Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data

被引：20

作者：

Winn, Joshua N. ^{[1
]}

机构：

[1] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

ASTRONOMICAL JOURNAL | 2022年 / 164卷 / 05期

基金：

美国国家航空航天局;

关键词：

HUBBLE-SPACE-TELESCOPE; EXTRA-SOLAR PLANETS; IOTA HOROLOGII; SEARCH; STARS; MASS; COMPANION; CORALIE; CYCLE;

D O I：

10.3847/1538-3881/ac9126

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The third Gaia data release includes a catalog of exoplanets and exoplanet candidates identified via the star's astrometric motion. This paper reports on tests for consistency between the Gaia two-body orbital solutions and precise Doppler velocities for stars currently amenable to such a comparison. For BD-17 0063, HD 81040, and HD 132406, the Gaia orbital solution and the Doppler data were found to be consistent and were fitted jointly to obtain the best possible constraints on the planets' orbits and masses. Inconsistencies were found for four stars: HD 111232, probably due to additional planets that were not included in the astrometric model; HD 175167 and HR 810, possibly due to inaccurate treatment of non-Gaussian uncertainties in the Gaia orbital solutions; and HIP 66074, for unknown reasons. Consistency tests were also performed for HD 114762, which was reported in 1989 to have a brown dwarf or exoplanet but has since been shown to be a binary star. The joint Gaia-Doppler analysis shows the secondary mass to be 0.215 +/- 0.013 M (circle dot) and the orbital inclination to be 3.degrees 63 +/- 0.degrees 06.

引用

页数：21

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