Academic Journal
1
| العنوان: | 1 |
|---|---|
| المؤلفون: | C. Greco, V. Ripepi, L. Federici, G. Clementini, L. Di Fabrizio, L. Baldacci, M. Maio, M. Marconi, I. Musella, P. B. Stetson |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/astro-ph/0509319v1.pdf. |
| سنة النشر: | 2005 |
| المجموعة: | CiteSeerX |
| الوصف: | We have used DOLORES at the TNG to obtain B, V time series photometry of NGC 2419, one of the most distant and bright clusters in the Galactic halo. These data will be used to study its variable star population in order to check whether the cluster could be the relic of an extragalactic system accreted by the Milky Way. Using the Image Subtraction technique we have identified about 300 candidate variables, many of which are in the cluster central regions. Several of the variables appear to be RR Lyrae stars, but we detected variability also around the tip of the red giant branch, and in other regions of the colourmagnitude diagram. To improve the light curve sampling and to resolve variables in the cluster inner regions, the TNG data were combined with HST archive data. Preliminary results are presented on the light curves from the combined data set. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.257.8017; http://arxiv.org/pdf/astro-ph/0509319v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.257.8017 http://arxiv.org/pdf/astro-ph/0509319v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.E0977C89 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |