Results 21 to 30 of about 344,290 (331)

The Role of Binarity and Stellar Rotation in the Split Main Sequence of NGC 2422

The Astrophysical Journal, 2022
In addition to the extended main-sequence turnoffs widely found in young and intermediate-age (∼600 Myr to 2 Gyr old) star clusters, some younger clusters even exhibit split main sequences (MSs).
Chenyu He, Weijia Sun, Chengyuan Li, Lu Li, Zhengyi Shao, Jing Zhong, Li Chen, Richard de Grijs, Baitian Tang, Songmei Qin, Zara Randriamanakoto   +10 more
doaj   +1 more source

Identifying 46 New Open Cluster Candidates in Gaia EDR3 Using a Hybrid pyUPMASK and Random Forest Method

The Astrophysical Journal Supplement Series, 2023
Open clusters (OCs) are regarded as tracers to understand stellar evolution theory and validate stellar models. In this study, we presented a robust approach to identifying OCs.
Huanbin Chi, Shoulin Wei, Feng Wang, Zhongmu Li   +3 more
doaj   +1 more source

The First Catalog of Candidate White Dwarf–Main-sequence Binaries in Open Star Clusters: A New Window into Common Envelope Evolution [PDF]

Astrophysical Journal
Close binary systems are the progenitors to both Type Ia supernovae and the compact object mergers that can be detected via gravitational waves. To achieve a binary with a small radial separation, it is believed that the system likely undergoes common ...
S. Grondin, M. Drout, Jason Nordhaus, P. Muirhead, J. Speagle 沈, R. Chornock   +5 more
semanticscholar   +1 more source

Galactic kinematics from data on open star clusters from the MWSC catalogue [PDF]

, 2016
Open star clusters from the MWSC (Milky Way Star Clusters) catalogue have been used to determine the Galactic rotation parameters. The circular rotation velocity of the solar neighborhood around the Galactic center has been found from data on more than ...
V. Bobylev, A. Bajkova, K. S. Shirokova, K. S. Shirokova   +3 more
semanticscholar   +1 more source

Modes of Multiple Star Formation [PDF]

, 2001
This paper argues that star forming environments should be classified into finer divisions than the traditional isolated and clustered modes. Using the observed set of galactic open clusters and theoretical considerations regarding cluster formation, we ...
Battinelli P., Bonnell I. A., Elmegreen B. G., Fred C. Adams, Gahm G. F., Hester J. J., Pandey A. K., Philip C. Myers, Price N. M., Retterer J. M., Roberts M., Sterzik M. F., Strom K. E., Testi L.   +13 more
core   +3 more sources

Do open star clusters evolve towards energy equipartition [PDF]

, 2016
We investigate whether open clusters (OCs) tend to energy equipartition, by means of direct N-body simulations with a broken power-law mass function. We nd that the simulated OCs become strongly mass segregated, but the local velocity dispersion does not
M. Spera, M. Mapelli, R. Jeffries
semanticscholar   +1 more source

Massive open star clusters using the VVV survey - V. Young clusters with an OB stellar population [PDF]

, 2016
The ESO public survey VISTA Variables in the Via Lactea (VVV) has contributed with deep multi-epoch photometry of the Galactic bulge and the adjacent part of the disk over 526 square degrees.
S. R. Alegr'ia, J. Borissova, A. Chen'e, C. Bonatto, R. Kurtev, P. Amigo, M. Kuhn, M. Gromadzki, J. A. D. O. Astrophysics, Santiago, Chile., I. D. Astronom'ia, U. Valpara'iso, G. Observatory, Hilo, Hi, Universidade Federal do Rio Grande do Sul, D. D. Astronomia, P. Alegre, Brazil.   +19 more
semanticscholar   +1 more source

Star clusters in the Sh2-132 complex: clues about the connection between embedded and open clusters [PDF]

, 2010
Embedded clusters are formed in molecular clouds where massive stars can produce HII regions. The detailed embedded-open cluster evolutionary connection as well as the origin of associations are yet to be unveiled.
Abt, Bastian, Battinelli, Bessel, Bica, Bonatto, Bonatto, Bonatto, Bonatto, Bonatto, C. Bonatto, Cappa, Carvalho, Converse, De Wit, De Wit, Dutra, E. Bica, Elmegreen, Elson, Fellhauer, Foster, Furlan, Goodwin, Gvaramadze, Hamann, Harten, King, Kronberger, Lada, Luhman, Luhman, Lynds, Marigo, Meyer, Moeckel, Momany, Parker, Pflamm-Altenburg, Platais, Puga, Schlegel, Sharpless, Siess, Smith, T. A. Saurin, Tutukov, Van Der Hucht, Wilson, Yilmaz   +49 more
core   +2 more sources

Massive White Dwarfs in Young Star Clusters [PDF]

Astrophysical Journal, 2021
We have carried out a search for massive white dwarfs (WDs) in the direction of young open star clusters using the Gaia DR2 database. The aim of this survey was (1) to provide robust data for new and previously known high-mass WDs regarding cluster ...
H. Richer, I. Caiazzo, Helen Du, S. Grondin, James Hegarty, J. Heyl, R. Kerr, David R. Miller, S. Thiele   +8 more
semanticscholar   +1 more source

Automated search for galactic star clusters in large multiband surveys: I. Discovery of 15 new open clusters in the Galactic anticenter region [PDF]

, 2008
Aims: According to some estimations, there are as many as 100000 open clusters in the Galaxy, but less than 2000 of them have been discovered, measured, and cataloged. We plan to undertake data mining of multiwavelength surveys to find new star clusters.
Bhatt, Bica, Bica, Borissova, Cardelli, Carraro, Christian, Christian, Ciardullo, Dias, Drake, Dutra, Dutra, E. V. Glushkova, Froebrich, Girardi, Girardi, I. Yu. Zolotukhin, Ivanov, Koposov, Koposov, Koposov, Kronberger, Lata, Lindenberg, Loktin, S. E. Koposov, Skrutskie, Vallenari   +28 more
core   +3 more sources