Analysis of the Hipparcos measurements of υ Andromedae:: A mass estimate of its outermost known planetary companion

被引：45

作者：

Mazeh, T ^{[1
]}

Zucker, S

Dalla Torre, A

van Leeuwen, F

机构：

[1] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[2] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, IL-69978 Tel Aviv, Israel

[3] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 522卷 / 02期

关键词：

astrometry; planetary systems; stars : individual (upsilon Andromedae);

D O I：

10.1086/312231

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of Hipparcos astrometric measurements of upsilon Andromedae, a nearby main-sequence star around which three planet candidates have recently been discovered by means of radial velocity measurements. The stellar orbit associated with the outermost candidate has a period of 1269 +/- 9 days and a minimum semimajor axis of 0.6 mas. Using the Hipparcos data together with the spectroscopic elements, we found a semimajor axis of 1.4 +/- 0.6 mas. This implies a mass of 10.1(-4.6)(+4.7) Jupiter masses for that planet of upsilon And.

引用

页码：L149 / L151

页数：3

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