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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

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Svazek periodika

450

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

35

Strana od-do

3514-3548

Kód UT WoS článku

000360824000012

EID výsledku v databázi Scopus

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