127 citations · 831 across the 16 of their papers we have counts for
16 papers
Primeval very low-mass stars and brown dwarfs. I. Six new L subdwarfs, classification and atmospheric properties
Z. H. Zhang, D. J. Pinfield, M. C. Galvez-Ortiz +10
We have conducted a search for L subdwarf candidates within the photometric catalogues of the UKIRT Infrared Deep Sky Survey and Sloan Digital Sky Survey. Six of our candidates are…
A large spectroscopic sample of L and T dwarfs from UKIDSS LAS: peculiar objects, binaries, and space density
F. Marocco, H. R. A. Jones, A. C. Day-Jones +7
We present the spectroscopic analysis of a large sample of late-M, L, and T dwarfs from UKIDSS. Using the YJHK photometry from ULAS and the red-optical photometry from SDSS we sele…
Discovery of a new Y dwarf: WISE J030449.03-270508.3
D. J. Pinfield, M. Gromadzki, S. K. Leggett +21
We present a new Y dwarf, WISE J030449.03-270508.3, confirmed from a candidate sample designed to pick out low temperature objects from the WISE database. The new object is typed Y…
The extremely red L dwarf ULAS J222711004547 - dominated by dust
F. Marocco, A. C. Day-Jones, P. W. Lucas +8
We report the discovery of a peculiar L dwarf from the UKIDSS LAS, ULAS J222711-004547. The very red infrared photometry (MKO J-K = 2.790.06, WISE W1-W2 = 0.650.05) of UL…
A deep WISE search for very late type objects and the discovery of two halo/thick-disk T dwarfs: WISE 0013+0634 and WISE 0833+0052
D. J. Pinfield, J. Gomes, A. C. Day-Jones +21
A method is defined for identifying late T and Y dwarfs in WISE down to low values of signal-to-noise. This requires a WISE detection only in the W2-band and uses the statistical p…
A spectroscopic and proper motion search of Sloan digital Sky Survey: red subdwarfs in binary systems
Z. H. Zhang, D. J. Pinfield, B. Burningham +13
Red subdwarfs in binary systems are crucial for both model calibration and spectral classification. We search for red subdwarfs in binary systems from a sample of high proper motio…
Seventy six T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density
Ben Burningham, C. V. Cardoso, L. Smith +34
We report the discovery of 76 new T dwarfs from the UKIDSS Large Area Survey (LAS). Near-infrared broad and narrow-band photometry and spectroscopy are presented for the new object…
Two new ultra-cool benchmark systems from WISE+2MASS
J. I. Gomes, D. J. Pinfield, F. Marocco +6
We have used the 2MASS all-sky survey and the WISE to look for ultracool dwarfs that are part of multiple systems containing main sequence stars. We cross-matched L dwarf candidate…
The sub-stellar birth rate from UKIDSS
A. C. Day-Jones, F. Marocco, D. J. Pinfield +11
We present a new sample of mid L to mid T dwarfs with effective temperatures of 1100 to 1700K selected from the UKIDSS Large Area Survey and confirmed with infrared spectra from X-…
The brightest pure-H ultracool white dwarf
S. Catalan, P. -E. Tremblay, D. J. Pinfield +9
We report the identification of LSR J0745+2627 in the United Kingdom InfraRed Telescope Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) as a cool white dwarf with kinemat…
Discovery of the benchmark metal poor T8 dwarf BD+01 2920B
D. J. Pinfield, B. Burningham, N. Lodieu +20
We have searched the WISE first data release for widely separated (<10,000AU) late T dwarf companions to Hipparcos and Gliese stars. We have discovered a new binary system containi…
The properties of the T8.5p dwarf Ross 458C
Ben Burningham, S. K. Leggett, D. Homeier +12
We present near-infrared photometry and spectroscopy, and warm-Spitzer IRAC photometry of the young very cool T dwarf Ross 458C, which we have typed as T8.5p. By applying the fiduc…
The discovery of the T8.5 dwarf UGPS J0521+3640
Ben Burningham, P. W. Lucas, S. K. Leggett +15
We have carried out a search for late-type T dwarfs in the UKIDSS Galactic Plane Survey 6th Data Release. The search yielded two persuasive candidates, both of which have been conf…
Discovery of a T dwarf + white dwarf binary system
A. C. Day-Jones, D. J. Pinfield, M. T. Ruiz +11
We present the discovery of the first T dwarf + white dwarf binary system LSPM 1459+0857AB, confirmed through common proper motion and spectroscopy. The white dwarf is a high prope…
Testing circumstellar disk lifetimes in young embedded clusters associated with the Vela Molecular Ridge
Fabrizio Massi, Elisa Di Carlo, Claudio Codella +3
Context. The Vela Molecular Ridge hosts a number of young embedded star clusters in the same evolutionary stage. Aims. The main aim of the present work is testing whether the fract…
Molecular gas and a new young stellar cluster in the far outer Galaxy
Joao L. Yun, Davide Elia, Pedro M. Palmeirim +2
We investigate the star-formation ocurring in the region towards IRAS07527-3446 in the molecular cloud [MAB97]250.63-3.63, in the far outer Galaxy. We report the discovery of a new…