New binaries among UV-selected, hot subdwarf stars and population properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00449327" target="_blank" >RIV/67985815:_____/15:00449327 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1093/mnras/stv821" target="_blank" >http://dx.doi.org/10.1093/mnras/stv821</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stv821" target="_blank" >10.1093/mnras/stv821</a>

Result language
angličtina
Original language name
New binaries among UV-selected, hot subdwarf stars and population properties
Original language description
We have measured the orbital parameters of seven close binaries, including six new objects, in a radial velocity survey of 38 objects comprising a hot subdwarf star. One new system, GALEX J2205-3141, shows reflection on an M dwarf companion. Three otherobjects show significant short-period variations, but their orbital parameters could not be constrained. Two systems comprising a hot subdwarf paired with a bright main-sequence/giant companion display short-period photometric variations possibly due toirradiation or stellar activity and are also short-period candidates. All except two candidates were drawn from a selection of subluminous stars in the Galaxy Evolution Explorer ultraviolet sky survey. Our new identifications also include a low-mass subdwarf B star and likely progenitor of a low-mass white dwarf (GALEX J0805-1058) paired with an unseen, possibly substellar, companion. Photometric time series suggest that, apart from GALEX J0805-1058 and J2205-3141, the companions are mos
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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