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Physical Properties of the Host Galaxies of Ca-rich Transients by Dong, Y.; Milisavljevic, D.; Leja, J.; Sarbadhicary, S. K.; Nugent, A. E.; Margutti, R.; Jacobson-Galan, W. V.; Polin, A.; Banovetz, J.; Reynolds, J. M.; Subrayan, B. is a scholarly article available to read on EtoBox.

What is Physical Properties of the Host Galaxies of Ca-rich Transients about?

Calcium-rich (Ca-rich) transients are a new class of supernovae (SNe) that are known for their comparatively rapid evolution, modest peak luminosities, and strong nebular calcium emission lines. Currently, the progenitor systems of Ca-rich transients remain unknown. Although they exhibit spectroscopic properties not unlike core-collapse Type Ib/c SNe, nearly half are found in the outskirts of their host galaxies that are predominantly elliptical, suggesting a closer connection to the older stellar populations of SNe Ia. In this paper, we present a compilation of publicly available multiwavelength observations of all known and/or suspected host galaxies of Ca-rich transients ranging from FUV to IR, and use these data to characterize their stellar populations with prospector. We estimate several galaxy parameters including integrated star formation rate, stellar mass, metallicity, and age. For nine host galaxies, the observations are sensitive enough to obtain nonparametric star formation histories, from which we recover SN rates and estimate probabilities that the Ca-rich transients in each of these host galaxies originated from a core-collapse vs. Type Ia-like explosion. Our work s

Author

Dong, Y.; Milisavljevic, D.; Leja, J.; Sarbadhicary, S. K.; Nugent, A. E.; Margutti, R.; Jacobson-Galan, W. V.; Polin, A.; Banovetz, J.; Reynolds, J. M.; Subrayan, B.

Published

2022

Language

EN