In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 54, no. 2
M. Vaňko - T. Pribulla - N. Shagatova - R. Komžík - P. Dubovský
Details:
Year, pages: 2024, 171 - 174
Language: eng
Keywords:
binary stars, eclipses, pulsations
Original source URL: http://www.astro.sk/caosp/Eedition/Abstracts/2024/Vol_54/No_2/pp171-174_abstract.html
About article:
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.
How to cite:
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
About edition:
Publisher: Astronomical Institute, Slovak Academy of Sciences
Published: 1. 2. 2024
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