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Related papers: Reconstructing Nearby Young Clusters with Gaia EDR…

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Within the molecular clouds of the Camelopardis OB1 association exists a region previously noted as one subgroup. However, bulk clustering from Gaia astrometry has recently shown three distinctive kinematically coherent groups, all found in…

Astrophysics of Galaxies · Physics 2025-08-14 Joseph Mullen , Amanda Mast , Marina Kounkel , Keivan Stassun , Alexandre Roman-Lopes , Jonathan Tan

Many open clusters listed in modern catalogues were initially reported by visual astronomers as apparent overdensities of bright stars. As observational techniques and analysis methods continue to improve, some of them have been shown to be…

Solar and Stellar Astrophysics · Physics 2020-01-27 T. Cantat-Gaudin , F. Anders

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…

Astrophysics of Galaxies · Physics 2024-07-03 N. Alvarez-Baena , R. Carrera , H. Thompson , L. Balaguer-Nuñez , A. Bragaglia , C. Jordi , E. Silva-Villa , A. Vallenari

This study investigates the open clusters SAI 72 and SAI 75 using Gaia DR3 data, employing the Automated Stellar Cluster Analysis (ASteCA) tool to determine their structural and fundamental properties, including center coordinates, size,…

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

A rare multiple open cluster system has been analyzed using Gaia DR3 astrometry and photometry data. Using Agglomerative Hierarchical clustering and Bayesian-HDBSCAN, we identify a compact core consisting of seven known open clusters and…

Astrophysics of Galaxies · Physics 2026-04-28 Muhammad Akmal Husain , Ferdinand , Mochamad Ikbal Arifyanto , Muhammad Irfan Hakim

The latest Gaia Data Release 3 provides an opportunity to expand the census of Galactic open clusters harboring classical Cepheid variables, thereby bolstering the cosmic distance scale. A comprehensive analysis yielded a total of 50…

Solar and Stellar Astrophysics · Physics 2022-11-30 C. J. Hao , Y. Xu , Z. Y. Wu , Z. H. Lin , S. B. Bian , Y. J. Li , D. J. Liu

The nearby open cluster NGC 752 presents a rare opportunity to study stellar properties at ages >1 Gyr. However, constructing a membership catalog for it is challenging; most surveys have been limited to identifying its giants and dwarf…

Westerlund 1 (Wd 1) is one of the most massive young star clusters in the Milky Way. Although relevant for star formation and evolution, its fundamental parameters are not yet very well constrained. We aim to derive an accurate distance and…

Solar and Stellar Astrophysics · Physics 2022-09-21 Felipe Navarete , Augusto Damineli , Aura E. Ramirez , Danilo F. Rocha , Leonardo A. Almeida

The presence of pre-main-sequence and low-mass stars, combined with the new data from Gaia DR3 and with 2MASS, significantly enhances the relevance of studying this cluster. We aim to accurately identify cluster members, determine…

Solar and Stellar Astrophysics · Physics 2024-09-04 L. M. Pulgar-Escobar , N. A. Henríquez-Salgado , Pierluigi Cerulo , R. E. Mennickent

We use Gaia DR2 to hunt for runaway stars from the Orion Nebula Cluster (ONC). We search a region extending 45{\deg} around the ONC and out to 1 kpc to find sources that overlapped in angular position with the cluster in the last ~10 Myr.…

Astrophysics of Galaxies · Physics 2020-09-02 Juan P. Farias , Jonathan C. Tan , Laurent Eyer

We use several main-sequence models to derive distances (and extinctions), with statistically meaningful uncertainties for 11 star-forming-regions and young clusters. The model dependency is shown to be small, allowing us to adopt the…

Astrophysics · Physics 2009-11-13 N. J. Mayne , Tim Naylor

Context. Near open clusters as Pleiades, Praesepe and Blanco 1 have been extensively studied due to their proximity to the Sun. The Gaia data brings the opportunity to investigate these clusters, since it contains valuable astrometric and…

Astrophysics of Galaxies · Physics 2023-09-27 Jeison Alfonso , Alejandro García-Varela

The Gaia-ESO Survey (GES) observed many open clusters as part of its programme to spectroscopically characterise the various Milky Way populations. GES spectroscopy and Gaia astrometry from its second data release are used here to assign…

The Orion complex is arguably the most studied star-forming region in the Galaxy. While stars are still being born in the Orion nebula, the oldest part was believed to be no more than 13 Myr old. In order to study the full hierarchy of star…

Context: Open clusters (OCs) provide homogeneous samples of white dwarfs (WDs) with known distances, extinctions, and total ages. The unprecedented astrometric precision of \textit{\textit{Gaia}} allows us to identify many novel OC--WD…

Solar and Stellar Astrophysics · Physics 2023-10-04 M. Prišegen , N. Faltová

Young planets (< 1 Gyr) are helpful for studying the physical processes occurring at the early stage of planet evolution. TOI-251 b is a recently discovered sub-Neptune orbiting a young G dwarf, which has an imprecise age estimation of…

Solar and Stellar Astrophysics · Physics 2023-07-26 Qinghui Sun , Sharon Xuesong Wang , Andrew W. Mann , Benjamin M. Tofflemire , Adam L. Kraus , Tianjun Gan , Madyson G. Barber

We present spectroscopic optical and photometric infrared observations of 12 faint candidate members of the young open cluster Alpha Persei found by Prosser (1994). Keck HIRES echelle spectra provide radial and rotational velocity…

Astrophysics · Physics 2009-10-30 Gibor Basri , Eduardo L. Martin

We report the discovery of four new open clusters (named as QC 1, QC 2, QC3 and QC 4) in the direction of Cygnus Cloud and select their members based on five astrometric parameters (l, b, \varpi, \mu^*_{\alpha}, \mu_{\delta}) of Gaia DR2.…

Solar and Stellar Astrophysics · Physics 2021-03-31 Song-mei Qin , Jing Li , Li Chen , Jing Zhong

This study focuses on determining the characteristics of the young open cluster NGC 6383. To achieve this, the HDBSCAN clustering algorithm is utilized to identify potential cluster members based on proper motions and parallaxes from Gaia…

Astrophysics of Galaxies · Physics 2024-10-17 L. M. Pulgar-Escobar , N. A. Henríquez-Salgado

This study presents structural and fundamental astrophysical parameters of poorly studied open cluster NGC 2509. We used the third photometric and astrometric data release of the Gaia (Gaia DR3) to perform analyses. By taking into account…

Astrophysics of Galaxies · Physics 2023-09-12 T. Yontan , S. Koc