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THE ORBIT OF THE L DWARF + T DWARF SPECTRAL BINARY SDSS J080531.84+481233.0* [PDF]
The Astrophysical Journal, 2016 ABSTRACT SDSS J080531.84+481233.0 is a closely separated, very-low-mass (VLM) binary identified through combined-light spectroscopy and confirmed as an astrometric variable. Here we report four years of radial velocity monitoring observations of the system that reveal significant and periodic variability, confirming the binary nature of ...
Adam J. Burgasser +4 more
openaire +3 more sources
Hawaii quasar and T dwarf survey. I. Method and discovery of faint field ultracool dwarfs [PDF]
, 2010 The Hawaii Quasar and T dwarf survey (HQT Survey) is a wide-field, red optical survey carried out with the Suprime-Cam mosaic CCD camera on the 8.2 m Subaru telescope. The HQT survey is designed to search for low-luminosity (M_(AB1450) 5.7) as well as
Capak, Peter L. +5 more
core +2 more sources
SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary [PDF]
The Astronomical Journal, 2007 SDSS J080531.84+481233.0 is a peculiar L-type dwarf that exhibits unusually blue near-infrared and mid-infrared colors and divergent optical (L4) and near-infrared (L9.5) spectral classifications. These peculiar spectral traits have been variously attributed to condensate cloud effects or subsolar metallicity.
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The 2MASS Wide-Field T Dwarf Search. V. Discovery of a T Dwarf via Methane Imaging [PDF]
The Astronomical Journal, 2005 Accepted for publication in AJ.
Ellis, SC +4 more
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The Astrophysical Journal, 2023 Brown dwarf spectra offer vital testbeds for our understanding of the chemical and physical processes that sculpt substellar atmospheres. Recently, atmospheric retrieval approaches have been successfully applied to low-resolution ( R ∼ 100) spectra of L,
Callie E. Hood +3 more
doaj +1 more source
NEGLECTED CLOUDS IN T AND Y DWARF ATMOSPHERES [PDF]
The Astrophysical Journal, 2012 17 pages, 12 figures, Accepted for publication in ...
Morley, Caroline V. +5 more
openaire +2 more sources
Investigating Possible Binarity for GJ 229B
The Astrophysical Journal Letters, 2023 GJ 229B, the first type-T brown dwarf to be discovered, has presented a tension between comparisons with evolutionary models and the larger-than-expected mass and radius values derived from spectroscopic and astrometric observations.
Alex R. Howe +2 more
doaj +1 more source
Time-resolved Optical Polarization Monitoring of the Most Variable Brown Dwarf
The Astronomical Journal, 2023 Recent atmospheric models for brown dwarfs suggest that the existence of clouds in substellar objects is not needed to reproduce their spectra, nor their rotationally induced photometric variability, believed to be due to the heterogeneous cloud coverage
Elena Manjavacas +5 more
doaj +1 more source
UVES spectra of young brown dwarfs in Cha I: radial and rotational velocities [PDF]
, 2001 Based on high-resolution UVES spectra we found that the radial velocity (RV) dispersion of nine of twelve known young bona fide and candidate brown dwarfs in the Cha I dark cloud is 2.0 km/s, i.e.
Balthasar +12 more
core +2 more sources
Extending the Canada-France Brown Dwarf Survey to the near infrared
EPJ Web of Conferences, 2011 We present the first results of the Canada-France Brown Dwarfs Survey-InfraRed, hereafter CFBDSIR, our near infrared extension to the optical wide field survey CFBDS.
Bertin E. +8 more
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