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19 papers · 1 filter
Triplicity and Physical Characteristics of Asteroid (216) Kleopatra
Pascal Descamps, F. Marchis, J. Berthier +16
To take full advantage of the September 2008 opposition passage of the M-type asteroid (216) Kleopatra, we have used near-infrared adaptive optics (AO) imaging with the W.M. Keck I…
MARVELS-1b: A Short-Period, Brown Dwarf Desert Candidate from the SDSS-III MARVELS Planet Search
Brian L. Lee, Jian Ge, Scott W. Fleming +59
We present a new short-period brown dwarf candidate around the star TYC 1240-00945-1. This candidate was discovered in the first year of the Multi-object APO Radial Velocity Exopla…
The Voronoi Tessellation cluster finder in 2+1 dimensions
Marcelle Soares-Santos, Reinaldo R. de Carvalho, James Annis +6
We present a detailed description of the Voronoi Tessellation (VT) cluster finder algorithm in 2+1 dimensions, which improves on past implementations of this technique. The need fo…
Parallaxes of Southern Extremely Cool objects - I: Targets, Proper motions and first results
Alexandre H. Andrei, Richard L. Smart, Jucira L. Penna +11
We present results from the PARallaxes of Southern Extremely Cool objects (PARSEC) program, an observational program begun in April 2007 to determine parallaxes for 122 L and 28 T…
Asteroid age distributions determined by space weathering and collisional evolution models
Mark Willman, Robert Jedicke
We provide evidence of consistency between the dynamical evolution of main belt asteroids and their color evolution due to space weathering. The dynamical age of an asteroid's surf…
Mn, Cu and Zn abundances in barium stars and their correlations with neutron capture elements
Dinah M. Allen, Gustavo F. Porto de Mello
We present abundances of Mn, Cu, Zn and various light and heavy elements for a sample of barium and normal giant stars, and present correlations between abundances contributed to d…