Skip to main content

Research Repository

Advanced Search

REDISCUSSION OF ECLIPSING BINARIES. PAPER 10: THE PULSATING B-TYPE SYSTEM V1388 ORIONIS

Southworth, John; Bowman, Dominic M.

REDISCUSSION OF ECLIPSING BINARIES. PAPER 10: THE PULSATING B-TYPE SYSTEM V1388 ORIONIS Thumbnail


Authors

Dominic M. Bowman



Abstract

V1388 Ori is an early-B type detached eclipsing binary whose physical properties have previously been measured from dedicated spectroscopy and a ground-based survey light curve. We reconsider the properties of the system using newly-available light curves from the Transiting Exoplanet Survey Satellite (TESS). We discover two frequencies in the system, at 2.99 d-1 and 4.00 d-1 which are probably due to beta Cephei or slowly-pulsating B-star pulsations. A large number of additional significant frequencies exist at multiples of the orbital frequency, 0.4572 d-1. We are not able to find a fully satisfactory model of the eclipses, but the best attempts show highly consistent values for the fitted parameters. We find masses of 7.24 +/- 0.08 Msun and 5.03 +/- 0.04 Msun, and radii of 5.30 +/- 0.07 Rsun and 3.14 +/- 0.06 Rsun. The properties of the system are in good agreement with the predictions of theoretical stellar evolutionary models and the Gaia EDR3 parallax if the published temperature estimates are revised downwards by 1500 K, to 19000 K for the larger and more massive star and 17000 K for its companion.

Journal Article Type Article
Acceptance Date Aug 2, 2022
Publication Date Aug 1, 2022
Publicly Available Date Mar 29, 2024
Journal Observatory
Print ISSN 0029-7704
Peer Reviewed Peer Reviewed
Volume 142
Pages 161 - 173
DOI https://doi.org/10.48550/arXiv.2205.08841+Focus+to+learn+more

Files




You might also like



Downloadable Citations