Results 31 to 40 of about 514,053 (246)
Multiple Populations in Star Clusters [PDF]
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
A. Milone, A. Marino
semanticscholar +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
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 +23 more
openaire +7 more sources
On the assessment of the nature of open star clusters and the determination of their basic parameters with limited data [PDF]
Astrophysics and Space Science, 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 ...
G. Carraro +3 more
semanticscholar +1 more source
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 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
A Star Catalog for the Open Cluster NGC 188 [PDF]
Publications of the Astronomical Society of the Pacific, 2004 We present new BVRI broad-band photometry for the old open cluster NGC188 based upon analysis of 299 CCD images either obtained by us, donated by colleagues, or retrieved from public archives. We compare our results on a star-by-star basis with data from eleven previous photometric investigations of the cluster.
Stetson, Peter B. +2 more
openaire +5 more sources
Star cluster ecology – V. Dissection of an open star cluster: spectroscopy [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 17 pages, submitted to ...
Steve McMillan +3 more
openaire +4 more sources
Early turbulent mixing as the origin of chemical homogeneity in open star clusters [PDF]
Nature, 2014 The abundances of elements in stars are critical clues to stars’ origins. Observed star-to-star variations in logarithmic abundance within an open star cluster—a gravitationally bound ensemble of stars in the Galactic plane—are typically only about 0.01 ...
Yi Feng, M. Krumholz
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 +3 more
semanticscholar +1 more source