Spectroscopic distances of 322 NLTT stars (Scholz+, 2005)

Details Spectroscopic distances of 322 NLTT stars (Scholz+, 2005) Spectroscopic distances of 322 NLTT stars (Scholz+, 2005)

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..34420211s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/442/211. Originally published in: 2005A&A...442..211S

Physics

Surveys, Stars: Nearby, Stars: Pre-Main Sequence, Mk Spectral Classification, Stars: Distances

Scientific paper

Distance estimates based on low-resolution spectroscopy and Two Micron All Sky Survey (2MASS, Cat. ) J magnitudes are presented for 322 nearby candidates from Luyten's NLTT catalogue (). Mainly relatively bright (typically 7100pc) objects have also been identified, including a probable halo, but relatively hot (Teff=13000K) white dwarf (LHS 1200) and 10 red dwarfs with extremely large tangential velocities (250t<1150km/s). Altogether, there are 11 red dwarfs (including one within 70pc) with tangential velocities larger than about 250km/s. All these objects are suspected to be in fact subdwarfs, if so, their distances would be only about half of our original estimates. The three most extreme objects in that respect are the K and early M dwarfs LP 323-168, LHS 5343 and LP 552-21 with corrected distances between 180pc and 400pc and resulting tangential velocities still larger than about 400km/s.
(3 data files).

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