Hot subdwarf formation: Confronting theory with observation
The formation of hot subdwarf stars is still unclear. Both single-star and binary scenarios have been proposed to explain the properties of these evolved stars situated at the extreme blue end of the horizontal branch. The observational evidence gathered in the last decade, which revealed high fract...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-03-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20134304001 |
| _version_ | 1818950649501450240 |
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| author | Geier S. |
| author_facet | Geier S. |
| author_sort | Geier S. |
| collection | DOAJ |
| description | The formation of hot subdwarf stars is still unclear. Both single-star and binary scenarios have been proposed to explain the properties of these evolved stars situated at the extreme blue end of the horizontal branch. The observational evidence gathered in the last decade, which revealed high fractions of binaries, shifted the focus from the single-star to the binary formation scenarios. Common envelope ejection, stable Roche lobe overflow and the merger of helium white dwarfs seemed to be sufficient to explain the formation of both the binary as well as the remaining single hot subdwarfs. However, most recent and rather unexpected observations challenge the standard binary evolution scenarios. |
| first_indexed | 2024-12-20T09:21:57Z |
| format | Article |
| id | doaj.art-2ff522d9f1aa46a499adb745c11e32a0 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-20T09:21:57Z |
| publishDate | 2013-03-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-2ff522d9f1aa46a499adb745c11e32a02022-12-21T19:45:17ZengEDP SciencesEPJ Web of Conferences2100-014X2013-03-01430400110.1051/epjconf/20134304001Hot subdwarf formation: Confronting theory with observationGeier S.The formation of hot subdwarf stars is still unclear. Both single-star and binary scenarios have been proposed to explain the properties of these evolved stars situated at the extreme blue end of the horizontal branch. The observational evidence gathered in the last decade, which revealed high fractions of binaries, shifted the focus from the single-star to the binary formation scenarios. Common envelope ejection, stable Roche lobe overflow and the merger of helium white dwarfs seemed to be sufficient to explain the formation of both the binary as well as the remaining single hot subdwarfs. However, most recent and rather unexpected observations challenge the standard binary evolution scenarios.http://dx.doi.org/10.1051/epjconf/20134304001 |
| spellingShingle | Geier S. Hot subdwarf formation: Confronting theory with observation EPJ Web of Conferences |
| title | Hot subdwarf formation: Confronting theory with observation |
| title_full | Hot subdwarf formation: Confronting theory with observation |
| title_fullStr | Hot subdwarf formation: Confronting theory with observation |
| title_full_unstemmed | Hot subdwarf formation: Confronting theory with observation |
| title_short | Hot subdwarf formation: Confronting theory with observation |
| title_sort | hot subdwarf formation confronting theory with observation |
| url | http://dx.doi.org/10.1051/epjconf/20134304001 |
| work_keys_str_mv | AT geiers hotsubdwarfformationconfrontingtheorywithobservation |