Binary Properties of Subdwarfs Selected in the GALEX Survey

0388519 - ASÚ 2013 RIV US eng C - Conference Paper (international conference)
Kawka, Adela - Pigulski, A. - O’Toole, S. - Vennes, Stephane - Németh, Péter - Williams, A. - Iliev, L. - Kolaczkowski, Z. - Stęslicki, M.
Binary Properties of Subdwarfs Selected in the GALEX Survey.
Fifth Meeting on Hot Subdwarf Stars and Related Objects. San Francisco: Astronomical Society of the Pacific, 2012 - (Kilkenny, D.), s. 121-128. ASP Conference Series, 452. ISBN 9781583817872.
[Meeting on Hot Subdwarf Stars and Related Objects /5th/. Western Cape (ZA), 25.07.2011-29.07.2011]
R&D Projects: GA AV ČR(CZ) IAA300030908; GA AV ČR IAA301630901; GA ČR GAP209/10/0967
Institutional research plan: CEZ:AV0Z10030501
Keywords : binary stars * identify * analyse
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We describe our programme to identify and analyse binary stars among the bright subdwarfs selected in the Galaxy Evolution Explorer (GALEX) survey. Radial velocity time-series helped us identify subdwarfs with low-mass or compact stellar companions: We describe work conducted on the bright binaries GALEX J0321+4727 and GALEX J2349+3844, and we present a radial velocity study of several objects that include three new likely binaries. We also carried out photometric observations that allowed us to detect long period pulsations in the subdwarf components in two of the close binaries.
Permanent Link: http://hdl.handle.net/11104/0217419