Photometric analysis of a blue straggler eclipsing binary in the old open cluster NGC 2141

2012 ◽  
Vol 55 (8) ◽  
pp. 1500-1504 ◽  
Author(s):  
YangPing Luo ◽  
Bo Wang ◽  
HaiLiang Chen ◽  
XiaoBin Zhang ◽  
ZhanWen Han
Keyword(s):  
Open Cluster ◽  
Photometric Analysis ◽  
Eclipsing Binary ◽  
Blue Straggler

scholarly journals AN ASTROMETRIC AND PHOTOMETRIC STUDY OF THE INTERMEDIATE-AGE OPEN CLUSTER NGC 2158 AND ITS ECLIPSING BINARY [NBN2015]78

2020 ◽  
Vol 56 (2) ◽  
pp. 245-257
Author(s):  
A. E. Abdelaziz ◽  
Y. H. M. Hendy ◽  
A. Shokry ◽  
S. M. Saad ◽  
F. Y. Kamal ◽  
...  
Keyword(s):  
Open Cluster ◽  
Distance Modulus ◽  
Mass Ratio ◽  
Photometric Analysis ◽  
Eclipsing Binary ◽  
Color Excess ◽  
Contact Binary ◽  
Cluster Age ◽  
Gaia Dr2 ◽  
Intrinsic Distance

We present a photometric and astrometric analysis of the NGC 2158 cluster using Gaia DR2 and 2MASS data. The cluster age, color excess, intrinsic distance modulus and distance are calculated to be t = 2.240 ± 0.260 Gyr, E(B − V) = 0.420 ± 0.050 mag, (m − M)⨀ = 12.540 ± 0.130 mag and d⨀ = 3224 ± 200 pc respectively. The photometric analysis and light curve modelling of the proposed eclipsing binary member [NBN2015]78 is performed using the latest version of the Wilson-Devinney (W-D) code. The solutions show that the system is an over-contact binary with a secondary component filling its Roche lobe, with a mass ratio q = 0.262. The primary and the secondary components of the system consist of two late spectral types K1 and K2 respectively. The membership of [NBN2015]78 is discussed using two independent methods, and we find that [NBN2015]78 is an interloper and not a member of NGC 2158.

scholarly journals The blue straggler S 1082: A triple system in the old open cluster M 67

2001 ◽  
Vol 375 (2) ◽  
pp. 375-386 ◽  
Author(s):  
M. van den Berg ◽  
J. Orosz ◽  
F. Verbunt ◽  
K. Stassun
Keyword(s):  
Triple System ◽  
Open Cluster ◽  
Blue Straggler

scholarly journals Spectroscopic Binaries in the Open Cluster M67

1992 ◽  
Vol 135 ◽  
pp. 155-157 ◽  
Author(s):  
David W. Latham ◽  
Robert D. Mathieu ◽  
Alejandra A.E. Milone ◽  
Robert J. Davis
Keyword(s):  
Circular Orbit ◽  
Main Sequence ◽  
Open Cluster ◽  
Radial Velocities ◽  
Spectroscopic Binaries ◽  
Eccentric Orbit ◽  
Circular Orbits ◽  
Blue Stragglers ◽  
Short Period ◽  
Blue Straggler

AbstractFor almost 400 members of M67 we have accumulated about 5,000 precise radial velocities. Already we have orbital solutions for more than 32 spectroscopic binaries in M67. Many of these orbits were derived by combining the Palomar and CfA observations, thus extending the time coverage to more than 20 years. The distribution of eccentricity versus period shows evidence for tidal circularization on the main sequence. The transition from circular orbits is fairly clean. Excluding the blue stragglers, the first eccentric orbit has a period of 11.0 days, while the last circular orbit has a period of 12.4 days. For longer periods the distribution of eccentricity is the same as for field stars. The blue straggler S1284 has an eccentric orbit despite its short period of 4.2 days.

scholarly journals The blue straggler population of the old open cluster Berkeley 17

2019 ◽  
Vol 624 ◽  
pp. A26 ◽  
Author(s):  
Souradeep Bhattacharya ◽  
Kaushar Vaidya ◽  
W. P. Chen ◽  
Giacomo Beccari
Keyword(s):  
Radial Distribution ◽  
Globular Clusters ◽  
Minimum Spanning Tree ◽  
Open Cluster ◽  
Dynamical Evolution ◽  
Open Clusters ◽  
Blue Straggler ◽  
Magnitude Diagram ◽  
First Time ◽  
Giant Branch Stars

Context. Blue straggler stars (BSSs) are observed in Galactic globular clusters and old open clusters. The radial distribution of BSSs has been used to diagnose the dynamical evolution of globular clusters. For the first time, with a reliable sample of BSSs identified with Gaia DR2, we conduct such an analysis for an open cluster. Aims. We aim to identify members, including BSSs, of the oldest known Galactic open cluster Berkeley 17 with the Gaia DR2 proper motions and parallaxes. We study the radial distribution of the BSS population to understand the dynamical evolution of the cluster. Methods. We selected cluster members to populate the colour magnitude diagram in the Gaia filters. Cluster parameters are derived using the brightest members. The BSSs and giant branch stars are identified, and their radial distributions are compared. The segregation of BSSs is also evaluated with respect to the giant branch stars using the minimum spanning tree (MST) analysis. Results. We determine Berkeley 17 to be at 3138.6−352.9+285.5 pc. We find 23 BSS cluster members, only two of which were previously identified. We find a bimodal radial distribution of BSSs supported by findings from the MST method. Conclusions. The bimodal radial distribution of BSSs in Berkeley 17 indicates that they have just started to sink towards the cluster centre, placing Berkeley 17 with globular clusters of intermediate dynamical age. This is the first such determination for an open cluster.

Photometric analysis of V30 of open cluster NGC 7789

2011 ◽  
Vol 11 (9) ◽  
pp. 1067-1073 ◽  
Author(s):  
Yellapragada Ravi Kiron ◽  
Kandulapati Sriram ◽  
Pasagada Vivekananda Rao
Keyword(s):  
Open Cluster ◽  
Photometric Analysis

The eclipsing binary HD 174853. II - Photometric analysis and model

1991 ◽  
Vol 102 ◽  
pp. 1777 ◽  
Author(s):  
Douglas P. Hube ◽  
Brian E. Martin
Keyword(s):  
Photometric Analysis ◽  
Eclipsing Binary

A photometric analysis of the eclipsing binary system X Pictoris

1988 ◽  
Vol 140 (1) ◽  
pp. 105-117
Author(s):  
Carlson R. Chambliss ◽  
Peter K. Detterline
Keyword(s):  
Binary System ◽  
Photometric Analysis ◽  
Eclipsing Binary

scholarly journals A Study of the Blue Straggler Population of the Old Open Cluster Collinder 261

2020 ◽  
Vol 159 (2) ◽  
pp. 59 ◽  
Author(s):  
M. J. Rain ◽  
G. Carraro ◽  
J. A. Ahumada ◽  
S. Villanova ◽  
H. Boffin ◽  
...  
Keyword(s):  
Open Cluster ◽  
Blue Straggler

A photometric analysis of the eclipsing binary OX Cassiopeiae

1989 ◽  
Vol 98 ◽  
pp. 1418 ◽  
Author(s):  
Greg Crinklaw ◽  
Paul B. Etzel
Keyword(s):  
Photometric Analysis ◽  
Eclipsing Binary
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