FSR 1716: a new Milky Way globular cluster confirmed using VVV RR Lyrae stars

We use deep multi-epoch near-IR images of the VISTA Variables in the V\'ia L\'actea (VVV) Survey to search for RR Lyrae stars towards the Southern Galactic plane. Here we report the discovery of a group of RR Lyrae stars close together in VVV tile d025. Inspection of the VVV images and PSF...

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Bibliographic Details
Main Authors: Minniti, Dante (Author) , Dékány, István (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: 2017
In: Arxiv

Online Access:Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1703.02033
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Author Notes:Dante Minniti, Tali Palma, Istvan Dékány, Maren Hempel, Marina Rejkuba, Joyce Pullen, Javier Alonso-García, Rodolfo Barbá, Beatriz Barbuy, Eduardo Bica, Charles Bonatto, Jura Borissova, Marcio Catelan, Julio A. Carballo-Bello, Andre Nicolas Chene, Juan J. Clariá, Roger E. Cohen, Rodrigo Contreras-Ramos, Bruno Dias, Jim Emerson, Dirk Froebrich, Anne S. M. Buckner, Douglas Geisler, Oscar A. Gonzalez, Felipe Gran, Gergely Hagdu, Mike Irwin, Valentin D. Ivanov, Radostin Kurtev, Philip W. Lucas, Daniel Majaess, Francesco Mauro, Christian Moni-Bidin, Camila Navarrete, Sebastian Ramírez Alegría, Roberto K. Saito, Elena Valenti, Manuela Zoccali
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Summary:We use deep multi-epoch near-IR images of the VISTA Variables in the V\'ia L\'actea (VVV) Survey to search for RR Lyrae stars towards the Southern Galactic plane. Here we report the discovery of a group of RR Lyrae stars close together in VVV tile d025. Inspection of the VVV images and PSF photometry reveals that most of these stars are likely to belong to a globular cluster, that matches the position of the previously known star cluster FSR\,1716. The stellar density map of the field yields a $>100$ sigma detection for this candidate globular cluster, that is centered at equatorial coordinates $RA_{J2000}=$16:10:30.0, $DEC_{J2000}=-$53:44:56; and galactic coordinates $l=$329.77812,
Item Description:Gesehen am 24.10.2017
Physical Description:Online Resource