The M33 synoptic stellar survey. III. Miras and LPVs in <i>griJHK<i>S</i> </i>-Reference-Cited by-同舟云学术

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

Published:2024-04-29 Issue:1 Volume:531 Page:110-132
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Konchady Tarini¹^ORCID,Macri Lucas M²^ORCID,Yan Xiaomeng³^ORCID,Huang Jianhua Z⁴^ORCID

Affiliation:

1. The National Academies of Sciences, Engineering, and Medicine, Space Studies Board , Washington, DC 20001 , USA

2. NSF National Optical-Infrared Astronomy Research Laboratory, US Extremely Large Telescope Program , Tucson, AZ 85719 , USA

3. Capital University of Economics and Business, School of Statistics , Beijing 100070 , China

4. Chinese University of Hong Kong, School of Data Science , Shenzhen 518172 , China

Abstract

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.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Oxford University Press (OUP)

Link

https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stae1140/57356852/stae1140.pdf

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