| Autor: |
Konchady, Tarini, Macri, Lucas M, Yan, Xiaomeng, Huang, Jianhua Z |
| Předmět: |
|
| Zdroj: |
Monthly Notices of the Royal Astronomical Society; Jun2024, Vol. 531 Issue 1, p110-132, 23p |
| Abstrakt: |
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] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
