* Astronomy

Title: Spitzer Observations of two TW Hydrae Association Brown Dwarfs Authors: Basmah Riaz, John E. Gizis, Abraham Hmiel Researchers present Spitzer Space Telescope observations of two TW Hydrae Association brown dwarfs, 2MASSW J1207334-393254 and 2MASSW J1139511-3...

Astronomers using NASA's Spitzer Space Telescope have discovered of the smallest known brown dwarf. The brown dwarf contains only about 8 times the mass...

Title: Dynamical Mass of GJ 802B: a brown dwarf in a triple system Authors: M.J. Ireland, A. Kraus, F. Martinache, J.P. Lloyd, P.G. Tuthill We report a dynamical measurement of the mass of the brown dwarf GJ 802B using aperture-masking interferometry and astrometry. In addition, we report the disc...

After decades of searching, astronomers discovered the first definite brown dwarf only ten years ago. Now, a new analysis of Hubble Space Telescope data implies our Galaxy has almost as many of these failed stars as it does normal stars like the Sun. The Sun and most other stars power themselves by...

Astronomers Weigh the Coldest Brown Dwarfs Astronomers have used ultrasharp images obtained with the Keck Telescope and Hubble Space Telescope to determine for the first time the masses of the coldest class of "failed stars," a.k.a. brown dwarfs. With masses as light as 3 percent the m...

The Oldest Brown Dwarf Most of the halo stars previously known are members of stellar aggregates called globular clusters. Recently, however, large deep sky surveys have improved our knowledge on old halo stars living outside those clusters. Halo stars with masses from 10 times to only a few tenth...

An international team of astronomers has discovered the coldest brown dwarf star ever observed. This finding, to be published in Astronomy & Astrophysics, is a new step toward filling the gap between stars and planets. An international team led by French and Canadian astronomers has just di...

The best proto-brown dwarf candidate so far A recent study has found the best proto-brown dwarf candidate known to date. Calar Alto has contributed key data to this finding. This object, known as SSTB213 J041757, is placed in the constellation of Taurus, inside the dark cloud Barnard 213, at a dista...

Title: The discovery of a very cool binary system Authors: Ben Burningham, S. K. Leggett, P.W. Lucas, D.J. Pinfield, R.L. Smart, A.C. Day-Jones, H.R.A. Jones, D.Murray, E. Nickson, M. Tamura, Z. Zhang, N. Lodieu, C.G. Tinney, M. R. Zapatero Osorio We report the discovery of a very cool d/sdL7+T7.5...

Mysterious planet-like object reveals its surprising identity A mysterious planet-like object orbiting a not-quite-starlike "brown dwarf" is the most recent enigma discovered by astronomers with their ever-more powerful telescopes. Kamen Todorov, a graduate student at Penn St...

Title: Orbital motion of the young brown dwarf companion TWA 5 B Authors: R. Neuhäuser (1), T. O. B. Schmidt (1), V. V. Hambaryan (1), N. Vogt (2 and 3) ((1) Astrophysikalisches Institut und Universitäts-Sternwarte, Jena, Germany, (2) Departamento de Física y Astronomía, Valparaíso, Chile, (3) U...

NASA's Wide-field Infrared Survey Explorer, or WISE, has eyed its first cool brown dwarf: a tiny, ultra-cold star floating all alone in space. WISE is scanning the whole sky in infrared light, picking up the glow of not just brown dwarfs but also asteroids, stars and galaxies. It has sent millions of...

Title: Lucky Imaging Adaptive Optics of the brown dwarf binary GJ569Bab Authors: Autors: B. Femenía (1 and 2), R. Rebolo (1 and 3), J. A. Pérez-Prieto (1), S. R. Hildebrandt (1 and 4), L. Labadie (1 and 2), A. Pérez-Garrido (5), V. J. S. Béjar (1 and 2), A. Díaz-Sánchez (5), I. Villó (5), A. Oscoz (1), R. L...

Title: CFBDSIR J1458+1013B: A Very Cold (>T10) Brown Dwarf in a Binary System Authors: Michael C. Liu, Philippe Delorme, Trent J. Dupuy, Brendan P. Bowler, Loic Albert, Etienne Artigau, Celine Reyle, Thierry Forveille, Xavier Delfosse We have identified CFBDSIR J1458+10 as a 0.11" bin...

Title: Two very nearby (d ~ 5 pc) ultracool brown dwarfs detected by their large proper motions from WISE, 2MASS, and SDSS data Authors: R.-D. Scholz, G. Bihain, O. Schnurr, J. Storm (Leibniz-Institut für Astrophysik Potsdam (AIP)) Aims: WISE provides an infrared all-sky survey which aims at comp...

