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Related papers: Intermediate age open clusters: Collinder 110

200 papers

We present CCD BVI photometry of the old open cluster Berkeley 21, one of the most distant clusters in the Galactic anticentre direction, and possibly the lowest metallicity object in the open clusters sample. Its position and metal…

Astrophysics · Physics 2009-10-30 M. Tosi , L. Pulone , G. Marconi , A. Bragaglia

We present a detailed photometric and kinematical analysis of poorly studied open cluster IC 1434 using CCD VRI, APASS, and Gaia DR2 database for the first time. BY determining the membership probability of stars, we identified the 238 most…

Solar and Stellar Astrophysics · Physics 2021-09-29 Y. H. M. Hendy , D. Bisht

The fundamental parameters of reddening, metallicity, age, and distance are presented for the poorly studied open clusters Be~89, Ru~135, and Be~10, derived from their CCD UBVRI photometry. By fitting the appropriate isochrones to the…

We present the results of combined optical and near-infrared photometry for the globular cluster systems of the giant ellipticals IC 4051 and NGC 3311. We use the reduced age-metallicity degeneracy in (V-I) vs.(V-H) color-color diagrams to…

Astrophysics · Physics 2009-11-11 M. Hempel , D. Geisler , D. W. Hoard , W. E. Harris

We present UBV CCD observations obtained in the field of the northern open cluster NGC 1220, for which little information is available. We provide also BV CCD photometry of a field 5$^{\prime}$ northward of NGC 1220 to take into account…

Astrophysics · Physics 2009-11-07 S. Ortolani , G. Carraro , S. Covino , E. Bica , B. Barbuy

We derive astrophysical parameters of the open cluster NGC 1513 by means of colour indices built with new $CCD\,UBV(RI)_{KC}$ photometry. Based on early-type members, the mean foreground reddening and total to selective extinction ratio are…

Astrophysics of Galaxies · Physics 2024-05-17 İnci Akkaya Oralhan , Hikmet Çakmak , Yüksel Karataş , Raúl Michel , Charles Bonatto

To study the crucial range of Galactocentric distances between 12 and 16 kpc, where little information is available, we have obtained VI CCD imaging of Berkeley 20 and BVI CCD imaging of Berkeley 66 and Tombaugh 2, three distant, old open…

Astrophysics of Galaxies · Physics 2015-05-20 Gloria Andreuzzi , Angela Bragaglia , Monica Tosi , Gianni Marconi

We present accurate integrated-light photometry in Johnson/Cousins V, R, and I for a sample of 28 globular clusters in the Magellanic Clouds. The majority of the clusters in our sample have reliable age and metallicity estimates available…

Astrophysics · Physics 2009-11-11 Paul Goudfrooij , Diane Gilmore , Markus Kissler-Patig , Claudia Maraston

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

To progress in galactic studies based on open clusters, e.g. cluster formation rate or kinematical properties, one needs to improve the number of open clusters observed. However, only half of the 1700 known galactic open clusters have been…

Astrophysics · Physics 2009-11-11 M. Netopil , H. M. Maitzen , E. Paunzen , A. Claret

CCD photometry of the intermediate-age open cluster, IC 4651, on the uvbyHbeta system is presented and analyzed. By using a combination of the information from the color-magnitude diagram (CMD) and the color-color diagrams, a sample of 98…

Astrophysics · Physics 2009-10-31 B. J. Anthony-Twarog , B. A. Twarog

We present CCD BV and JHK$_{s}$ 2MASS photometric data for the open cluster NGC 1513. We observed 609 stars in the direction of the cluster up to a limiting magnitude of $V\sim19$ mag. The star count method shows that the centre of the…

Astrophysics of Galaxies · Physics 2014-11-20 S. Bilir , T. Guver , I. Khamitov , T. Ak , S. Ak , K. B. Coskunoglu , E. Paunzen , E. Yaz

The CCD UBV(RI)KC photometry of the poorly studied open clusters Juchert 9 (Juc 9) and Berkeley 97 (Be 97), which are observed with the 0.84 m telescope at the San Pedro M\'artir National Observatory, M\'exico has been analysed. For the…

Astrophysics of Galaxies · Physics 2019-12-02 İnci Akkaya Oralhan , Raúl Michel , Yonca Karslı , Hikmet Çakmak , Hwankyung Sung , Yüksel Karataş

We have initiated a long-term project, the BOAO photometric survey of open clusters, to enlarge our understanding of galactic structure using UBVI CCD photometry of open clusters which have been little studied before. This is the second…

Astrophysics · Physics 2009-11-07 H. B. Ann , S. H. Lee , H. Sung , M. G. Lee , S. -L. Kim , M. -Y. Chun , Y. -B. Jeon , B. -G. Park , I. -S. Yuk

We present deep CCD photometry of the globular cluster M13 (NGC 6205) in the Stromgren uvby-Beta system, and determine a foreground reddening of E(b-y)= 0.015mag. From a fit to the main-sequence of metal-poor subdwarfs with Hipparcos…

Astrophysics · Physics 2009-10-30 Frank Grundahl , Don A. VandenBerg , Michael I. Andersen

As part of a long term programme, we analyse the evolutionary status and properties of the old and populous open cluster Trumpler 5 (Tr 5), located in the Galactic anticentre direction, almost on the Galactic plane. Tr 5 was observed with…

Solar and Stellar Astrophysics · Physics 2015-06-23 P. Donati , G. Cocozza , A. Bragaglia , E. Pancino , T. Cantat-Gaudin , R. Carrera , M. Tosi

We present CMDs in the V and I bands for fifteen star clusters in the Small Magellanic Cloud (SMC) based on data taken with the Very Large Telescope (VLT, Chile). We selected these clusters from our previous work, wherein we derived cluster…

Solar and Stellar Astrophysics · Physics 2014-03-05 M. C. Parisi , D. Geisler , G. Carraro , J. J. Clariá , E. Costa , A. J. Grocholski , A. Sarajedini , R. Leiton , A. E. Piatti

NGC 5822 is a richly populated, moderately nearby, intermediate-age open cluster covering an area larger than the full moon on the sky. A CCD survey of the cluster on the UBVI and uvbyCaHbeta systems shows that the cluster is superposed…

Solar and Stellar Astrophysics · Physics 2015-05-30 Giovanni Carraro , Barbara J. Anthony-Twarog , Edgardo Costa , Bryce J. Jones , Bruce A. Twarog

We present BV CCD-data for 11 intermediate-age LMC clusters; the main conclusions are: 1. in the (V_to, V_cl,m) and (V-to, (V_to-V_cl,m)) planes the models yield a good overall description of the data; 2. with the current sample, it is…

Astrophysics · Physics 2019-08-17 C. E. Corsi , R. Buonanno , F. Fusi Pecci , F. R. Ferraro , V. Testa , L. Greggio

The Magellanic Clouds (MCs) present a rich system of stellar clusters that can be used to probe the dynamical and chemical evolution of these neighboring and interacting irregular galaxies. In particular, these stellar clusters (SCs)…