Citation
T. Mazeh et al., Analysis of the Hipparcos measurements of upsilon Andromedae: A mass estimate of its outermost known planetary companion, ASTROPHYS J, 522(2), 1999, pp. L149-L151
Citations number
28
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X
→ ACNP
Volume
522
Issue
2
Year of publication
1999
Part
2
Pages
L149 - L151
Database
ISI
SICI code
0004-637X(19990910)522:2<L149:AOTHMO>2.0.ZU;2-U
Abstract
We present an analysis of Hipparcos astrometric measurements of upsilon And
romedae, a nearby main-sequence star around which three planet candidates h
ave 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 dat
a 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 t
hat planet of upsilon And.