Number of the records: 1  

HD 161306: a radiatively interacting Be binary?

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    SYSNO ASEP0433681
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleHD 161306: a radiatively interacting Be binary?
    Author(s) Koubský, Pavel (ASU-R) RID, ORCID
    Kotková, Lenka (ASU-R)
    Kraus, Michaela (ASU-R) RID, ORCID
    Yang, S. (CA)
    Šlechta, Miroslav (ASU-R) RID, ORCID
    Harmanec, P. (CZ)
    Wolf, M. (CZ)
    Votruba, Viktor (ASU-R) RID
    Kubát, Jiří (ASU-R) RID, ORCID
    Kubátová, Brankica (ASU-R) RID, ORCID
    Niemczura, E. (PL)
    Škoda, Petr (ASU-R) RID, ORCID
    Source TitleAstronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
    Roč. 567, July (2014), A57/1-A57/4
    Number of pages4 s.
    Publication formPrint - P
    Languageeng - English
    CountryFR - France
    Keywordsbinaries: spectroscopic ; stars: emission-line ; Be: stars
    Subject RIVBN - Astronomy, Celestial Mechanics, Astrophysics
    R&D ProjectsGA14-21373S GA ČR - Czech Science Foundation (CSF)
    LG14026 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Institutional supportASU-R - RVO:67985815
    UT WOS000341185300144
    DOI10.1051/0004-6361/201424022
    AnnotationThe spectrum of the Be star HD 161306 is shown to vary periodically with a period close to 100 days. The radial velocity of the He I 6678 A emission peak varying in antiphase to the radial velocity of the Halpha emission wings component suggests that the star is a binary similar to phi Per, 59 Cyg, or FY CMa, i.e. a radiatively interacting Be binary - a rare case among Be stars. This type of object is also called a phi Per-type binary or Be + sdO binaries. The range of radial-velocity variations of the strong emission peak in the helium line observed in HD 161306 is about 180 km/s, similar to what is observed for these systems. We therefore conclude that HD 161306 may represent another case of a Be star with a hot subdwarf companion.
    WorkplaceAstronomical Institute
    ContactRadka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
    Year of Publishing2015
Number of the records: 1  

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