Results 21 to 30 of about 259,126 (328)
Star cluster ecology – V. Dissection of an open star cluster: spectroscopy [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 17 pages, submitted to ...
Portegies Zwart, S.F. +3 more
openaire +4 more sources
THE SPATIAL DISTRIBUTION OF STARS IN OPEN CLUSTERS [PDF]
The Astrophysical Journal, 2009 AbstractWe study the internal spatial structure of 16 open clusters in the Milky Way spanning a wide range of ages. For this, we use the minimum-spanning-tree method (the Q parameter, which enables one to classify the stellar distribution as either radially or fractally clustered), King-profile fitting, and the correlation dimension (Dc) for those ...
Sanchez, Nestor, Alfaro, Emilio J.
openaire +4 more sources
The spin, expansion, and contraction of open star clusters [PDF]
Astronomy & AstrophysicsContext. Empirical constraints on the internal dynamics of open clusters are important for understanding their evolution and evaporation. High-precision astrometry from Gaia DR3 is thus useful to observe aspects of the cluster dynamics. Aims. This work aims to identify dynamically peculiar clusters such as spinning and expanding clusters.
Vikrant V. Jadhav +4 more
openalex +3 more sources
Be STARS IN THE OPEN CLUSTER NGC 6830 [PDF]
The Astronomical Journal, 2016 ABSTRACT We report the discovery of two new Be stars, and re-identify one known Be star in the open cluster NGC 6830. Eleven Hα emitters were discovered using the Hα imaging photometry of the Palomar Transient Factory Survey. Stellar membership of the candidates was verified with photometric and kinematic information using 2MASS data and
Po-Chieh Yu(俞伯傑) +20 more
openaire +4 more sources
An Investigation of Open Clusters Berkeley 68 and Stock 20 Using CCD UBV and Gaia DR3 Data
The Astronomical Journal, 2023 We performed detailed photometric and astrometric analyses of the open star clusters Berkeley 68 and Stock 20. This was based on ground-based CCD UBV photometric data complemented by space-based Gaia Data Release 3 (DR3) photometry and astrometry.
Talar Yontan
doaj +1 more source
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 +10 more
doaj +1 more source
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 +3 more
doaj +1 more source
On the assessment of the nature of open star clusters and the determination of their basic parameters with limited data [PDF]
, 2017 Our knowledge of stellar evolution and of the structure and chemical evolution of the Galactic disk largely builds on the study of open star clusters. Because of their crucial role in these relevant topics, large homogeneous catalogues of open cluster ...
Baume, G. +3 more
core +3 more sources
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. +13 more
core +3 more sources
The embedded cluster or association Trumpler 37 in IC1396: a search for evolutionary constraints [PDF]
, 2012 It is currently widely accepted that open star clusters and stellar associations result from the evolution of embedded star clusters. Parameters such star formation efficiency, time-scale of gas removal and velocity dispersion can be determinants of ...
Bica, E., Bonatto, C., Saurin, T. A.
core +2 more sources