179 citations · 2.5k across the 48 of their papers we have counts for
6 papers · 1 filter
The current population of benchmark brown dwarfs
A. C. Day-Jones, D. J. Pinfield, M. T. Ruiz +7
The number of brown dwarfs (BDs) now identified tops 700. Yet our understanding of these cool objects is still lacking, and models are struggling to accurately reproduce observatio…
The distance to the cool T9 brown dwarf ULAS J003402.77-005206.7
R. L. Smart, H. R. A. Jones, M. G. Lattanzi +8
Aims. We demonstrate the feasibility of determining parallaxes for nearby objects with theWide Field Camera on the United Kingdom Infrared Telescope (UKIRT) using the UKIRT Infrare…
Benchmark ultra-cool dwarfs in widely separated binary systems
Z. H. Zhang, D. J. Pinfield, A. C. Day-Jones +2
Ultra-cool dwarfs as wide companions to subgiants, giants, white dwarfs and main sequence stars can be very good benchmark objects, for which we can infer physical properties with…
Ultra-cool dwarfs: new discoveries, proper motions, and improved spectral typing from SDSS and 2MASS photometric colors
Z. H. Zhang, R. S. Pokorny, H. R. A. Jones +6
Aims. We try to identify ultra-cool dwarfs from the seventh Data Release of the Sloan Digital Sky Survey (SDSS DR7) with SDSS i-z and r-z colors. We also obtain proper motion data…
Ultra-cool Dwarfs from Large Area Surveys
Z. H. Zhang, H. R. A. Jones, D. J. Pinfield +2
We selected brown dwarf candidates from the seventh Data Release of the Sloan Digital Sky Survey (SDSS DR7) with new photometric selectioncriteria based on a parameteriaztion of we…
The Physical Properties of Four ~600K T Dwarfs
S. K. Leggett, M. C. Cushing, D. Saumon +16
We present Spitzer 7.6-14.5um spectra of ULAS J003402.77-005206.7 and ULAS J133553.45+113005.2, two T9 dwarfs with the latest spectral types currently known. We fit synthetic spect…