PoS - Proceedings of Science
Volume 362 - Multifrequency Behaviour of High Energy Cosmic Sources - XIII (MULTIF2019) - Cosmology
Influence of host galaxy morphology on the properties of Type Ia supernovae from JLA and Pantheon compilations
M. Pruzhinskaya*, A. Novinskaya, P. Rosnet and N. Pauna
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Pre-published on: November 23, 2020
Published on: December 03, 2020
In this work we show the correlation between host galaxy morphology and light curve parameters of Type Ia supernovae. The analysis is based on two most recent cosmological samples of supernovae: JLA (Joint Light-curve Analysis) and Pantheon. We confirm that the stretch-parameter depends on the host morphology, but there is no any correlation for the colour. This result is in the line of other analyses showing the environment dependence of Type Ia supernova light curves. We stress the importance of including the host morphology term to the supernova standardization procedure.
DOI: https://doi.org/10.22323/1.362.0015
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