In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 54, no. 2
M. Vaňko - T. Pribulla - N. Shagatova - R. Komžík - P. Dubovský
Detaily:
Rok, strany: 2024, 171 - 174
Jazyk: eng
Kľúčové slová:
binary stars, eclipses, pulsations
URL originálneho zdroja: http://www.astro.sk/caosp/Eedition/Abstracts/2024/Vol_54/No_2/pp171-174_abstract.html
O článku:
Long-term spectroscopic monitoring of the eclipsing system FM CMa obtained between 2017 -- 2023 at the Skalnaté Pleso (SPO, Slovakia) and Cerro-Tololo Interamerican observatories (CTIO, Chile) is presented. Preliminary analysis of the TESS high-precision satellite photometry (sectors 7 and 33, only FFI -- Full Frame Image) shows that the eclipses in the system are total, and there is a slow apsidal motion. The light-curve solution requires a substantial amount of third light. In addition, the TESS light curve exhibits low-amplitude variability (in the out-of-eclipse parts), probably caused by radial pulsations with a frequency of about 5.5 cycles/day (4.3 hours). Line profiles show strong asymmetries corresponding to the photometric ephemeris but the possible third component is not visible. The nature of the system is discussed.
Ako citovať:
ISO 690:
Vaňko, M., Pribulla, T., Shagatova, N., Komžík, R., Dubovský, P. 2024. FM CMa: hot and massive eclipsing binary with a pulsating component. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 54, no.2, pp. 171-174. 1335-1842. DOI: https://doi.org/10.31577/caosp.2024.54.2.171
APA:
Vaňko, M., Pribulla, T., Shagatova, N., Komžík, R., Dubovský, P. (2024). FM CMa: hot and massive eclipsing binary with a pulsating component. Contributions of the Astronomical Observatory Skalnaté Pleso, 54(2), 171-174. 1335-1842. DOI: https://doi.org/10.31577/caosp.2024.54.2.171
O vydaní:
Vydavateľ: Astronomical Institute, Slovak Academy of Sciences
Publikované: 1. 2. 2024
Verejná licencia:
