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Deep and extensive CCD photometric observations $UBV(RI)_{C}H_{\alpha}$ were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to $M_{V} \approx +4.5$, revealing that stars…

天体物理学 · 物理学 2011-05-23 Gustavo Baume , Ruben Vazquez , Giovanni Carraro , Alejandro Feinstein

Discerning the nature of open cluster candidates is essential for both individual and statistical analyses of cluster properties. Here we establish the nature of thirteen cluster candidates from the FSR cluster list using photometry from…

星系天体物理 · 物理学 2016-11-14 A. S. M. Buckner , D. Froebrich

We investigate the relationship between the global properties of star clusters and their double black hole (DBH) populations. We use the code {\tt NBODY6} to evolve a suite of star cluster models with an initial mass of…

星系天体物理 · 物理学 2022-05-02 Debatri Chattopadhyay , Jarrod Hurley , Simon Stevenson , Arihant Raidani

This paper investigates the dynamical evolution of embedded stellar clusters from the protocluster stage, through the embedded star-forming phase, and out to ages of 10 Myr -- after the gas has been removed from the cluster. The relevant…

太阳与恒星天体物理 · 物理学 2014-11-20 Eva-Marie Proszkow , Fred C. Adams

Context: Open clusters' dynamical evolution is driven by stellar evolution, internal dynamics and external forces, which according to dynamical simulations, will evaporate them in a timescale of about 1 Ga. However, about 10\% of the known…

The photometric characterization of M33 star clusters is far from complete. In this paper, we present homogeneous $UBVRI$ photometry of 708 star clusters and cluster candidates in M33 based on archival images from the Local Group Galaxies…

星系天体物理 · 物理学 2015-06-18 Zhou Fan , Richard de Grijs

We present and discuss photometric optical data in the area of the OB association Sco OB1 covering about 1 squared degree. UBVI photometry is employed in tandem with Gaia DR2 data to investigate the 3 dimensional structure and the star…

星系天体物理 · 物理学 2020-05-06 L. Yalyalieva , G. Carraro , R. Vazquez , L. Rizzo , E. Glushkova , E. Costa

Earlier measurements of the masses and radii of the detached eclipsing binary V20 in the open cluster NGC 6791 were accurate enough to demonstrate that there are significant differences between current stellar models. Here we improve on…

太阳与恒星天体物理 · 物理学 2015-05-20 K. Brogaard , H. Bruntt , F. Grundahl , J. V. Clausen , S. Frandsen , D. A. VandenBerg , L. R. Bedin

We examine the spatial distribution of star clusters in NGC 628 using the statistical tool INDICATE to quantify clustering tendencies. Our sample, based on HST and JWST observations, is the most complete to date, spanning ages from 1 Myr to…

We investigate the nature of 4 young and low-mass open clusters (OCs) located in the $2^{nd}$ and $3^{rd}$ quadrants with near-IR 2MASS photometry (errors $<0.1$ mag). After field decontamination, the colour-magnitude diagrams (CMDs)…

星系天体物理 · 物理学 2015-05-13 Charles Bonatto , Eduardo Bica

To enlarge our growing sample of well-studied star clusters in the Large Magellanic Cloud (LMC), we present CCD Washington CT1 photometry to T1 ~ 23 in the fields of twenty-three mostly unstudied clusters located in the inner disc and outer…

星系天体物理 · 物理学 2015-06-16 Tali Palma , Juan J. Clariá , Doug Geisler , Andrés E. Piatti , Andrea V. Ahumada

Context: The ESO Public Survey "VISTA Variables in the V\'ia L\'actea" (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Aims: The VVV…

We present a new, BVIc photometric survey of the young open cluster IC4665, which improves on previous studies of this young cluster by incorporating a rigorous standardization procedure, thus providing high-fidelity colors and magnitudes…

太阳与恒星天体物理 · 物理学 2015-05-19 Phillip A. Cargile , David J. James

In this paper, we present our results for the photometric and kinematical studies of old open cluster NGC 188. We determined various astrophysical parameters like limited radius, core and tidal radii, distance, luminosity and mass…

太阳与恒星天体物理 · 物理学 2016-06-22 W. H. Elsanhoury , A. A. Haroon , N. V. Chupina , S. V. Vereshchagin , Devesh P. Sariya , R. K. S. Yadav , Ing-Guey Jiang

We present combined optical/near-IR photometry (BVIK) for six open clusters - M35, M37, NGC 1817, NGC 2477, NGC 2420, and M67. The open clusters span an age range from 150 Myr to 4 Gyr and have metal abundances from [Fe/H] = -0.3 to +0.09…

天体物理学 · 物理学 2009-11-10 Aaron J. Grocholski , Ata Sarajedini

We present a robust methodology for identifying photometric binaries in star clusters. Using Gaia DR3, Pan-STARRS and 2MASS data, we self-consistently define the cluster parameters and binary demographics for the open clusters (OCs) NGC…

太阳与恒星天体物理 · 物理学 2023-12-22 Anna C. Childs , Aaron M. Geller , Ted von Hippel , Erin Motherway , Claire Zwicker

We have obtained CCD UBVI_{KC} photometry down to V ~ 21.0 for the open clusters Berkeley 26, Czernik 27, Melotte 72, NGC 2479 and BH 37. The latter has never been studied before. Cluster stellar density profiles were obtained from star…

星系天体物理 · 物理学 2015-05-14 Andres E. Piatti , Juan J. Claria , Andrea V. Ahumada

In a sample of six young open clusters we investigated 1753 objects using the narrow band, three filter Delta a photometric system resulting in the detection of eleven bona-fide magnetic chemically peculiar (CP) stars and five Be or…

天体物理学 · 物理学 2009-11-11 E. Paunzen , M. Netopil , I. Kh. Iliev , H. M. Maitzen , A. Claret , O. I. Pintado

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…

星系天体物理 · 物理学 2014-11-20 S. Bilir , T. Guver , I. Khamitov , T. Ak , S. Ak , K. B. Coskunoglu , E. Paunzen , E. Yaz

Relying on U,B imagery at the Italian Telescopio Nazionale Galileo (TNG), we report here the discovery of a sample of 13 new UV-bright post-HB candidate stars in the field of the galactic open cluster NGC 6791. Owing to its super-solar…

天体物理学 · 物理学 2016-08-30 L. M. Buson , E. Bertone , A. Buzzoni , G. Carraro