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The stellar cluster GLIMPSE-C01 is a dense stellar system located in the Galactic Plane. Though often referred to in the literature as an old globular cluster traversing the Galactic disk, previous observations do not rule out that it is an…

Astrophysics of Galaxies · Physics 2015-05-20 Ben Davies , Nate Bastian , Mark Gieles , Anil C. Seth , Sabine Mengel , Iraklis S. Konstantopoulos

We present a multi-wavelength photometric and spectroscopic study of a newly discovered candidate cluster [DBS2003] 45. Our H, Ks photometry confirms that [DBS2003] 45 is a cluster. An average visual extinction Av 7.1+/-0.5 is needed to fit…

Astrophysics of Galaxies · Physics 2015-05-13 Qingfeng Zhu , Ben Davies , Donald F. Figer , Christine Trombley

This paper is part of a project to search the inner Milky Way for hidden massive clusters and to address the question of whether our Galaxy still forms clusters similar to the progenitors of the present-day globular clusters. We report high…

Astrophysics · Physics 2009-11-10 J. Borissova , V. D. Ivanov , D. Minniti , D. Geisler , A. W. Stephens

We have obtained V and I images of the lone globular cluster that belongs to the dwarf Local Group irregular galaxy known as WLM. The color-magnitude diagram of the cluster shows that it is a normal old globular cluster with a well-defined…

Astrophysics · Physics 2009-10-31 Paul W. Hodge , Andrew E. Dolphin , Toby R. Smith , Mario Mateo

We present deep near-infrared photometry and spectroscopy of the globular cluster 2MASS-GC03 projected in the Galactic disk using MMIRS on the Clay telescope (Las Campanas Observatory) and VISTA Variables in the Via Lactea survey (VVV)…

Nearly 500 cluster candidates have been reported by searches based on the new all-sky near infrared surveys. The true nature of the majority of these objects is still unknown. This project aims to estimate the physical parameters of some of…

Astrophysics · Physics 2009-11-10 V. D. Ivanov , J. Borissova , F. Bresolin , P. Pessev

We study the nature of the globular cluster (GC) candidates FSR 1603 and FSR 1755 selected from the catalogue of \citet{FSRcat}. Their properties are investigated with 2MASS field-star decontaminated photometry, which is used to build…

Astrophysics · Physics 2009-11-13 Eduardo Bica , Charles Bonatto

The estimated total number of Milky Way globulars is 160+-20. The question of whether there are any more undiscovered globular clusters in the Milky Way is particularly relevant with advances in near and mid-IR instrumentation. This…

Astrophysics · Physics 2009-11-13 R. Kurtev , V. D. Ivanov , J. Borissova , S. Ortolani

An earlier analysis of the Milky Way Star Cluster (MWSC) catalogue revealed an apparent lack of old (> 1 Gyr) open clusters in the solar neighbourhood (< 1 kpc). To fill this gap we undertook a search for hitherto unknown star clusters,…

Astrophysics of Galaxies · Physics 2014-09-05 S. Schmeja , N. V. Kharchenko , A. E. Piskunov , S. Röser , E. Schilbach , D. Froebrich , R. -D. Scholz

We report on $BVI$ CCD photometry of a field centered in the region of the Galactic star cluster Whiting~1 down to $V=23.0$. This cluster has never been studied insofar, and we provide for the first time estimates of its fundamental…

Astrophysics · Physics 2009-11-10 Giovanni Carraro

Young massive clusters are perfect astrophysical laboratories for study of massive stars. Clusters with Wolf-Rayet (WR) stars are of special importance, since this enables us to study a coeval WR population at a uniform metallicity and…

Astrophysics · Physics 2009-11-13 R. Kurtev , J. Borissova , L. Georgiev , S. Ortolani , V. D. Ivanov

The spatial distribution of known globular clusters (GCs) in the Milky Way shows that the current census of GCs is incomplete in the direction of the Galactic plane. We present the discovery of two new GCs located close to the Galactic…

Astrophysics of Galaxies · Physics 2018-08-29 Jinhyuk Ryu , Myung Gyoon Lee

Physical properties were derived for the candidate open cluster La Serena 94, recently unveiled by the VVV collaboration. Thanks to the exquisite angular resolution provided by GeMS/GSAOI, we could characterize this system in detail, for…

Solar and Stellar Astrophysics · Physics 2016-08-08 J. F. C. Santos , A. Roman-Lopes , E. R. Carrasco , F. F. S. Maia , B. Neichel

We are conducting a large program to classify newly discovered Milky Way star cluster candidates from the list of Froebrich, Scholz & Raftery (2007). Here we present deep NIR follow-up observations from ESO/NTT of 14 star cluster…

Astrophysics · Physics 2009-11-13 D. Froebrich , H. Meusinger , A. Scholz

Globular clusters in the Galactic bulge are difficult to study due to high extinction and severe crowding. VVV-CL001 is an old, metal-poor, and fast cluster in the inner bulge, whose extreme properties make it a key probe of the early…

We present the basic properties of three objects near the Galactic Plane - a large galaxy and two candidate globular clusters - discovered in the Two Micron All Sky Survey (2MASS) dataset. All were noted during spot-checks of the data…

Star clusters are invaluable tracers of the Galactic components and the discovery and characterization of low-mass stellar systems can be used to appraise their prevailing disruption mechanisms and time scales. However, owing to the…

Astrophysics of Galaxies · Physics 2017-09-27 Andreas Koch , Andrea Kunder , Jennifer Wojno

The VISTA Variables in the Via L\'actea Extended Survey (VVVX) enables exploration of previously uncharted territories within the inner Milky Way (MW), particularly those obscured by stellar crowding and intense extinction. Our objective is…

Astrophysics of Galaxies · Physics 2024-09-11 Saroon S , Bruno Dias , Dante Minniti , M. C. Parisi , Matías Gómez , Javier Alonso-García

We report on the discovery of a galaxy cluster at z = 1.490 originally selected as an extended X-ray source in the XMM-Newton Distant Cluster Project. Further observations carried out with the VLT-FORS2 spectrograph allowed the…

We report the discovery of RG1M0150, a massive, recently quenched galaxy at z=2.636 that is multiply imaged by the cluster MACSJ0150.3-1005. We derive a stellar mass of log M_*=11.49+0.10-0.16 and a half-light radius of R_e,maj =1.8+-0.4…

Astrophysics of Galaxies · Physics 2015-10-28 Andrew B. Newman , Sirio Belli , Richard S. Ellis