219 citations · 507 across the 10 of their papers we have counts for
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Nearby young stars selected by proper motion. I. Four new members of the Beta Pictoris moving group from the Tycho-2 catalog
Sebastien Lepine, Michal Simon
We describe a procedure to identify stars from nearby moving groups and associations out of catalogs of stars with large proper motions. We show that from the mean motion vector of…
Ultracool Subdwarfs: The Halo Population Down to the Substellar Limit
Adam J. Burgasser, Sebastien Lepine, Nicolas Lodieu +5
Ultracool subdwarfs are low luminosity, late-type M and L dwarfs that exhibit spectroscopic indications of subsolar metallicity and halo kinematics. Their recent discovery and ongo…
Parallax and Distance Estimates for Twelve Cataclysmic Variable Stars
J. R. Thorstensen, S. Lepine, M. Shara
We report parallax and distance estimates for twelve more cataclysmic binaries and related objects observed with the 2.4m Hiltner telescope at MDM Observatory. The final parallax a…
Twenty-three new ultra-cool subdwarfs from the Sloan Digital Sky Survey
Sebastien Lepine, Ralf-Dieter Scholz
A search of the Sloan Digital Sky Survey spectroscopic database has turned up 23 new ultra-cool subdwarfs, low-mass metal-poor stars of spectral subtype M 7.0 or later. Spectra fro…
New High Proper Motion Stars from the Digitized Sky Survey. IV. Completion of the Southern Survey and 170 Additional Stars with pm>0.45 arcsec/yr
Sebastien Lepine
Completion of the SUPERBLINK proper motion survey in the southern celestial hemisphere has turned up 170 new stars with proper motion 0.45 arcsec/yr < pm < 2.0 arcsec/yr. This four…
Parallax and Luminosity Measurements of an L Subdwarf
Adam J. Burgasser, Frederick J. Vrba, Sébastien Lépine +5
We present the first parallax and luminosity measurements for an L subdwarf, the sdL7 2MASS J05325346+8246465. Observations conducted over three years by the USNO infrared astromet…