The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 36 Issue 2
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- Pages.69.2-69.2
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- 2011
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- 1226-2692(pISSN)
The Dependence of Type Ia Supernovae Luminosities on the Morphologies of Host-Galaxies
- Kim, Young-Lo (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University) ;
- Kang, Yi-Jung (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University) ;
- Joe, Young-Hoon (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University) ;
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Lee, Young-Wook
(Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University)
- Published : 2011.10.05
Abstract
The discovery of dark energy from Type Ia supernovae (SN Ia) is based on the implicit assumption that the look-back time evolution of SN Ia luminosity, after light-curve corrections, would be negligible. A strong support for this assumption was the apparent insensitivity of SN Ia distances across the host galaxy morphologies. However, Hicken et al. 2009 (H09) shows a systematic difference in the Hubble residual (HR) of
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