Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon III. HD 50138

• Authors: JEŘÁBKOVÁ Tereza; KORČÁKOVÁ Daniela; MIROSHNICHENKO A.; DANFORD S.; ZHARIKOV S.V.; KŘÍČEK Radek; ZASCHE Petr; VOTRUBA Viktor; ŠLECHTA Miroslav; ŠKODA Petr; JANÍK Jan
• Year of publication: 2016
• Type: Article in Periodical
• Magazine / Source: Astronomy and Astrophysics
• MU Faculty or unit: Faculty of Science
• Doi: http://dx.doi.org/10.1051/0004-6361/201526290
• Field: Astronomy and astrophysics
• Keywords: circumstellar matter; stars: emission line Be; stars: mass loss; binaries: spectroscopic; stars: individual: MWC 158
• Description: We describe the spectral variability of HD 50138 over the last twenty years. Based on these data, we determine new restrictions for future modelling. We confirm the quasi-periodic behaviour of the object’s spectral variability, which probably reflects mass transfer in a binary system. This behaviour also supports a recently introduced explanation of the nature of FS CMa stars as post-merger systems.