A survey of hot subdwarf pulsators in ω Cen
link https://doi.org/10.1051/epjconf/20134304006account_box Randal, S. K.account_box Calamida, A.account_box Fontaine, G.account_box Green, E. M.account_box Monelli, M.account_box Alonso, M. L.account_box Catelan , Marcioaccount_box Bono, G.account_box Dhillon, V. S.account_box Marsh, T. R.
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We recently discovered an apparently new class of pulsating Extreme Horizontal Branch (EHB) star in ω Cen. Tightly clustered around ∼50,000 K, these H-rich sdO stars exhibit rapid, multi-periodic oscillations on a timescale of 100 s. While four such objects have been detected in ω Cen, no counterparts have yet been found among the field population. Conversely, the rapid sdB pulsators around 31,000 K that are well-studied in the Galactic field have yet to be found in a globular cluster. We discuss the implications of this and also report the discovery of a fifth EHB pulsator in ω Cen....
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| Autor | Randal, S. K. Calamida, A. Fontaine, G. Green, E. M. Monelli, M. Alonso, M. L. Catelan , Marcio Bono, G. Dhillon, V. S. Marsh, T. R. |
| Título | A survey of hot subdwarf pulsators in ω Cen |
| Fecha de publicación | 2013 |
| Resumen | We recently discovered an apparently new class of pulsating Extreme Horizontal Branch (EHB) star in ω Cen. Tightly clustered around ∼50,000 K, these H-rich sdO stars exhibit rapid, multi-periodic oscillations on a timescale of 100 s. While four such objects have been detected in ω Cen, no counterparts have yet been found among the field population. Conversely, the rapid sdB pulsators around 31,000 K that are well-studied in the Galactic field have yet to be found in a globular cluster. We discuss the implications of this and also report the discovery of a fifth EHB pulsator in ω Cen.... |
| Derechos | acceso abierto |
| DOI | 10.1051/epjconf/20134304006 |
| Enlace | |
| Tipo de documento | comunicación de congreso |