Discovery of a Planetary-Mass Brown Dwarf with a Circumstellar Disk
@article{Luhman2005DiscoveryOA, title={Discovery of a Planetary-Mass Brown Dwarf with a Circumstellar Disk}, author={K. L. Luhman and Lucia Adame and Paola d’Alessio and Nuria Calvet and Lee Hartmann and S. Thomas Megeath and Giovanni G. Fazio}, journal={The Astrophysical Journal}, year={2005}, volume={635} }
Using the Hubble Space Telescope, the 4 m Blanco Telescope at the Cerro Tololo Inter-American Observatory, and the Spitzer Space Telescope, we have performed deep imaging from 0.8 to 8 μm of the southern subcluster in the Chamaeleon I star-forming region. In these data, we have discovered an object, Cha 110913-773444, whose colors and magnitudes are indicative of a very low mass brown dwarf with a circumstellar disk. In a near-infrared spectrum of this source obtained with the Gemini Near…
81 Citations
A survey for planetary-mass brown dwarfs in the Chamaeleon I star-forming region
- Physics, Geology
- 2017
We have performed a search for planetary-mass brown dwarfs in the Chamaeleon I star-forming region using proper motions and photometry measured from optical and infrared images from the Spitzer Space…
Young, Low-Mass Brown Dwarfs with Mid-Infrared Excesses
- Physics, Geology
- 2006
We have combined new I, J, H, and Ks imaging of portions of the Chamaeleon II, Lupus I, and Ophiuchus star-forming clouds with 3.6-24 ?m imaging from the Spitzer legacy program From Molecular Cores…
Spectroscopy of Young Planetary Mass Candidates with Disks
- Physics, Geology
- 2006
It is now well established that many young brown dwarfs exhibit characteristics similar to classical T Tauri stars, including infrared excess from disks and emission lines related to accretion.…
New Low-Mass Stars and Brown Dwarfs with Disks in the Chamaeleon I Star-Forming Region
- Physics, Geology
- 2008
We have used images obtained with the Infrared Array Camera and the Multiband Imaging Photometer on board the Spitzer Space Telescope to search for low-mass stars and brown dwarfs with circumstellar…
A proto brown dwarf candidate in Taurus
- Physics
- 2009
Aims. We search for brown dwarfs at the Class 0/I evolutionary stage, or proto brown dwarfs.
Methods. We present a multi wavelength study, ranging from optical at 0.8 μm to radio wavelengths at 6…
DISCOVERY OF A YOUNG SUBSTELLAR COMPANION IN CHAMAELEON
- Physics, Geology
- 2006
During an imaging survey of the Chamaeleon I star-forming region with the Advanced Camera for Surveys aboard the Hubble Space Telescope, we have discovered a candidate substellar companion to the…
DEEP NEAR-INFRARED IMAGING OF THE ρ Oph CLOUD CORE: CLUES TO THE ORIGIN OF THE LOWEST-MASS BROWN DWARFS
- Physics
- 2010
A search for young substellar objects in the ρ Oph cloud core region has been made with the aid of multiband profile-fitting point-source photometry of the deep-integration Combined Calibration Scan…
Spectroscopic Confirmation of Young Planetary-mass Companions on Wide Orbits
- Physics, Geology
- 2014
We present moderate-resolution (R ~ 4000-5000) near-infrared integral field spectroscopy of the young (1-5 Myr) 6-14 M_(Jup) companions ROXs 42B b and FW Tau b obtained with Keck/OSIRIS and…
A mid-infrared study of very low mass stars and brown dwarfs in Upper Scorpius
- Physics, Geology
- 2007
Context. To investigate the formation of sub-stellar objects, we observed a sample of ultracool dwarf members of the Upper Scorpius OB association. Aims. The properties of disks, such as their…
Dusty Disks at the Bottom of the Initial Mass Function
- Physics, Geology
- 2008
Isolated planetary-mass objects (IPMOs) have masses close to or below the deuterium-burning mass limit (∼ )—at the bottom of the stellar initial mass function . We present an exploratory survey for…
References
SHOWING 1-10 OF 33 REFERENCES
SPITZER IDENTIFICATION OF THE LEAST MASSIVE KNOWN BROWN DWARF WITH A CIRCUMSTELLAR DISK
- Physics, Geology
- 2005
Using the Infrared Array Camera (IRAC) aboard the Spitzer Space Telescope, we have obtained mid-infrared photometry of the least massive known brown dwarf in the Chamaeleon I star-forming region. For…
A Young Star near the Hydrogen-burning Limit
- Physics
- 1998
We show that V410 X-ray 3, toward the L1495E star-forming complex, is an object with a mass of 0.08-0.15 M☉ and an age of ~1 Myr. Nonetheless, it has emerged from its natal cloud and can be studied…
Infrared Spectroscopy of Substellar Objects in Orion
- Physics, Geology
- 2001
We present broad band spectra of a sample of 21 low luminosity sources in the Trapezium Cluster, with masses in the range 0.008 - 0.10 M⊙ (assuming an age of 1 Myr). These were selected for low…
The truncated disk of CoKu Tau/4
- Physics, Geology
- 2004
We present a model of a dusty disk with an inner hole that accounts for the Spitzer Space Telescope Infrared Spectrograph observations of the low-mass pre-main-sequence star CoKu Tau/4. We have…
A Hubble Space Telescope search for substellar companions in the young cluster IC 348
- Physics, Geology
- 2005
We present the results of a search for substellar companions to members of the star-forming cluster IC 348. Using the Wide Field Planetary Camera 2 on board the Hubble Space Telescope, we have…
The Initial Mass Function of Low-Mass Stars and Brown Dwarfs in Taurus
- Physics
- 2000
By combining deep optical imaging and infrared spectroscopy with data from the Two-Micron All-Sky Survey (2MASS) and from previous studies (e.g., Briceno et al.), I have measured the initial mass…
Spectroscopic Confirmation of the Least Massive Known Brown Dwarf in Chamaeleon
- Physics, Geology
- 2004
We present spectroscopy of two candidate substellar members of the Chamaeleon I star-forming region. The candidates, which were identified photometrically by Oasa, Tamura, & Sugitani, have been…
The Initial Mass Function in the Taurus Star-forming Region*
- Physics, Geology
- 2002
By combining a deep optical imaging (I; z 0 ) survey of 8 deg 2 in the Taurus star-forming region with data from the Two-Micron All-Sky Survey (2MASS) and follow-up spectroscopy, we have performed a…
Evolutionary Models for Very Low-Mass Stars and Brown Dwarfs with Dusty Atmospheres
- Physics, Geology
- 2000
We present evolutionary calculations for very low-mass stars and brown dwarfs based on synthetic spectra and nongray atmosphere models which include dust formation and opacity, i.e., objects with…
A Nongray Theory of Extrasolar Giant Planets and Brown Dwarfs
- Physics, Geology
- 1997
We present the results of a new series of nongray calculations of the atmospheres, spectra, colors, and evolution of extrasolar giant planets (EGPs) and brown dwarfs for effective temperatures below…