The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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The Dependence of Type Ia Supernova Luminosities on the Global and Local Properties of Host Galaxies in the YONSEI Supernova Catalog

  • Kim, Young-Lo (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University) ;
  • Kang, Yijung (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University) ;
  • Lee, Young-Wook (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University)
  • Published : 2018.05.08
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Abstract

Trends of Type Ia supernova (SN Ia) luminosities with the properties of host galaxies are important to study the underlying physics for an SN progenitor system and explosion mechanism. In the YONSEI SN catalog, we have a sample of ~600 SN and host data in the wider redshift range, and two independent light-curve models, SALT2 and MLCS2k2. From this catalog, here we present that SNe Ia in low-mass, globally and locally star-forming environments are fainter than those in high-mass, globally and locally passive environments, after light-curve shape and color or extinction corrections. Our results are then compared to previous studies, and show consistent results.

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