Matches in SemOpenAlex for { <https://semopenalex.org/work/W3102523252> ?p ?o ?g. }
- W3102523252 endingPage "A149" @default.
- W3102523252 startingPage "A149" @default.
- W3102523252 abstract "Subluminous B stars (sdBs) form the extremely hot end of the horizontal branch and are therefore related to the blue horizontal branch (BHB) stars. While the rotational properties of BHB stars have been investigated extensively, studies of sdB stars have concentrated on close binaries that are influenced by tidal interactions between their components. Here we present a study of 105 sdB stars, which are either single stars or in wide binaries where tidal effects become negligible. The projected rotational velocities have been determined by measuring the broadening of metal lines using high-resolution optical spectra. All stars in our sample are slow rotators (vrotsini < 10 km s-1). Furthermore, the vrotsini-distributions of single sdBs are similar to those of hot subdwarfs in wide binaries with main-sequence companions as well as close binary systems with unseen companions and periods exceeding ≃1.2 d. We show that blue horizontal and extreme horizontal branch stars are also related in terms of surface rotation and angular momentum. Hot BHB stars (Teff > 11 500 K) with diffusion-dominated atmospheres are slow rotators like the hot subdwarf stars located on the extreme horizontal branch, which lost more envelope and therefore angular momentum in the red-giant phase. The uniform rotation distributions of single and wide binary sdBs pose a challenge to our understanding of hot subdwarf formation. Especially the high fraction of helium white dwarf mergers predicted by theory seems to be inconsistent with the results presented here." @default.
- W3102523252 created "2020-11-23" @default.
- W3102523252 creator A5038398336 @default.
- W3102523252 creator A5039083242 @default.
- W3102523252 date "2012-07-01" @default.
- W3102523252 modified "2023-10-02" @default.
- W3102523252 title "Hot subdwarf stars in close-up view" @default.
- W3102523252 cites W1540138031 @default.
- W3102523252 cites W1621377203 @default.
- W3102523252 cites W1753916054 @default.
- W3102523252 cites W1907874666 @default.
- W3102523252 cites W1963796984 @default.
- W3102523252 cites W1965296380 @default.
- W3102523252 cites W1965337953 @default.
- W3102523252 cites W1969474282 @default.
- W3102523252 cites W1969661884 @default.
- W3102523252 cites W1970638568 @default.
- W3102523252 cites W1971750150 @default.
- W3102523252 cites W1982139155 @default.
- W3102523252 cites W1982683895 @default.
- W3102523252 cites W1985626822 @default.
- W3102523252 cites W1994058135 @default.
- W3102523252 cites W2003658876 @default.
- W3102523252 cites W2008322016 @default.
- W3102523252 cites W2008663952 @default.
- W3102523252 cites W2011639865 @default.
- W3102523252 cites W2014635430 @default.
- W3102523252 cites W2019546817 @default.
- W3102523252 cites W2019988342 @default.
- W3102523252 cites W2025806659 @default.
- W3102523252 cites W2027757082 @default.
- W3102523252 cites W2029733876 @default.
- W3102523252 cites W2033629241 @default.
- W3102523252 cites W2037602118 @default.
- W3102523252 cites W2038347333 @default.
- W3102523252 cites W2047747492 @default.
- W3102523252 cites W2051918640 @default.
- W3102523252 cites W2066381051 @default.
- W3102523252 cites W2066538617 @default.
- W3102523252 cites W2066746846 @default.
- W3102523252 cites W2068453264 @default.
- W3102523252 cites W2069023289 @default.
- W3102523252 cites W2074290792 @default.
- W3102523252 cites W2077343992 @default.
- W3102523252 cites W2083149267 @default.
- W3102523252 cites W2084460542 @default.
- W3102523252 cites W2084626646 @default.
- W3102523252 cites W2090645204 @default.
- W3102523252 cites W2094017243 @default.
- W3102523252 cites W2094118560 @default.
- W3102523252 cites W2103834171 @default.
- W3102523252 cites W2107420611 @default.
- W3102523252 cites W2110550364 @default.
- W3102523252 cites W2112029042 @default.
- W3102523252 cites W2115924252 @default.
- W3102523252 cites W2116711805 @default.
- W3102523252 cites W2120658204 @default.
- W3102523252 cites W2121721108 @default.
- W3102523252 cites W2122481656 @default.
- W3102523252 cites W2124380423 @default.
- W3102523252 cites W2128582331 @default.
- W3102523252 cites W2134567289 @default.
- W3102523252 cites W2139986422 @default.
- W3102523252 cites W2146992090 @default.
- W3102523252 cites W2156831129 @default.
- W3102523252 cites W2161928458 @default.
- W3102523252 cites W2165526680 @default.
- W3102523252 cites W2916729117 @default.
- W3102523252 cites W2962903074 @default.
- W3102523252 cites W3009883955 @default.
- W3102523252 cites W3023514852 @default.
- W3102523252 cites W3098648456 @default.
- W3102523252 cites W3099247839 @default.
- W3102523252 cites W3099993199 @default.
- W3102523252 cites W3100027767 @default.
- W3102523252 cites W3100412292 @default.
- W3102523252 cites W3103590648 @default.
- W3102523252 cites W3104316444 @default.
- W3102523252 cites W3104443745 @default.
- W3102523252 cites W3104698279 @default.
- W3102523252 cites W3105107675 @default.
- W3102523252 cites W3122483938 @default.
- W3102523252 cites W3125541119 @default.
- W3102523252 cites W4295989156 @default.
- W3102523252 cites W4298230037 @default.
- W3102523252 cites W4299292810 @default.
- W3102523252 cites W4299293761 @default.
- W3102523252 cites W4300172080 @default.
- W3102523252 cites W4300617985 @default.
- W3102523252 doi "https://doi.org/10.1051/0004-6361/201219463" @default.
- W3102523252 hasPublicationYear "2012" @default.
- W3102523252 type Work @default.
- W3102523252 sameAs 3102523252 @default.
- W3102523252 citedByCount "42" @default.
- W3102523252 countsByYear W31025232522012 @default.
- W3102523252 countsByYear W31025232522013 @default.
- W3102523252 countsByYear W31025232522014 @default.
- W3102523252 countsByYear W31025232522015 @default.