RR Lyrae stars in omega Centauri: Near-IR properties and period-luminosity relations
link https://repositorio.uc.cl/handle/11534/81274account_box Navarrete, C.account_box Catelan , Marcioaccount_box Contreras Ramos, R.account_box Gran, F.account_box Alonso-Garcia, J.
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Omega Centauri contains a rich harvest of variable stars. Here we report on a deep, wide-field, near-infrared (IR) variability survey for this cluster, carried out using ESO's 4.1m VISTA telescope. Our time-series data includes more than 180 RR Lyrae light curves in both J and Ks, allowing us to derive an unprecedented homogeneous and complete near-IR catalog of RR Lyrae in the field of omega Cen. Near-IR period-luminosity relations are derived and used to determine an updated (pulsational) distance modulus for the cluster....
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| Autor | Navarrete, C. Catelan , Marcio Contreras Ramos, R. Gran, F. Alonso-Garcia, J. |
| Título | RR Lyrae stars in omega Centauri: Near-IR properties and period-luminosity relations |
| Fecha de publicación | 2016 |
| Resumen | Omega Centauri contains a rich harvest of variable stars. Here we report on a deep, wide-field, near-infrared (IR) variability survey for this cluster, carried out using ESO's 4.1m VISTA telescope. Our time-series data includes more than 180 RR Lyrae light curves in both J and Ks, allowing us to derive an unprecedented homogeneous and complete near-IR catalog of RR Lyrae in the field of omega Cen. Near-IR period-luminosity relations are derived and used to determine an updated (pulsational) distance modulus for the cluster.... |
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| Tipo de documento | artículo |