A search for a distant companion to the sun with the wide-field infrared survey explorer

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

I have used multi-epoch astrometry from the Wide-field Infrared Survey Explorer to perform a search for a distant companion to the Sun via its parallactic motion. I have not found an object of this kind down to W2 = 14.5. This limit corresponds to analogs of Saturn and Jupiter at 28,000 and 82,000 AU, respectively, according to models of the Jovian planets by Fortney and coworkers. Models of brown dwarfs by Burrows and coworkers predict fainter fluxes at a given mass for the age of the solar system, producing a closer distance limit of 26,000 AU for a Jupiter-mass brown dwarf. These constraints exclude most combinations of mass and separation at which a solar companion has been suggested to exist by various studies over the years.

Original languageEnglish (US)
Article number4
JournalAstrophysical Journal
Volume781
Issue number1
DOIs
StatePublished - Jan 20 2014

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'A search for a distant companion to the sun with the wide-field infrared survey explorer'. Together they form a unique fingerprint.

  • Cite this