Subdwarf B binaries in the Edinburgh-Cape Survey

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dc.creatorMorales-Rueda, L.
dc.creatorMaxted, P. F. L.
dc.creatorMarsh, T. R.
dc.creatorKilkenny, D.
dc.creatorO'Donoghue, D.
dc.date2005-09-12
dc.date.accessioned2026-07-07T02:18:37Z
dc.date.available2026-07-07T02:18:37Z
dc.descriptionWe give an update of the results of a campaign to obtain orbital solutions of subdwarf B stars from the Edinburgh-Cape survey (Stobie et al. 1997). To date we have obtained blue spectra of 40 subdwarf B stars from the Edinburgh-Cape catalogue using the grating spectrograph at the 1.9m Radcliffe telescope at the South African Astronomical Observatory. We find that 17 out of these 40 are certain binaries with a few other objects showing radial velocity variations of small amplitude. The binary fraction found in our sample, after correcting for our binary detection efficiency, is 48%. We have secured the orbital parameters for 4 of the 17 systems and narrowed down the orbits of another 7 to a small range of periods.
dc.descriptionTo appear in Baltic Astronomy. Proceedings of the Second Meeting on Hot Subdwarf Stars, La Palma, June 2005. Four pages, three figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0509284
dc.identifierhttp://arxiv.org/abs/astro-ph/0509284
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9556
dc.subjectAstrophysics
dc.titleSubdwarf B binaries in the Edinburgh-Cape Survey
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