scholarly journals Period–luminosity relations of fast-rotating B-type stars in the young open cluster NGC 3766

2017 ◽  
Vol 467 (4) ◽  
pp. 3864-3873 ◽  
Author(s):  
H. Saio ◽  
S. Ekström ◽  
N. Mowlavi ◽  
C. Georgy ◽  
S. Saesen ◽  
...  
Keyword(s):  
Open Cluster ◽  
Young Open Cluster ◽  
Fast Rotating

NGC 6124: a young open cluster with anomalous- and fast-rotating giant stars

2021 ◽  
Author(s):  
N Holanda ◽  
N Drake ◽  
W J B Corradi ◽  
F A Ferreira ◽  
F Maia ◽  
...  
Keyword(s):  
Isotopic Ratio ◽  
Rotational Velocity ◽  
Open Cluster ◽  
Chemical Species ◽  
Stellar Atmospheres ◽  
Lithium Abundance ◽  
Giant Stars ◽  
Analysis Technique ◽  
Young Open Cluster ◽  
Fast Rotating

Abstract We present the results of a chemical analysis of fast and anomalous rotator giants members of the young open cluster NGC 6124. For this purpose, we carried out abundances of the mixing sensitive species such as Li, C, N, Na and 12C/13C isotopic ratio, as well as other chemical species for a sample of four giants among the seven observed ones. This study is based on standard spectral analysis technique using high-resolution spectroscopic data. We also performed an investigation of the rotational velocity (v sin  i) once this sample exhibit abnormal values – giant stars commonly present rotational velocities of few km s−1. In parallel, we have been performed a membership study, making use of the third data release from ESA Gaia mission. Based on these data, we estimated a distance of d = 630 pc and an age of 178 Myr through isochrone fitting. After that procedure, we matched all the information raised and investigated the evolutionary stages and thermohaline mixing model through of spectroscopic Teff and log  g and mixing tracers, as 12C/13C and Na, of the studied stars. We derived a low mean metallicity of [Fe/H] = −0.13 ±0.05 and a modest enhancement of the elements created by the s-process such as Y, Zr, La, Ce, and Nd, which is in agreement of what has already been reported in the literature for young clusters. The giants analyzed have homogeneous abundances, except for lithium abundance [log  ε(Li)NLTE = 1.08±0.42] and this may be associated to a combination of mechanisms that act increasing or decreasing lithium abundances in stellar atmospheres.

scholarly journals [ITAL]UBVRI[/ITAL] and Hα Photometry of the Young Open Cluster NGC 6530

2000 ◽  
Vol 120 (1) ◽  
pp. 333-348 ◽  
Author(s):  
Hwankyung Sung ◽  
Moo-Young Chun ◽  
Michael S. Bessell
Keyword(s):  
Open Cluster ◽  
Young Open Cluster

scholarly journals ASPITZERVIEW OF THE YOUNG OPEN CLUSTER NGC 2264

2009 ◽  
Vol 138 (4) ◽  
pp. 1116-1136 ◽  
Author(s):  
Hwankyung Sung ◽  
John R. Stauffer ◽  
Michael S. Bessell
Keyword(s):  
Open Cluster ◽  
Young Open Cluster

scholarly journals CHARACTERIZATION OF THE YOUNG OPEN CLUSTER G144.9+0.4 IN THE CAMELOPARDALIS OB1 ASSOCIATION

2013 ◽  
Vol 775 (2) ◽  
pp. 123
Author(s):  
Chien-Cheng Lin ◽  
W. P. Chen ◽  
Neelam Panwar
Keyword(s):  
Open Cluster ◽  
Young Open Cluster

scholarly journals The young open cluster Trumpler 3

2010 ◽  
Vol 331 (3) ◽  
pp. 312-322
Author(s):  
G. Maciejewski ◽  
L. Bukowiecki
Keyword(s):  
Open Cluster ◽  
Young Open Cluster

scholarly journals Defining the Binary Star Population in the Young Open Cluster M35 (NGC 2168)

2007 ◽  
Vol 3 (S246) ◽  
pp. 105-106
Author(s):  
Ella K. Braden ◽  
Robert D. Mathieu ◽  
Sören Meibom
Keyword(s):  
Binary Systems ◽  
Initial Conditions ◽  
Binary Star ◽  
Open Cluster ◽  
Open Clusters ◽  
Spatial Period ◽  
Large Sample Size ◽  
Long Baseline ◽  
Dynamical Simulations ◽  
Young Open Cluster

AbstractWe present current results from the ongoing WIYN Open Cluster Study radial-velocity survey for 1410 stars in the young (150 Myr) open cluster M35 (NGC 2168) and establish a benchmark for initial conditions in young open clusters. We find for periods ≲ 1000 days a minimum binary frequency of 0.36 – 0.51. We also analyze the spatial, period and eccentricity distributions of the binary systems and find that the period and eccentricity distributions are well approximated by scaled field distributions from Duquennoy & Mayor (1991). With our large sample size and long baseline, we have a unique understanding of the binary population in this young cluster, making it ideal for defining initial conditions for dynamical simulations.

scholarly journals NGC 1893: a young open cluster rich in multitype variable stars

2018 ◽  
Vol 482 (1) ◽  
pp. 658-697
Author(s):  
Hui-Fang Xue ◽  
Jian-Ning Fu ◽  
Nami Mowlavi ◽  
Sophie Saesen ◽  
Fabio Barblan ◽  
...  
Keyword(s):  
Open Cluster ◽  
Variable Stars ◽  
Young Open Cluster
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