A near-infrared, wide-field, proper-motion search for brown dwarfs

Joannah L. Hinz, Donald W Mccarthy, Doug A. Simons, Todd J. Henry, J. Davy Kirkpatrick, Patrick C. McGuire

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A common proper-motion survey of M dwarf stars within 8 pc of the Sun reveals no new stellar or brown dwarf companions at wide separations (∼100-1400 AU). This survey tests whether the brown dwarf "desert" extends to large separations around M dwarf stars and further explores the census of the solar neighborhood. The sample includes 66 stars north of -30° and within 8 pc of the Sun. Existing first-epoch images are compared with new J-band images of the same fields an average of 7 yr later to reveal proper-motion companions within a ∼4′ radius of the primary star. No new companions are detected to a J-band limiting magnitude of ∼16.5, corresponding to a companion mass of ∼40 Jupiter masses for an assumed age of 5 Gyr at the mean distance of the objects in the survey, 5.8 pc.

Original languageEnglish (US)
Pages (from-to)2027-2032
Number of pages6
JournalAstronomical Journal
Volume123
Issue number4 1756
DOIs
StatePublished - Apr 2002

Fingerprint

proper motion
dwarf stars
near infrared
M stars
sun
stars
census
solar neighborhood
deserts
Jupiter (planet)
Jupiter
desert
time measurement
radii

Keywords

  • Stars: imaging
  • Stars: low-mass, brown dwarfs
  • Stars: statistics

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hinz, J. L., Mccarthy, D. W., Simons, D. A., Henry, T. J., Kirkpatrick, J. D., & McGuire, P. C. (2002). A near-infrared, wide-field, proper-motion search for brown dwarfs. Astronomical Journal, 123(4 1756), 2027-2032. https://doi.org/10.1086/339555

A near-infrared, wide-field, proper-motion search for brown dwarfs. / Hinz, Joannah L.; Mccarthy, Donald W; Simons, Doug A.; Henry, Todd J.; Kirkpatrick, J. Davy; McGuire, Patrick C.

In: Astronomical Journal, Vol. 123, No. 4 1756, 04.2002, p. 2027-2032.

Research output: Contribution to journalArticle

Hinz, JL, Mccarthy, DW, Simons, DA, Henry, TJ, Kirkpatrick, JD & McGuire, PC 2002, 'A near-infrared, wide-field, proper-motion search for brown dwarfs', Astronomical Journal, vol. 123, no. 4 1756, pp. 2027-2032. https://doi.org/10.1086/339555
Hinz JL, Mccarthy DW, Simons DA, Henry TJ, Kirkpatrick JD, McGuire PC. A near-infrared, wide-field, proper-motion search for brown dwarfs. Astronomical Journal. 2002 Apr;123(4 1756):2027-2032. https://doi.org/10.1086/339555
Hinz, Joannah L. ; Mccarthy, Donald W ; Simons, Doug A. ; Henry, Todd J. ; Kirkpatrick, J. Davy ; McGuire, Patrick C. / A near-infrared, wide-field, proper-motion search for brown dwarfs. In: Astronomical Journal. 2002 ; Vol. 123, No. 4 1756. pp. 2027-2032.
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