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The M33 synoptic stellar survey. III. Miras and LPVs in griJHKS.

Authors :
Konchady, Tarini
Macri, Lucas M
Yan, Xiaomeng
Huang, Jianhua Z
Source :
Monthly Notices of the Royal Astronomical Society. Jun2024, Vol. 531 Issue 1, p110-132. 23p.
Publication Year :
2024

Abstract

We present the results of a search for Miras and long-period variables (LPVs) in M33 using griJHKS archival observations from the Canada–France–Hawaii Telescope. We use multiband information and machine learning techniques to identify and characterize these variables. We recover ∼1300 previously discovered Mira candidates and identify ∼13 000 new Miras and LPVs. We detect for the first time a clear first-overtone pulsation sequence among Mira candidates in this galaxy. We use O-rich, fundamental-mode Miras in the LMC and M33 to derive a distance modulus for the latter of μ = 24.629 ± 0.046 mag. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00358711
Volume :
531
Issue :
1
Database :
Academic Search Index
Journal :
Monthly Notices of the Royal Astronomical Society
Publication Type :
Academic Journal
Accession number :
177681451
Full Text :
https://doi.org/10.1093/mnras/stae1140