Email this article Parameterisation of m-giants from WBVR and ugriz photometry data
- Authors: Zakharov A.A.1, Mironov A.V.1, Malkov O.Y.2
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Affiliations:
- Lomonosov Moscow State University, Sternberg Astronomical Institute
- Institute of Astronomy of the Russian Academy of Sciences
- Issue: Vol 102, No 6 (2025)
- Pages: 480-489
- Section: Articles
- URL: https://rjsvd.com/0004-6299/article/view/690672
- DOI: https://doi.org/10.31857/S0004629925060039
- EDN: https://elibrary.ru/qaqmof
- ID: 690672
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Abstract
The slope of the late giants sequence in some two-colour diagrams differs significantly from the slope of other sequences and from the slope of the interstellar reddening lines. This circumstance makes M giants an indispensable source of data on both stellar parameters and interstellar extinction. The aim of the present study is to find suitable two-colour diagrams for the parameterisation of M-giants and to develop a parameterisation technique from the observed photometry. The work results in a tool for determining the intrinsic colour, spectral type and interstellar extinction parameters for the WBVR and ugriz photometric systems. The work is partially based on a talk presented at the Modern Stellar Astronomy 2024 conference.
About the authors
A. A. Zakharov
Lomonosov Moscow State University, Sternberg Astronomical Institute
Email: zakh@sai.msu.ru
Moscow, Russia
A. V. Mironov
O. Y. Malkov
Institute of Astronomy of the Russian Academy of SciencesMoscow, Russia
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