52 citations · 180 across the 4 of their papers we have counts for
8 papers
A New Brown Dwarf Desert? A Scarcity of Wide Ultracool Binaries
Peter R. Allen, David W. Koerner, Michael W. McElwain +2
We present the results of a deep-imaging search for wide companions to low-mass stars and brown dwarfs using NSFCam on IRTF. We searched a sample of 132 M7-L8 dwarfs to magnitude l…
First High-Contrast Science with an Integral Field Spectrograph: the Sub-Stellar Companion to GQ Lup
Michael W. McElwain, Stanimir A. Metchev, James E. Larkin +6
We present commissioning data from the OSIRIS integral field spectrograph (IFS) on the Keck II 10 m telescope that demonstrate the utility of adaptive optics IFS spectroscopy in st…
Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. II. 2MASS J 17072343-0558249AB
Michael W. McElwain, Adam J. Burgasser
We present IRTF SpeX observations of the M/L binary system 2MASS J17072343-0558249. SpeX imaging resolves the system into a 1"01+/-0.17 visual binary in which both components have…
Diffraction Limited Imaging Spectroscopy of the SgrA* Region using OSIRIS, a new Keck Instrument
A. Krabbe, C. Iserlohe, J. E. Larkin +5
We present diffraction limited spectroscopic observations of an infrared flare associated with the radio source SgrA*. These are the first results obtained with OSIRIS, the new fac…
Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05-303832.9AB
Adam J. Burgasser, Michael W. McElwain
We present the discovery of the common proper motion M9 + L0 binary DENIS J220002.05-303832.9AB, identified serendipitously with the SpeX near infrared imager/spectrograph. Spectra…
The 2MASS Wide-Field T Dwarf Search. V. Discovery of a T Dwarf via Methane Imaging
S. C. Ellis, C. G. Tinney, Adam J. Burgasser +2
We present the discovery of a T dwarf, 2M2151-4853, via differential imaging through methane filters. The filters are designed to highlight the strong absorption in the H band, due…