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Automated search for star clusters in J,H,K_s data from 2MASS catalog has been performed using the method developed by Koposov et. al (2008). We have found and verified 153 new clusters in the interval of the galactic latitude -24 < b < 24…

Astrophysics of Galaxies · Physics 2010-11-26 Elena Glushkova , Sergey Koposov , Ivan Zolotukhin , Yuri Beletsky , Andrey Vlasov , Svetlana Leonova

We present the first results of an [O III] 5007 A interference filter survey for Planetary Nebulae (PNe) in the Galactic bulge. Covering (at first) the 66 per cent of the survey area, we detected a total of 90 objects, including 25 new PNe,…

We study the evolution and observability of young compact star clusters within about 200pc of the Galactic center. Calculations are performed using direct N-body integration on the GRAPE-4, including the effects of both stellar and binary…

Astrophysics · Physics 2009-10-31 Simon Portegies Zwart , Junichiro Makino , Stephen McMillan , Piet Hut

Context: The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical colours alone. Previous studies of extragalactic globular…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 A. L. Chies-Santos , S. S. Larsen , E. M. Wehner , H. Kuntschner , J. Strader , J. P. Brodie

Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large data base, 151,244 clusters…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-07 Z. L. Wen , J. L. Han

We present 11 new open cluster candidates found in a systematic search for unknown star clusters using the astrometric and photometric data included in the Tycho2 catalog. The possible existence of these stellar aggregates is supported by…

Astrophysics · Physics 2009-11-10 B. S. Alessi , A. Moitinho , W. S. Dias

Careful analyses of photometric and star count data available for the nine putative young clusters identified by Camargo et al. (2015, 2016) at high Galactic latitudes reveal that none of the groups contain early-type stars, and most are…

Astrophysics of Galaxies · Physics 2017-06-28 D. G. Turner , G. Carraro , E. A. Panko

We report 1,656 new star clusters found in the Galactic disk (|b|<20 degrees) beyond 1.2 kpc, using Gaia EDR3 data. Based on an unsupervised machine learning algorithm, DBSCAN, and followed our previous studies, we utilized a unique method…

Astrophysics of Galaxies · Physics 2022-12-28 Zhihong He , Xiaochen Liu , Yangping Luo , Kun Wang , Qingquan Jiang

We present new automatic methods of search for star clusters using the data available in new huge stellar catalogues. Using 2MASS catalogue we have discovered over ten new open clusters in the region of Galaxy anticenter and determined…

Astrophysics · Physics 2007-05-23 Sergey Koposov , Elena Glushkova , Ivan Zolotukhin

We report the first search for new star clusters performed using the VISTA near-infrared YJKs Magellanic Clouds survey (VMC) data sets. We chose a pilot field of ~ 0.4 deg^2 located in the South-West of the Small Magelllanic Cloud (SMC)…

We analyse the nature of a sample of stellar overdensities that we found projected on the Carina complex. This study is based on 2MASS photometry and involves the photometry decontamination of field stars, elaboration of intrinsic…

Astrophysics of Galaxies · Physics 2018-02-07 R. A. P. Oliveira , E. Bica , C. Bonatto

We present near-infrared spectroscopic observations of massive stars in three stellar clusters located in the direction of the inner Galaxy. One of them, the Quartet, is a new discovery while the other two were previously reported as…

We report initial results from IRAC observations of four young stellar clusters. These regions are part of a larger Spitzer survey of 31 young stellar groups and clusters within 1 kpc of the Sun. In each of the four clusters, there are…

Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of stellar mass distribution of galaxies within redshift slices…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-03 Z. L. Wen , J. L. Han

Using deep photometric data from WFC@INT and [email protected] we measure the outer number density profiles of 19 stellar clusters located in the inner region of the Milky Way halo (within a Galactocentric distance range of 10-30 kpc) in order to…

Massive galaxy clusters undergo strong evolution from z~1.6 to z~0.5, with overdense environments at high-z characterized by abundant dust-obscured star formation and stellar mass growth which rapidly give way to widespread quenching. Data…

We present results of an infrared study of the molecular cloud Lynds 1340, forming three groups of low and intermediate-mass stars. Our goals are to identify and characterise the young stellar population of the cloud, study the…

Solar and Stellar Astrophysics · Physics 2016-06-09 M. Kun , G. Wolf-Chase , A. Moór , D. Apai , Z. Balog , J. O'Linger-Luscusk , G. Moriarty-Schieven

Embedded clusters are ideal laboratories to understand the early phase of the dynamical evolution of clusters as well as the massive star formation. An interesting observational phenomenon is that some of the embedded clusters show mass…

Solar and Stellar Astrophysics · Physics 2015-06-11 Xinyue Er , Zhibo Jiang , Yanning Fu

In this contribution the ongoing effort to build a statistical sample of clusters of galaxies over a wide range of redshifts to study the evolution of clusters and member galaxies is reviewed. The starting point for this project has been…

We present the results of an infrared photometric survey performed with NICS@TNG in the nearby starburst galaxy NGC 4214. We derived accurate integrated JK magnitudes of 10 young massive clusters and compared them with the already available…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 A. Sollima , R. G. Gratton , E. Carretta , A. Bragaglia , S. Lucatello