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Article overview
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New subdwarf B star periods | | L. Morales-Rueda
; P. F. L. Maxted
; T. R. Marsh
; R. C. North
; | | Date: |
26 Sep 2002 | | Subject: | astro-ph | | Affiliation: | 1,2), T. R. Marsh , R. C. North (1,3)( University of Southampton, Keele University, Meteorological Office | | Abstract: | Subdwarf B (sdB) stars are thought to be helium burning stars with low mass hydrogen envelopes. Several evolutionary paths have been proposed to explain the formation of these systems. One of these scenarios is the evolution of the sdB progenitor within a binary system. We have looked systematically at bright sdB stars from the PG survey. By taking spectra at several different epochs we have measured the radial velocity shifts caused by the motion of the sdB star within the binary. Our data have been taken over a long time base line (2 years) which allowed us to find longer period binaries than known before. Here we present results for 29 sdB systems. | | Source: | arXiv, astro-ph/0209552 | | Services: | Forum | Review | PDF | Favorites | |
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