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… 

Figures from this paper

A survey for planetary-mass brown dwarfs in the Chamaeleon I star-forming region
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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*
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
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
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
...
...