Title: High-Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. II. Secondary Spectrum: No Evidence that Spots Cause the Temperature Reversal Authors: Subhanjoy Mohanty, Keivan G. Stassun We present high-resolution optical spectra of the youn...

Title: WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System Authors: Christopher R. Gelino (IPAC), J. Davy Kirkpatrick (IPAC), Michael C. Cushing (JPL), Peter R. Eisenhardt (JPL), Roger L. Griffith (IPAC), Amanda K. Mainzer (JPL), Kenneth A. Marsh (IPAC), Michael F. Skrutski...

Title: Statistical Properties of Brown Dwarf Companions: Implications for Different Formation Mechanisms Authors: Bo Ma, Jian Ge The mass domain where massive extrasolar planets and brown dwarfs overlap is still poorly understood due to the paucity of brown dwarfs orbiting close to solar-typ...

	Forum	Replies	Views	Last Post
Brown Dwarf Dwarf Two TW Hydrae Association Brown Dwarfs (Preview)	Stars/galaxy News	5	4392	May 9 09:15 2008 by Blobrana
Title: Spitzer Observations of two TW Hydrae Association Brown Dwarfs Authors: Basmah Riaz, John E. Gizis, Abraham Hmiel Researchers present Spitzer Space Telescope observations of two TW Hydrae Association brown dwarfs, 2MASSW J1207334-393254 and 2MASSW J1139511-3...
Brown Dwarf Cha 110913-773444 (Preview)	Stars/galaxy News	1	101340	Nov 30 11:40 2005 by Blobrana
Astronomers using NASA's Spitzer Space Telescope have discovered of the smallest known brown dwarf. The brown dwarf contains only about 8 times the mass...
Brown dwarf GJ 802B (Preview)	Stars/galaxy News	0	1416	Jan 11 10:25 2008 by Blobrana
Title: Dynamical Mass of GJ 802B: a brown dwarf in a triple system Authors: M.J. Ireland, A. Kraus, F. Martinache, J.P. Lloyd, P.G. Tuthill We report a dynamical measurement of the mass of the brown dwarf GJ 802B using aperture-masking interferometry and astrometry. In addition, we report the disc...
Brown Dwarf Dwarf M dwarf Brown Dwarfs ( 1 2 3 4 5 … 8 ) (Preview)	Stars/galaxy News	71	36854	Jun 6 10:08 2017 by Blobrana
After decades of searching, astronomers discovered the first definite brown dwarf only ten years ago. Now, a new analysis of Hubble Space Telescope data implies our Galaxy has almost as many of these failed stars as it does normal stars like the Sun. The Sun and most other stars power themselves by...
Brown Dwarf 2MASS 1534-2952AB (Preview)	Stars/galaxy News	0	1156	Jun 3 06:55 2008 by Blobrana
Astronomers Weigh the Coldest Brown Dwarfs Astronomers have used ultrasharp images obtained with the Keck Telescope and Hubble Space Telescope to determine for the first time the masses of the coldest class of "failed stars," a.k.a. brown dwarfs. With masses as light as 3 percent the m...
Brown Dwarf 2MASS J16262034+3925190 (Preview)	Stars/galaxy News	2	1581	Apr 6 18:47 2009 by Blobrana
The Oldest Brown Dwarf Most of the halo stars previously known are members of stellar aggregates called globular clusters. Recently, however, large deep sky surveys have improved our knowledge on old halo stars living outside those clusters. Halo stars with masses from 10 times to only a few tenth...
Brown Dwarf CFBDS J005910.83-011401.3 (Preview)	Stars/galaxy News	2	1871	Apr 10 18:17 2008 by Blobrana
An international team of astronomers has discovered the coldest brown dwarf star ever observed. This finding, to be published in Astronomy & Astrophysics, is a new step toward filling the gap between stars and planets. An international team led by French and Canadian astronomers has just di...
Brown dwarf SSTB213 J041757 (Preview)	Stars/galaxy News	3	1470	Nov 30 17:58 2009 by Blobrana
The best proto-brown dwarf candidate so far A recent study has found the best proto-brown dwarf candidate known to date. Calar Alto has contributed key data to this finding. This object, known as SSTB213 J041757, is placed in the constellation of Taurus, inside the dark cloud Barnard 213, at a dista...
