High Proper Motion Objects from the UKIDSS Galactic Plane Survey

Abstract

The UKIDSS Galactic Plane Survey (GPS) began in 2005 as a 7 year effort to survey ~1800 square degrees of the northern Galactic plane in the J, H, and K passbands. The survey included a second epoch of K band data, with a baseline of 2 to 8 years, for the purpose of investigating variability and measuring proper motions. We have calculated proper motions for 167 Million sources in a 900 square degree area located at l > 60 degrees in order to search for new high proper motion objects. Visual inspection has verified 617 high proper motion sources (> 200 mas/yr) down to K=17, of which 153 are new discoveries. Among these we have a new spectroscopically confirmed T5 dwarf, an additional T dwarf with estimated type T6, 13 new L dwarf candidates, and two new common proper motion systems containing ultracool dwarf candidates. We provide improved proper motions for an additional 12 high proper motion stars that were independently discovered in the WISE dataset during the course of this investigation.

Accepted for publication in the MNRAS main journal

References in corpus (36)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• The USNO-B Catalog
• The Theory of Brown Dwarfs and Extrasolar Giant Planets
• The PPMXL catalog of positions and proper motions on the ICRS. Combining USNO-B1.0 and 2MASS
• The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition
• The UKIDSS Galactic Plane Survey
• A Unified Near Infrared Spectral Classification Scheme for T Dwarfs
• The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
• A Catalog of Northern Stars With Annual Proper Motions Larger Than 0.15 Seconds of Arc (LSPM catalog - North)
• Discoveries from a Near-infrared Proper Motion Survey using Multi-epoch 2MASS Data
• The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs
• The UKIRT Infrared Deep Sky Survey Early Data Release
• Discovery of a Binary Brown Dwarf at 2 Parsecs from the Sun
• Meeting the Cool Neighbors VIII: A preliminary 20-parsec census from the NLTT catalogue
• Discovery of 11 New T Dwarfs in the Two Micron All-Sky Survey, Including a Possible L/T Transition Binary
• The AllWISE Motion Survey and The Quest for Cold Subdwarfs
• The discovery of a very cool, very nearby brown dwarf in the Galactic plane
• A Study of the Diverse T Dwarf Population Revealed by WISE
• Finding benchmark brown dwarfs to probe the IMF as a function of time
• Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS database
• The properties of the T8.5p dwarf Ross 458C
• Extending the Canada-France brown Dwarfs Survey to the near-infrared: first ultracool brown dwarfs from CFBDSIR
• The sub-stellar birth rate from UKIDSS
• DENIS J081730.0-615520: An overlooked mid-T dwarf in the solar neighborhood
• Neighbours hiding in the Galactic plane - a new M/L dwarf candidate for the 8pc sample
• One more neighbor: The first brown dwarf in the VVV survey
• Identifying Ultra-Cool Dwarfs at Low Galactic Latitudes: A Southern Candidate Catalogue
• Discovery of Four High Proper Motion L Dwarfs, Including a 10 pc L Dwarf at the L/T Transition
• Extreme Infrared Variables from UKIDSS - I. A Concentration in Star Forming Regions
• WISEP J180026.60+013453.1: A Nearby Late L Dwarf Near the Galactic Plane
• A 1500 deg${}^2$ Near Infrared Proper Motion Catalogue from the UKIDSS Large Area Survey
• The discovery of the T8.5 dwarf UGPS J0521+3640
• Discovery of a Late L Dwarf: WISEP J060738.65+242953.4
• The Solar Neighborhood XXVII: Discovery of New Proper Motion Stars with mu > 0.18 "/yr in the Southern Sky with 16.5 > R_59F > 18.0
• The Solar Neighborhood XXV: Discovery of New Proper Motion Stars with 0.40 "/yr > mu > 0.18 "/yr between Declinations -47 degrees and 00 degrees

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• The Field Substellar Mass Function Based on the Full-sky 20-pc Census of 525 L, T, and Y Dwarfs
• Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3$\pi$ Survey
• The Hawaii Infrared Parallax Program. IV. A Comprehensive Parallax Survey of L0-T8 dwarfs with UKIRT
• New ultra-cool and brown dwarf candidates in Gaia DR2
• The Gaia Ultracool Dwarf Sample. I. Known L and T dwarfs and the first Gaia data release
• Photometric brown-dwarf classification. II. A homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 with accurate spectral types
• A Brown Dwarf Census from the SIMP Survey
• Extreme infrared variables from UKIDSS - II. an end-of-survey catalogue of eruptive YSOs and unusual stars
• Discovery of a brown dwarf companion to the A3V star β Circini
• VIRAC2: NIR Astrometry and Time Series Photometry for 500M+ Stars from the VVV and VVVX Surveys
• Temperature constraints on the coldest brown dwarf known WISE 0855-0714
• VVV High proper motion stars I. The catalogue of bright Ks < 13.5 stars
• New ultracool dwarf candidates from multi-epoch WISE data