Improved model of Delta Orionis

0534619 - ASÚ 2021 RIV SK eng J - Journal Article
Oplištilová, A. - Harmanec, P. - Mayer, P. - Zasche, P. - Šlechta, Miroslav - Pablo, H. - Pigulski, A.
Improved model of Delta Orionis.
Contributions of the Astronomical Observatory Skalnaté Pleso. Roč. 50, č. 2 (2020), s. 585-589. ISSN 1335-1842. E-ISSN 1336-0337
Institutional support: RVO:67985815
Keywords : eclipsing binary stars * spectroscopic analysis * light curves
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 0.316, year: 2020
Method of publishing: Open access

We present an improved model of triple star Delta Orionis A. For the first time we were able to disentangle the very weak spectral lines of the secondary in the blue parts of the optical spectrum and derive a reliable mass ratio q = 0:415. Along with light-curve solutions, based on photometry from the SMEI, MOST and BRITE satellites, we obtained realistic masses and radii of both components of the close binary.
Permanent Link: http://hdl.handle.net/11104/0312791