dc.contributor.author | Weston, S. | |
dc.contributor.author | Napiwotzki, R. | |
dc.contributor.author | Catalan, S. | |
dc.date.accessioned | 2011-04-07T14:30:13Z | |
dc.date.available | 2011-04-07T14:30:13Z | |
dc.date.issued | 2010 | |
dc.identifier.citation | Weston , S , Napiwotzki , R & Catalan , S 2010 , Anyone out there? Galactic halo post-AGB stars . in In: AIP Conference Proceedings, 17th European White Dwarf Workshop 1273 (1) . American Institute of Physics (AIP) , pp. 197-202 . | |
dc.identifier.other | dspace: 2299/5591 | |
dc.identifier.uri | http://hdl.handle.net/2299/5591 | |
dc.description | "Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics." | |
dc.description.abstract | We present results of a survey of post-asymptotic giant branch stars (post-AGBs) at high galactic latitude. To date, few post-AGB stars are known throughout the Galaxy and the number of known members of the older populations like the galactic halo is even smaller. This study looks at the number of post-AGB stars which are produced using different synthetic population methods and compare the results with observations. The resulting synthetic populations are compared to observational results from a complete and studied subsample from the photographic Palomar-Green (PG) survey (with high resolution spectroscopic follow-up for post-AGB candidates) and the SDSS spectroscopic database. The results show only two candidate post-AGB stars in a complete subsample of the PG survey spanning 4200 square degrees and one in the SDSS database. We discuss and explore any observational biases which may cause the result. If found to be truely representative of the halo population, one can expect the majority of Population II stars to fail to ascend the AGB and evolve through other evolutionary channels such as the extended horizontal branch. | en |
dc.format.extent | 130783 | |
dc.language.iso | eng | |
dc.publisher | American Institute of Physics (AIP) | |
dc.relation.ispartof | In: AIP Conference Proceedings, 17th European White Dwarf Workshop 1273 (1) | |
dc.subject | stars: evolution | |
dc.subject | stars: AGB and post-AGB | |
dc.subject | Galaxy: halo | |
dc.title | Anyone out there? Galactic halo post-AGB stars | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
rioxxterms.type | Other | |
herts.preservation.rarelyaccessed | true | |