Luo Yangping1; Wang Bo1; Chen Hailiang1; Zhang Xiaobin2; Han Zhanwen1
Source Publicationsciencechinaphysicsmechanicsastronomy
AbstractTo understand the formation mechanism of blue stragglers in open clusters, we conducted a photometric analysis for a blue straggler eclipsing binary in the old open cluster NGC 2141. By using the least square fitting of times of minima, we derived the ephemeris and redetermined the orbital period of this system to be 0.6227 d. We have also done a photometric analysis for light curve with the Wilson-Devinney Code (2003). The photometric solutions reveal a semi-detached binary with the secondary component filling its Roche lobe. The photometric mass ratio M2/M1 (secondary/primary) was determined to be 0.190±0.002 and the ratio of V-band luminosity L2/L1(V) is about 0.033±0.001, which indicates the secondary component is overluminous. Thus, this blue straggler likely results from a substantial mass exchange between these two components.
Document Type期刊论文
Recommended Citation
GB/T 7714
Luo Yangping,Wang Bo,Chen Hailiang,et al. photometricanalysisofabluestragglereclipsingbinaryintheoldopenclusterngc2141[J]. sciencechinaphysicsmechanicsastronomy,2012,55(8):1500.
APA Luo Yangping,Wang Bo,Chen Hailiang,Zhang Xiaobin,&Han Zhanwen.(2012).photometricanalysisofabluestragglereclipsingbinaryintheoldopenclusterngc2141.sciencechinaphysicsmechanicsastronomy,55(8),1500.
MLA Luo Yangping,et al."photometricanalysisofabluestragglereclipsingbinaryintheoldopenclusterngc2141".sciencechinaphysicsmechanicsastronomy 55.8(2012):1500.
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