Outliers : multicolour photometry guiding the search for evolved binary systems in the globular cluster 47Tucanae
Fecha
2018Autor
Abstract
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 po ...
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. ...
En
Monthly notices of the royal astronomical society. Oxford. Vol. 481, no. 4 (Dec. 2018), p. 4397–4409
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Artículos de Periódicos (39123)Ciencias Exactas y Naturales (5955)
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