Mass and Orbit Constraints of the Gamma-ray Binary LS 5039

被引:0
|
作者
Szalai, T. [1 ]
Sarty, G. E. [2 ,3 ]
Kiss, L. L. [4 ]
Matthews, J. M. [5 ]
Vinko, J. [1 ]
Kiss, C. [4 ]
机构
[1] Univ Szeged, Dept Opt & Quantum Elect, Dom Ter 9, H-6720 Szeged, Hungary
[2] Royal Astron Soc Canada, Saskatoon Ctr, Saskatoon, SK S7N 4J8, Canada
[3] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada
[4] Hungarian Acad Sci, Konkoly Observ, H-1525 Budapest, Hungary
[5] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
来源
FROM INTERACTING BINARIES TO EXOPLANETS: ESSENTIAL MODELING TOOLS | 2012年 / 282期
基金
澳大利亚研究理事会;
关键词
binaries: spectroscopic; stars: individual (LS 5039);
D O I
10.1017/S1743921311027761
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the results of space-based photometric and ground-based spectroscopic observing campaigns on the gamma-ray binary LS 5039. The new orbital and physical parameters of the system are similar to former results, except we found a lower eccentricity. Our MOST-data show that any broad-band optical photometric variability at the orbital period is below the 2 mmag level. Light curve simulations support the lower value of eccentricity and imply that the mass of the compact object is higher than 1.8 M-circle dot.
引用
收藏
页码:331 / +
页数:2
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