Brown dwarf SDSS J1416+13AB (Preview)	Stars/galaxy News	4	3706	Jan 30 22:36 2010 by Blobrana
Title: The discovery of a very cool binary system Authors: Ben Burningham, S. K. Leggett, P.W. Lucas, D.J. Pinfield, R.L. Smart, A.C. Day-Jones, H.R.A. Jones, D.Murray, E. Nickson, M. Tamura, Z. Zhang, N. Lodieu, C.G. Tinney, M. R. Zapatero Osorio We report the discovery of a very cool d/sdL7+T7.5...
Brown dwarf 2M J044144 (Preview)	Stars/galaxy News	2	2198	Apr 7 21:05 2010 by Blobrana
Mysterious planet-like object reveals its surprising identity A mysterious planet-like object orbiting a not-quite-starlike "brown dwarf" is the most recent enigma discovered by astronomers with their ever-more powerful telescopes. Kamen Todorov, a graduate student at Penn St...
Brown dwarf TWA 5A (Preview)	Stars/galaxy News	2	2866	Sep 5 23:42 2013 by Blobrana
Title: Orbital motion of the young brown dwarf companion TWA 5 B Authors: R. Neuhäuser (1), T. O. B. Schmidt (1), V. V. Hambaryan (1), N. Vogt (2 and 3) ((1) Astrophysikalisches Institut und Universitäts-Sternwarte, Jena, Germany, (2) Departamento de Física y Astronomía, Valparaíso, Chile, (3) U...
Brown Dwarf WISE WISEPC J045853.90+643451.9 (Preview)	Stars	2	2089	Nov 17 08:35 2010 by Blobrana
NASA's Wide-field Infrared Survey Explorer, or WISE, has eyed its first cool brown dwarf: a tiny, ultra-cold star floating all alone in space. WISE is scanning the whole sky in infrared light, picking up the glow of not just brown dwarfs but also asteroids, stars and galaxies. It has sent millions of...
Brown dwarf GJ569Bab (Preview)	Stars	0	1254	Dec 21 09:05 2010 by Blobrana
Title: Lucky Imaging Adaptive Optics of the brown dwarf binary GJ569Bab Authors: Autors: B. Femenía (1 and 2), R. Rebolo (1 and 3), J. A. Pérez-Prieto (1), S. R. Hildebrandt (1 and 4), L. Labadie (1 and 2), A. Pérez-Garrido (5), V. J. S. Béjar (1 and 2), A. Díaz-Sánchez (5), I. Villó (5), A. Oscoz (1), R. L...
Brown Dwarf CFBDSIR J1458+1013B (Preview)	Stars/galaxy News	4	4035	Apr 14 07:32 2011 by Blobrana
Title: CFBDSIR J1458+1013B: A Very Cold (>T10) Brown Dwarf in a Binary System Authors: Michael C. Liu, Philippe Delorme, Trent J. Dupuy, Brendan P. Bowler, Loic Albert, Etienne Artigau, Celine Reyle, Thierry Forveille, Xavier Delfosse We have identified CFBDSIR J1458+10 as a 0.11" bin...
WISE Brown dwarf WISE J0254+0223 and WISE J1741+2553 (Preview)	Stars	2	2915	Jul 16 12:46 2011 by Blobrana
Title: Two very nearby (d ~ 5 pc) ultracool brown dwarfs detected by their large proper motions from WISE, 2MASS, and SDSS data Authors: R.-D. Scholz, G. Bihain, O. Schnurr, J. Storm (Leibniz-Institut für Astrophysik Potsdam (AIP)) Aims: WISE provides an infrared all-sky survey which aims at comp...
Brown Dwarf 2MASS J05352184-0546085 (Preview)	Stars	0	984	Aug 2 08:56 2012 by Blobrana
Title: High-Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. II. Secondary Spectrum: No Evidence that Spots Cause the Temperature Reversal Authors: Subhanjoy Mohanty, Keivan G. Stassun We present high-resolution optical spectra of the youn...
Brown Dwarf Brown Dwarf Binaries (Preview)	Stars	0	884	Jun 17 04:52 2011 by Blobrana
Title: WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System Authors: Christopher R. Gelino (IPAC), J. Davy Kirkpatrick (IPAC), Michael C. Cushing (JPL), Peter R. Eisenhardt (JPL), Roger L. Griffith (IPAC), Amanda K. Mainzer (JPL), Kenneth A. Marsh (IPAC), Michael F. Skrutski...
Brown Dwarf Brown Dwarf Companions (Preview)	Stars/galaxy News	1	888	May 13 17:23 2015 by Blobrana
Title: Statistical Properties of Brown Dwarf Companions: Implications for Different Formation Mechanisms Authors: Bo Ma, Jian Ge The mass domain where massive extrasolar planets and brown dwarfs overlap is still poorly understood due to the paucity of brown dwarfs orbiting close to solar-typ...