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48 papers · 1 filter
Identification of a Wide, Low-Mass Multiple System Containing the Brown Dwarf 2MASS J0850359+105716
Jacqueline K. Faherty, Adam J. Burgasser, John J. Bochanski +3
We report our discovery of NLTT 20346 as an M5+M6 companion system to the tight binary (or triple) L dwarf 2MASS J0850359+105716. This nearby (~31 pc), widely separated (~7700 AU)…
The Solar Neighborhood XXIII CCD Photometric Distance Estimates of SCR Targets -- 77 M Dwarf Systems within 25 Parsecs
Jennifer G. Winters, Todd J. Henry, Wei-Chun Jao +3
We present CCD photometric distance estimates of 100 SCR (SuperCOSMOS RECONS) systems with 0$\farcs$18/yr, 28 of which are new discoveries previously unpublished in this…
NGC 1866: a milestone for understanding the chemical evolution of stellar populations in the LMC
A. Mucciarelli, S. Cristallo, E. Brocato +9
We present new FLAMES@VLT spectroscopic observations of 30 stars in the field of the LMC stellar cluster NGC 1866. NGC 1866 is one of the few young and massive globular cluster tha…
Anatomy of a post-starburst minor merger: a multi-wavelength WFC3 study of NGC 4150
R. Mark Crockett, Sugata Kaviraj, Joseph I. Silk +22
(Abridged) We present a spatially-resolved near-UV/optical study of NGC 4150, using the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. Previous studies of this ear…
Precision photometric monitoring of very low mass Sigma Orionis cluster members: variability and rotation at a few Myr
Ann Marie Cody, Lynne Hillenbrand
We present high-precision photometry on 107 variable low-mass stars and brown dwarfs in the ~3 Myr Sigma Orionis open cluster. We have carried out I-band photometric monitoring wit…
Low-mass visual companions to nearby G-dwarfs
Andrei Tokovinin
Complete census of wide visual companions to nearby G-dwarf stars can be achieved by selecting candidates from the 2MASS Point-Source Catalog and checking their status by second-ep…