Astrometric monitoring and orbit constraint of the GSC 08047−00232 system with VLT/NaCo
Astrometric monitoring and orbit constraint of the GSC 08047−00232 system with VLT/NaCo
复制标题
采用 VLT/NaCo 的 GSC 08047â00232 系统的天体测量监测和轨道约束
DOI:
10.1093/mnras/stt2263
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发表时间:
2014
影响因子:
4.8
通讯作者:
Schmidt T.O.B.
中科院分区:
文献类型:
--
作者:
Ginski C;Mugrauer M;Neuhäuser R;Schmidt T.O.B.
Relatively massive directly imaged substellar companions around nearby stars form a very intriguing class of objects. Their relatively high mass at wide separations from their host stars might suggest a more star-like formation via gravitational collapse in protostellar discs. However, also formation by core accretion (either in situ or further in and then migrating outwards) or gravitational protoplanetary disc instability is another possibility. Determining the orbit parameters of such companions will be an important step to put constraints on masses and formation scenarios. In addition, the detection of curvature in the orbits would enable us to exclude the possibility of a by-chance alignment, and would thus prove that the primary and companion are orbiting each other. The brown dwarf companion to GSC 08047−00232 was discovered in parallel by Neuhäuser et al. and Chauvin et al. We present new astrometric measurements of this system taken in the course of the past 4 years. In addition, we analyse all previously available astrometric data points of this system. With a total time baseline of more than 10 years, we were able to clearly detect differential motion between the primary star and companion. Furthermore, we can now put some constraints on the possible orbits of the companion.
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DOI:
10.1086/301539
发表时间:
2000
期刊:
The Astronomical Journal
影响因子:
--
作者:
C. Torres;L. da Silva;G. Quast;R. de la Reza;E. Jilinski
通讯作者:
E. Jilinski
DOI:
10.1111/j.1365-2966.2012.21216.x
发表时间:
2012
影响因子:
4.8
作者:
M. Mugrauer;T. Röll;C. Ginski;N. Vogt;R. Neuhäuser;T. Schmidt
通讯作者:
T. Schmidt
影响因子:
6.5
作者:
G. Chauvin;M. Thomson;C. Dumas;J. Beuzit;P. Lowrance;T. Fusco;A. Lagrange;B. Zuckerman;D. Mouillet
通讯作者:
D. Mouillet
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
Luis A. Pérez;I. Martínez;Héctor M Mora Montes
通讯作者:
Héctor M Mora Montes
影响因子:
6.5
作者:
R. Neuhaeuser;E. Guenther
通讯作者:
E. Guenther