Bridging the Gap Between Stars and Planets: The Formation and Early Evolution of Brown Dwarfs (2009)
Mohanty, Subhanjoy, Burgasser, Adam, Chabrier, Gilles, Padoan, Paolo, Hennebelle, Patrick, Pascucci, Ilaria, ...
This White Paper, submitted to the National Academy of Sciences' Astro2010 Decadal Review Committee, focuses on 2 central themes in the study of young brown dwarfs -- their formation mechanism and...
Toward the End of Stars: Discovering the Galaxy's Coldest Brown Dwarfs (2009)
Burgasser, Adam J., Bloom, Josh, Cruz, Kelle, Cushing, Michael, Leggett, Sandy, Lodders, Katharina, ...
This White Paper to the National Academy of Sciences Astro2010 Decadal Review Committee highlights cross-disciplinary science opportunities over the next decade with cold brown dwarfs, sources...
Tanner, Angelle, Beichman, Charles, Akeson, Rachel, Ghez, Andrea, Grankin, Konstantin N., Herbst, William, ...
We present a review of precursor observing programs for the SIM PlanetQuest Key project devoted to detecting Jupiter mass planets around young stars. In order to ensure that the stars in the sample...
Mohanty, Subhanjoy, Shu, Frank H.
Previous analyses of magnetospheric accretion and outflow in classical T Tauri stars (CTTSs), within the context of both the X-wind model and other theoretical scenarios, have assumed a dipolar...
The Challenge of Sub-Keplerian Rotation for Disk Winds (2008)
Shu, Frank H., Lizano, Susana, Galli, Daniele, Cai, Mike J., Mohanty, Subhanjoy
Strong magnetization makes the disks surrounding young stellar objects rotate at rates that are too sub-Keplerian to enable the thermal launching of disk winds from their surfaces unless the rate of...
Tanner, Angelle, Beichman, Charles, Akeson, Rachel, Ghez, Andrea, Grankin, Konstantin N., Herbst, William, ...
We present a review of precursor observing programs for the SIM PlanetQuest Key project devoted to detecting Jupiter mass planets around young stars. In order to ensure that the stars in the sample...
A New Population of Young Brown Dwarfs (2007)
Cruz, Kelle L., Kirkpatrick, J. