Kronberger 49 : a new low-mass globular cluster or an unprecedented bulge window
Fecha
2012Autor
Materia
Abstract
We employ optical and near-infrared photometry to study the stars in the direction of the star cluster candidate Kronberger 49. The optical color–magnitude diagrams (V, I, and Gunn z photometry obtained with the Galileo Telescope) are tight and present evidence of a main-sequence turnoff. We may be dealing with a low-mass, metalrich globular cluster located in the bulge at a distance from the Sun of d = 8 ± 1 kpc. Alternatively, it may be a dust hole through which we are sampling the bulge stel ...
We employ optical and near-infrared photometry to study the stars in the direction of the star cluster candidate Kronberger 49. The optical color–magnitude diagrams (V, I, and Gunn z photometry obtained with the Galileo Telescope) are tight and present evidence of a main-sequence turnoff. We may be dealing with a low-mass, metalrich globular cluster located in the bulge at a distance from the Sun of d = 8 ± 1 kpc. Alternatively, it may be a dust hole through which we are sampling the bulge stellar population affected by a very low amount of differential reddening. ...
En
The Astronomical journal. Vol. 144, no. 5 (Nov. 2012), 147, 11 p.
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