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We present deep wide-field optical CCD photometry and mid-infrared Spitzer/IRAC and MIPS 24micron data for about 100,000 stars in the young open cluster IC 1805. The members of IC 1805 were selected from their location in the various…

Solar and Stellar Astrophysics · Physics 2020-12-09 Hwankyung Sung , Michael S. Bessell , Moo-Young Chun , Jonghyuk Yi , Y. Naze , Beomdu Lim , R. Karimov , G. Rauw , Byeong-Gon Park , Hyeonoh Hur

This study comprehensively analyzes three open star clusters: SAI 16, SAI 81, and SAI 86 using Gaia DR3 data. Based on the ASteCA code, we determined the most probable star candidates (P >= 50%) and estimated the number of star members of…

Astrophysics of Galaxies · Physics 2025-04-23 Anwar Yousef Alzahrani , Aly Haroon , Waleed Elsanhoury , Deniz Cennet Çınar

We investigate the distribution of Blue Straggler stars in the field of three open star clusters. The main purpose is to highlight the crucial role played by general Galactic disk fore-/back-ground field stars, which are often located in…

Astrophysics · Physics 2009-11-13 G. Carraro , R. A. Vazquez , A. Moitinho

We report the discovery of 31 new open clusters (OCs) identified in \textit{Gaia}~DR3 data through a systematic search over 220 adjacent $1^\circ\times1^\circ$ fields towards the Galactic anticentre, in the direction of the Perseus arm gap.…

Astrophysics of Galaxies · Physics 2026-03-30 F. A. Ferreira , M. S. Angelo , J. F. C. Santos , W. J. B. Corradi , F. F. S. Maia

This paper presents an investigation on the four open clusters Czernik 14, Haffner 14, Haffner 17 and King 10 located near the Perseus arm of Milky Way Galaxy using Gaia DR2, 2MASS, WISE, APASS and Pan-STARRS1 data sets. We find normal…

Astrophysics of Galaxies · Physics 2020-05-06 D. Bisht , Qingfeng Zhu , R. K. S. Yadav , Alok Durgapal , Geeta Rangwal

The improvements in the precision of the published data in \textit{Gaia} EDR3 with respect to \textit{Gaia} DR2, particularly for parallaxes and proper motions, offer the opportunity to increase the number of known open clusters in the…

Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies. The second Gaia data release contains precise astrometry at the sub-milliarcsecond level and…

Globular clusters (GCs) are the most ancient stellar systems in the Milky Way. Therefore, they play a key role in the understanding of the early chemical and dynamical evolution of our Galaxy. Around $40\%$ of them are placed within $\sim4$…

Astrophysics of Galaxies · Physics 2020-01-08 Angeles Pérez-Villegas , Beatriz Barbuy , Leandro Kerber , Sergio Ortolani , Stefano O. Souza , Eduardo Bica

We present the results of a systematic Milky Way satellite search performed across an array of publicly available wide-area photometric surveys. Our aim is to complement previous searches by widening the parameter space covered.…

Astrophysics of Galaxies · Physics 2019-01-28 G. Torrealba , V. Belokurov , S. E. Koposov

We have used deep ACS/WFC images of M33 to check nature of extended objects detected by the ground based survey of Zloczewski et al. (2008). A total of 24 candidates turned out to be genuine compact stellar clusters. In addition we detected…

Solar and Stellar Astrophysics · Physics 2009-03-24 K. Zloczewski , J. Kaluzny

We carried out UBVRcIc photometric study of three poorly studied young open clusters IC 1442, King 21, and Trumpler 7 (Tr 7). We obtained 263, 244, and 128 member stars using Gaia DR2 proper motions and parallaxes in IC 1442, King 21, and…

Solar and Stellar Astrophysics · Physics 2020-05-27 Jayanand Maurya , Y. C. Joshi , A. S. Gour

Aims.We study the photometric and structural properties of the star cluster system in the late type Sc spiral NGC 3370. Methods. BVI observations from the Advanced Camera for Surveys on board of HST are used to analyse in detail the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Michele Cantiello , Enzo Brocato , John P. Blakeslee

An important aspect in the evolutionary scenario of cool stars is their rotation and the rotationally induced magnetic activity and interior mixing. Stars in open clusters are particularly useful tracers for these aspects because of their…

Solar and Stellar Astrophysics · Physics 2015-08-05 Klaus G. Strassmeier , Joerg Weingrill , Thomas Granzer , Gabriel Bihain , Michael Weber , Sydney A. Barnes

We present high-precision VI photometry of stars from the middle of the giant branch to about 5 magnitudes below the main-sequence turnoff in the globular cluster Palomar 13 based on images obtained with the Keck II 10m telescope. We…

Astrophysics · Physics 2009-11-10 L. Lee Clark , Eric L. Sandquist , Michael Bolte

This paper is part of a series devoted to the study of the stellar populations in brightest cluster galaxies (BCGs), aimed at setting constraints on the formation and evolution of these objects. We have obtained high signal-to-noise ratio,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 S. I. Loubser , P. Sanchez-Blazquez , A. E. Sansom , I. K. Soechting

This study explores the density profile of the stellar disk, radially and azimuthally, based on approximately 8.4 million red clump stars selected from Gaia Bp/Rp spectra. After correcting for selection effects and distance uncertainties,…

We present an analysis of the radial dependence of the stellar mass function in the diffuse outer-halo globular cluster Palomar 14. Using archival HST/WFPC2 data of the cluster's central 39 pc (corresponding to ~0.85*r_h) we find that the…

Astrophysics of Galaxies · Physics 2013-01-23 Matthias J. Frank , Eva K. Grebel , Andreas H. W. Küpper

We used deep wide-field observations obtained with the Canada-France-Hawaii Telescope to study the blue straggler star (BSS) population in the innermost five arcminutes of the remote Galactic globular cluster Palomar 14. The BSS radial…

Reliable fundamental parameters of open clusters such as distance, age and extinction are key to our understanding of Galactic structure and stellar evolution. In this work we use {\it Gaia} DR2 to investigate 45 open clusters listed in the…

Solar and Stellar Astrophysics · Physics 2020-10-07 H. Monteiro , W. S. Dias , A. Moitinho , T. Cantat-Gaudin , J. R. D. Lépine , G. , Carraro , E. Paunzen

Pismis 18 is a moderately populated, intermediate-age open cluster located within the solar circle at a Galactocentric distance of about 7 kpc. Few open clusters have been studied in detail in the inner disc region before the Gaia-ESO…

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