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GALEX UV Catalog of Low-redshift Galaxies for Estimating Transient Rates

Published online by Cambridge University Press:  09 June 2023

Jeeun Hwang Open the ORCID record for Jeeun Hwang [Opens in a new window] ,
Myungshin Im ,
Hyeonho Choi ,
Gregory S.H. Paek Open the ORCID record for Gregory S.H. Paek [Opens in a new window]  and
IMSNG team
Jeeun Hwang
Affiliation:
SNU Astronomy Research Center, Astronomy Program, Dept. of Physics & Astronomy, Seoul National University, Seoul, Korea email:jehwang@snu.ac.kr
Myungshin Im
Affiliation:
SNU Astronomy Research Center, Astronomy Program, Dept. of Physics & Astronomy, Seoul National University, Seoul, Korea email:jehwang@snu.ac.kr
Hyeonho Choi
Affiliation:
SNU Astronomy Research Center, Astronomy Program, Dept. of Physics & Astronomy, Seoul National University, Seoul, Korea email:jehwang@snu.ac.kr
Gregory S.H. Paek
Affiliation:
SNU Astronomy Research Center, Astronomy Program, Dept. of Physics & Astronomy, Seoul National University, Seoul, Korea email:jehwang@snu.ac.kr
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Abstract

Detection of transients such as supernovae (SNe) and kilonovae (KNe) in early phase has recently become important for understanding the progenitor properties and multi-messenger astronomy. Predicting which galaxy has the higher probability of hosting the transient events would help detect the early phase of the events and get information on their progenitors. The SN and KN rates are known to be a function of star formation rate (SFR) and stellar mass of the host galaxy. The SFR of a galaxy can be estimated from ultraviolet (UV) luminosity. However, the UV magnitudes have been derived carefully only for a limited number of nearby galaxies. Here, we introduce GALEX galaxy catalog of all-sky UV brightness of low redshift galaxies. To do so, we derive the UV photometry of galaxies in the GLADE catalog using the GALEX AIS images, supplemented by GALEX NGS and MIS data. From the near-UV (NUV) and far-UV (FUV) magnitudes, we calculate the SFRs of the galaxies, which will further be useful for estimating the SN and KN rate. The results are compared with previous GALEX UV catalog of galaxies. There will be an updated catalog based on this catalog for calculating KN rate of the galaxies in the future work.

Keywords

GALEXUVtransientcataloglocal universestar formation rategalaxy
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 249 - 251
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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