تقرير
Outliers: multicolour photometry guiding the search for evolved binary systems in the globular cluster 47 Tucanae
| العنوان: | Outliers: multicolour photometry guiding the search for evolved binary systems in the globular cluster 47 Tucanae |
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| المؤلفون: | Campos, Fabiola, Pelisoli, I., Kamann, S., Husser, T. -O., Dreizler, S., Bellini, A., Robinson, E. L., Nardiello, D., Piotto, G., Kepler, S. O., Istrate, A. G., Winget, D. E., Montgomery, M. H., Dotter, A. |
| سنة النشر: | 2018 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies |
| الوصف: | We use Hubble Space Telescope multicolour photometry of the globular cluster 47 Tucanae to uncover a population of 24 objects with no previous classification that are outliers from the single-star model tracks in the colour-magnitude diagram and yet are likely cluster members. By comparing those sources with evolutionary models and X-ray source catalogues, we were able to show that the majority of those sources are likely binary systems that do not have any X-ray source detected nearby, most possibly formed by a white dwarf and a main-sequence star and a small number of possible double-degenerate systems. Comment: 13 pages, 8 figures, 2 tables. Accepted for publication in MNRAS on September 18, 2018 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/sty2591 |
| URL الوصول: | http://arxiv.org/abs/1809.07746 |
| رقم الأكسشن: | edsarx.1809.07746 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnras/sty2591 |
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