astronomical Society Meeting #231, Washington DC, Maryland, United States.

Research output: Contribution to conference - Without ISBN/ISSN › Abstract › peer-review

Harvard

Kim, Y-L, Smith, M, Sullivan, M & Lee, Y-W 2018, 'The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation', American Astronomical Society Meeting #231, Washington DC, United States, 8/01/18 - 12/01/18.

APA

Kim, Y-L., Smith, M., Sullivan, M., & Lee, Y-W. (2018). The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation. Abstract from American Astronomical Society Meeting #231, Washington DC, Maryland, United States.

Vancouver

Kim Y-L, Smith M, Sullivan M, Lee Y-W. The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation. 2018. Abstract from American Astronomical Society Meeting #231, Washington DC, Maryland, United States.

Author

Kim, Young-Lo ; Smith, Mathew ; Sullivan, Mark et al. / The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation. Abstract from American Astronomical Society Meeting #231, Washington DC, Maryland, United States.

Bibtex

@conference{6263fbda214245849c7c437611af3284,
title = "The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation",
abstract = "Recent studies suggest that the difference between local and global properties of galaxies might play an important role in the Type Ia supernova (SN Ia) host galaxy studies. Obtaining local spectroscopic measurements for hosts at high redshift, however, is difficult. Here we will introduce a more efficient way to infer the local properties from global galaxy measurements. We find that when the globally star-forming galaxies are restricted to a low-mass subset (≤ 10^10 M☉), a sample without the local-global difference in star formation is efficiently selected. From this sample, we confirm that SNe Ia in locally star-forming environments are 0.080 ± 0.018 mag fainter (4.4 σ) than those in locally passive environments. Our results are, however, statistically more significant than previous results, because of ~5 times larger sample across a wider redshift range. Considering the significant difference in the mean stellar population age between these environments, the result would imply a possible luminosity evolution of SNe Ia.",
author = "Young-Lo Kim and Mathew Smith and Mark Sullivan and Young-Wook Lee",
note = "American Astronomical Society, AAS Meeting #231, id. 209.07; American Astronomical Society Meeting #231, AAS ; Conference date: 08-01-2018 Through 12-01-2018",
year = "2018",
month = jan,
language = "English",

}

RIS

TY - CONF

T1 - The Dependence of Type Ia Supernova Luminosity on Host Galaxy Properties from a Sample without the Local-Global Difference in Star Formation

AU - Kim, Young-Lo

AU - Smith, Mathew

AU - Sullivan, Mark

AU - Lee, Young-Wook

N1 - Conference code: 231

PY - 2018/1

Y1 - 2018/1

N2 - Recent studies suggest that the difference between local and global properties of galaxies might play an important role in the Type Ia supernova (SN Ia) host galaxy studies. Obtaining local spectroscopic measurements for hosts at high redshift, however, is difficult. Here we will introduce a more efficient way to infer the local properties from global galaxy measurements. We find that when the globally star-forming galaxies are restricted to a low-mass subset (≤ 10^10 M☉), a sample without the local-global difference in star formation is efficiently selected. From this sample, we confirm that SNe Ia in locally star-forming environments are 0.080 ± 0.018 mag fainter (4.4 σ) than those in locally passive environments. Our results are, however, statistically more significant than previous results, because of ~5 times larger sample across a wider redshift range. Considering the significant difference in the mean stellar population age between these environments, the result would imply a possible luminosity evolution of SNe Ia.

AB - Recent studies suggest that the difference between local and global properties of galaxies might play an important role in the Type Ia supernova (SN Ia) host galaxy studies. Obtaining local spectroscopic measurements for hosts at high redshift, however, is difficult. Here we will introduce a more efficient way to infer the local properties from global galaxy measurements. We find that when the globally star-forming galaxies are restricted to a low-mass subset (≤ 10^10 M☉), a sample without the local-global difference in star formation is efficiently selected. From this sample, we confirm that SNe Ia in locally star-forming environments are 0.080 ± 0.018 mag fainter (4.4 σ) than those in locally passive environments. Our results are, however, statistically more significant than previous results, because of ~5 times larger sample across a wider redshift range. Considering the significant difference in the mean stellar population age between these environments, the result would imply a possible luminosity evolution of SNe Ia.

M3 - Abstract

T2 - American Astronomical Society Meeting #231

Y2 - 8 January 2018 through 12 January 2018

ER -