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NPARSEC: NTT Parallaxes of Southern Extremely Cool objects. Goals, targets, procedures and first results

  • R.L. Smart
  • , C.G. Tinney
  • , B. Bucciarelli
  • , F. Marocco
  • , U. Abbas
  • , A. Andrei
  • , G. Bernardi
  • , B. Burningham
  • , C. Cardoso
  • , E. Costa
  • , M.T. Crosta
  • , M. Dapra
  • , A. Day-Jones
  • , B. Goldman
  • , H.R.A. Jones
  • , M.G. Lattanzi
  • , S.K. Leggett
  • , P.W. Lucas
  • , R. Mendez
  • , J.L. Penna
  • D.J. Pinfield, Leigh Smith, A. Sozzetti, A. Vecchiato

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)
80 Downloads (Pure)

Abstract

The discovery and subsequent detailed study of T dwarfs have provided many surprises and pushed the physics and modelling of cool atmospheres in unpredicted directions. Distance is a critical parameter for studies of these objects to determine intrinsic luminosities, test binarity and measure their motion in the Galaxy. We describe a new observational programme to determine distances across the full range of T-dwarf subtypes using the New Technology Telescope (NTT)/SOFI telescope/instrument combination. We present preliminary results for ten objects, five of which represent new distances.

Original languageEnglish
Pages (from-to)2054-2063
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society (MNRAS)
Volume433
Issue number3
DOIs
Publication statusPublished - Aug 2013

Keywords

  • methods: data analysis
  • astrometry
  • parallaxes
  • proper motions
  • brown dwarfs
  • T-DWARF SEARCH
  • ALL-SKY SURVEY
  • ULTRACOOL BROWN DWARFS
  • LARGE-AREA SURVEY
  • L/T TRANSITION
  • SPECTRAL CLASSIFICATION
  • PROPER MOTIONS
  • 2MASS
  • DISCOVERY
  • BINARY

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