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Membership of stars in open clusters is one of the most crucial parameters in studies of star clusters. Gaia opened a new window in the estimation of membership because of its unprecedented 6-D data. In the present study, we used published…

Solar and Stellar Astrophysics · Physics 2021-07-28 Md Mahmudunnobe , Priya Hasan , Mudasir Raja , S N Hasan

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…

We present a comprehensive kinematic analysis of the solar neighborhood (d < 50 pc) using high-precision astrometric data from the third Gaia Data Release (DR3). By leveraging the full six dimensional phase space information (positions and…

General Physics · Physics 2025-12-18 Anmay Raj

We investigate the distribution of different classes of spectroscopically identified sources and theoretical models in the color-color diagrams (CCDs) combining the near-infrared (NIR) and mid-infrared (MIR) data to develop a method to…

Solar and Stellar Astrophysics · Physics 2016-08-24 Ryszard Szczerba , Natasza Siódmiak , Aleksandra Leśniewska , Agata Karska , Marta Sewiło

The large astrometric and photometric survey performed by the Gaia mission allows for a panoptic view of the Galactic disc and in its stellar cluster population. Hundreds of clusters were only discovered after the latest G data release…

Studying open clusters (OCs) is essential for a comprehensive understanding of the structure and evolution of the Milky Way. Many previous studies have systematically searched for OCs near the solar system within 1.2 kpc or 20 degrees of…

Astrophysics of Galaxies · Physics 2023-06-14 Huanbin Chi , Feng Wang , Wenting Wang , Hui Deng , Zhongmu Li

Context. Open clusters that emerged from the star forming regions as gravitationally bound structures are subjected to star evaporation, ejection, and tidal forces throughout the rest of their lives. Consequently they form tidal tails that…

Astrophysics of Galaxies · Physics 2024-10-30 Janez Kos

Identifying the young optically visible population in a star-forming region is essential for fully understanding the star formation event. In this paper, We identify 211 candidate members of the Perseus molecular cloud based on Gaia…

Astrophysics of Galaxies · Physics 2022-09-07 Xiao-Long Wang , Min Fang , Yu Gao , Hong-Xin Zhang , Gregory J. Herczeg , Hong-Jun Ma , En Chen , Xing-Yu Zhou

Open clusters have long been used to gain insights into the structure, composition, and evolution of the Galaxy. With the large amount of stellar data available for many clusters in the Gaia era, new techniques must be developed for…

Solar and Stellar Astrophysics · Physics 2018-07-25 Steffi X. Yen , Sabine Reffert , Elena Schilbach , Siegfried Röser , Nina V. Kharchenko , Anatoly E. Piskunov

We report the discovery of 25 new open clusters resulting from a search in dense low galactic latitude fields. We also provide, for the first time, structural and astrophysical parameters for the new findings and 34 other recently…

Solar and Stellar Astrophysics · Physics 2020-06-24 Filipe A. Ferreira , J. F. C. Santos , W. J. B. Corradi , F. F. S. Maia , M. S. Angelo

We present the analysis of a local (z = 0.04 - 0.2) sample of 31 galaxy clusters with the aim of measuring the density of the X-ray emitting gas in cluster outskirts. We compare our results with numerical simulations to set constraints on…

Cosmology and Nongalactic Astrophysics · Physics 2015-10-08 D. Eckert , F. Vazza , S. Ettori , S. Molendi , D. Nagai , E. T. Lau , M. Roncarelli , M. Rossetti , S. L. Snowden , F. Gastaldello

The particularly abundant presence of blue straggler stars (BSS) in Galactic open clusters offers favorable conditions for detailed studies on the statistical properties and the origin of the blue straggler population. With the help of Gaia…

Astrophysics of Galaxies · Physics 2023-04-12 Chunyan Li , Jing Zhong , Songmei Qin , Li Chen

(abridged) NGC6530 is a young cluster with a complex morphology and star-formation history. We present a statistical study of its global properties using a new large list of candidate members down to masses of 0.2-0.4 Msun and Gaia DR2…

Solar and Stellar Astrophysics · Physics 2019-02-27 F. Damiani , L. Prisinzano , G. Micela , S. Sciortino

We present a Large Binocular Telescope (LBT) imaging study that characterizes the star cluster component of nearby galaxy outer disks (beyond the optical radius R_25). Expanding on the pilot project of Herbert-Fort et al. (2009), we present…

The caustic technique measures the mass of galaxy clusters in both their virial and infall regions and, as a byproduct, yields the list of cluster galaxy members. Here we use 100 galaxy clusters with mass M200>=1E14 Msun/h extracted from a…

Cosmology and Nongalactic Astrophysics · Physics 2013-06-12 Ana Laura Serra , Antonaldo Diaferio

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…

The Galactic globular cluster system is incomplete, especially in the low latitude regions of the Galactic bulge and disk. We report the physical characterization of twelve star clusters in the Milky Way, most of which are explored here for…

Stars in open clusters are powerful probes of the intervening Galactic magnetic field, via background starlight polarimetry, because they provide constraints on the magnetic field distances. We use 2MASS photometric data for a sample of 31…

Solar and Stellar Astrophysics · Physics 2015-10-14 Sadia Hoq , Dan Clemens

CONTEXT. This is the second paper of a series on Galactic OB groups that uses astrometric and photometric data from Gaia and spectral classifications from GOSSS and LiLiMaRlin. The previous paper was based on Gaia DR2, this is based on Gaia…

Monoceros R2 (Mon R2) is one of the closest large active star-forming regions. This extremely young and partially embedded region provides an excellent laboratory for studying star formation and the early evolution of young stellar objects…

Solar and Stellar Astrophysics · Physics 2024-03-07 Sally D. Jiang , Lynne A. Hillenbrand