Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· arXiv e-print (arXiv:astro-ph/9908038)
· References in the article
· Citations to the Article (54) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Discovery of a planet orbiting a binary star system from gravitational microlensing
Authors:
Bennett, D. P.; Rhie, S. H.; Becker, A. C.; Butler, N.; Dann, J.; Kaspi, S.; Leibowitz, E. M.; Lipkin, Y.; Maoz, D.; Mendelson, H.; Peterson, B. A.; Quinn, J.; Shemmer, O.; Thomson, S.; Turner, S. E.
Publication:
Nature, Volume 402, Issue 6757, pp. 57-59 (1999). (Nature Homepage)
Publication Date:
11/1999
Origin:
NATURE
DOI:
10.1038/46990
Bibliographic Code:
1999Natur.402...57B

Abstract

The properties of the recently discovered extrasolar planets were not anticipated by theoretical work on the formation of planetary systems, most models for which were developed to explain our Solar System. Indeed, the observational technique used to detect these planets (measurement of radial-velocity shifts in stellar spectral lines) do not yet have the sensitivity to detect planetary systems like our own. Here we report observations and modelling of the gravitational microlensing event MACHO-97-BLG-41. We infer that the lens system consists of a planet of about 3 Jupiter masses orbiting a binary stellar system consisting of a late-K dwarf star and an M dwarf. The stars are separated by ~1.8 astronomical units (1AU is the Earth-Sun distance), and the planet is orbiting them at a distance of about 7AU. We had expected to find first the microlensing signature of jovian planets around single stars, so this result suggests that such planets orbiting short-period binary stars may be common.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints