HST spectroscopy of chemically peculiar hot subdwarfs: PG 0909+276 and UVO0512-08
| dc.contributor | Armagh Observatory and Planetarium, N. Ireland and University of Shefleld, Department of Astrophysics, Shefleld, UK | |
| dc.contributor.author | Wild, James | |
| dc.contributor.author | Jeffery, Christopher Simon | |
| dc.date.accessioned | 2024-07-24T13:27:33Z | |
| dc.date.available | 2024-07-24T13:27:33Z | |
| dc.date.issued | 2017-12-01T00:00:00Z | |
| dc.identifier.doi | 10.1515/astro-2017-0451 | |
| dc.identifier.other | 2017OAst...26..246W | |
| dc.identifier.other | 10.1515/astro-2017-0451 | |
| dc.identifier.other | - | |
| dc.identifier.other | 0000-0002-9967-590X | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14302/2070 | |
| dc.description.abstract | High-resolution ultraviolet spectroscopy of two chemically peculiar hot subdwarfs, PG 0909+276 and UVO0512-08, has been obtained using the Hubble Space Telescope. Chemical abundances in the stars' atmospheres were measured from previous optical spectra and from the new ultraviolet observations. Iron-group metals, including cobalt, copper and zinc, are highly enriched relative to typical subdwarf B (sdB) stars. Lead is also enriched, but with an abundance similar to other sdB stars. The surface chemistry of these two stars is quite distinct from both hydrogen-rich normal sdB stars and also from the intermediate helium-rich sdB stars which show heavy-element superabundances. A full explanation for exotic chemistries in hot subdwarfs remains elusive. | |
| dc.publisher | Open Astronomy | |
| dc.title | HST spectroscopy of chemically peculiar hot subdwarfs: PG 0909+276 and UVO0512-08 | |
| dc.type | article | |
| dc.source.journal | OAst | |
| dc.source.journal | OAst...26 | |
| dc.source.volume | 26 | |
| refterms.dateFOA | 2024-07-24T13:27:33Z | |
| dc.identifier.bibcode | 2017OAst...26..246W |
