THE ORBITS OF THE γ-RAY BINARIES LS I+61 303 AND LS 5039

被引：102

作者：

Aragona, Christina ^{[1
]}

McSwain, M. Virginia ^{[1
]}

Grundstrom, Erika D. ^{[2
]}

Marsh, Amber N. ^{[3
]}

Roettenbacher, Rachael M. ^{[3
]}

Hessler, Katelyn M. ^{[3
]}

Boyajian, Tabetha S. ^{[4
,5
]}

Ray, Paul S. ^{[6
]}

机构：

[1] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[3] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA

[4] Georgia State Univ, Ctr High Angular Resolut Astron, Atlanta, GA 30303 USA

[5] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[6] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 698卷 / 01期

基金：

美国国家科学基金会;

关键词：

binaries: spectroscopic; stars:; individual; (LS; 5039; LS I+61 303); MICROQUASAR LS-I+61-303; BLACK-HOLE; LS-5039; EMISSION; DISCOVERY; SPECTRUM; HESS;

D O I：

10.1088/0004-637X/698/1/514

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

LS I +61 303 and LS 5039 are two of only a handful of known high-mass X-ray binaries (HMXBs) that exhibit very high energy emission in the MeV-TeV range, and these "gamma-ray binaries" are of renewed interest due to the recent launch of the Fermi Gamma-ray Space Telescope. Here we present new radial velocities of both systems based on recent red and blue optical spectra. Both systems have somewhat discrepant orbital solutions available in the literature, and our new measurements result in improved orbital elements and resolve the disagreements. The improved geometry of each orbit will aid in studies of the high-energy emission region near each source.

引用

页码：514 / 518

页数：5

共 32 条

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