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Related papers: Wide Field CCD photometry around nine open cluster…

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We present results from Johnson $UBV$, Kron-Cousins $RI$ and Washington $CT_1T_2$ photometries for seven van den Bergh-Hagen (vdBH) open clusters, namely, vdBH\,1, 10, 31, 72, 87, 92, and 118. The high-quality, multi-band photometric data…

Astrophysics of Galaxies · Physics 2016-09-21 Andrés E. Piatti

We report on deep (V $\approx$ 24.0) $VI$ CCD photometry of 3 fields centered in the regions of the old open clusters Saurer A, B and C. In the case of Saurer A, which is considered one of the oldest known open cluster, we also provide a…

Astrophysics · Physics 2009-11-10 Giovanni Carraro , Gustavo Baume

Open clusters belonging to star-forming complexes are the leftovers from the initial stellar generations. The study of these young systems provides constraints to models of star formation and evolution as well as to the properties of the…

Solar and Stellar Astrophysics · Physics 2015-05-19 F. F. S. Maia , W. J. B. Corradi , J. F. C. Santos

A set of 76 open clusters with abundances based upon DDO photometry and/or moderate dispersion spectroscopy has been transformed to a common [Fe/H] scale and used to study the local structure and evolution of the galactic disk. The…

Astrophysics · Physics 2009-10-30 Bruce A. Twarog , Keith M. Ashman , Barbara J. Anthony-Twarog

We present results of age determination based on the standard procedure of isochrone fitting for about 600 star clusters younger than about 1.2 Gyr from the central parts of the LMC. Comparison of age distributions of star clusters from the…

Astrophysics · Physics 2007-05-23 G. Pietrzynski , A. Udalski

We combine Gaia DR3 5-parameter astrometry with calibrated radial velocities for 23 nearby (<1 kpc) young (<60 Myr) clusters, with membership lists from Cantat-Gaudin et al. (2020). We characterise the plane-of-sky structure of the clusters…

Astrophysics of Galaxies · Physics 2026-04-10 Joseph J. Armstrong , Jonathan C. Tan

Context. Stellar clusters in the Small Magellanic Cloud (SMC) are useful probes for studying the chemical and dynamical evolution of this neighbouring dwarf galaxy, enabling inspection of a large period covering over 10 Gyr. Aims: The main…

Solar and Stellar Astrophysics · Physics 2014-09-17 Bruno Dias , Leandro Kerber , Beatriz Barbuy , Basilio Santiago , Sergio Ortolani , Eduardo Balbinot

We describe a long term project aimed at deriving information on the chemical evolution of the Galactic disk from a large sample of open clusters. The main property of this project is that all clusters are analyzed in a homogeneous way, to…

Astrophysics · Physics 2008-11-26 Angela Bragaglia , Monica Tosi

Surface and spatial radial density profiles in open clusters are derived using a kernel estimator method. Formulae are obtained for the contribution of every star into the spatial density profile. The evaluation of spatial density profiles…

Astrophysics of Galaxies · Physics 2016-01-18 Anton F. Seleznev

The distribution of member stars in the surroundings of an Open Cluster (OC) can shed light on the process of its formation, evolution and dissolution. The analysis of structural parameters of OCs as a function of their age and position in…

Astrophysics of Galaxies · Physics 2022-03-14 Y. Tarricq , C. Soubiran , L. Casamiquela , A. Castro-Ginard , J. Olivares , N. Miret-Roig , P. A. B. Galli

We present the results of BV(RI)_KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster,…

Astrophysics · Physics 2007-05-23 L. P. Bassino , S. Waldhausen , R. E. Martinez

Following deep astrometric and photometric study of the cluster NGC2682 (M67), we are able to accurately determine its fundamental parameters. Being an old and rich cluster, M67 is a relevant object for the analysis of the Galactic disk…

Astrophysics · Physics 2015-05-13 L. Balaguer-Núñez , D. Galadí-Enríquez , C. Jordi

We present BVI CCD photometry of 10 northern open clusters, Berkeley 43, Berkeley 45, Berkeley 47, NGC 6846, Berkeley 49, Berkeley 51, Berkeley 89, Berkeley 91, Tombaugh 4 and Berkeley 9, and estimate their fundamental parameters. Eight of…

Astrophysics of Galaxies · Physics 2015-05-18 Annapurni Subramaniam , Giovanni Carraro , Kenneth A. Janes , ;

Complementing our Washington photometric studies on Galactic open clusters (OCs), we now focus on four poorly studied OCs located in the first and fourth Galactic quadrants, namely BH 84, NGC 5381, BH 211 and Czernik 37. We have obtained…

Solar and Stellar Astrophysics · Physics 2015-06-19 N. Marcionni , J. J. Claria , M. C. Parisi , T. Palma , M. Oddone , A. V. Ahumada

We have used Washington photometry for 90 star cluster candidates of small angular size -typically ~ 11" in radius- distributed within nine selected regions in the inner disc of the Large Magellanic Cloud (LMC) to disentangle whether they…

Astrophysics of Galaxies · Physics 2015-06-19 Andres E. Piatti

In this paper, using 2MASS photometry, we study the structural and dynamical properties of four young star clusters viz. King 16, NGC 1931, NGC 637 and NGC 189. For the clusters King 16, NGC 1931, NGC 637 and NGC 189, we obtain the limiting…

Astrophysics · Physics 2008-12-18 Priya Hasan , S N Hasan , Urmi Shah

We obtained Hubble Space Telescope/Wide Field Camera 3 imaging of a sample of ten of the nearest and brightest nuclear clusters residing in late-type spiral galaxies, in seven bands that span the near-ultraviolet to the near-infrared.…

We present the results of a joint analysis of $Chandra$ X-ray and South Pole Telescope (SPT) SZ observations targeting the first sample of galaxy clusters at $0.3 < z < 1.3$, selected to be the progenitors of well-studied nearby clusters…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-29 F. Ruppin , M. McDonald , L. E. Bleem , S. W. Allen , B. A. Benson , M. Calzadilla , G. Khullar , B. Floyd

We present the $UBVRI$ CCD photometry in the region of the open cluster NGC 2421. Radius of the cluster is determined as $\sim$ 3$^\prime$.0 using stellar density profile. Our Study indicates that metallicity of the cluster is $Z \sim$…

Astrophysics · Physics 2009-11-10 R. K. S. Yadav , Ram Sagar

The poorly studied Berkeley 8 (Be8) open cluster is analysed from CCD UBVRI photometric data taken with the 0.90 m telescope at the Sierra Nevada Observatory. The Z = +0.008 PARSEC isochrone gave us a reddening of E(B-V) = 0.69 +- 0.03, a…

Astrophysics of Galaxies · Physics 2019-08-27 Hikmet Çakmak , Raúl Michel , Yüksel Karataş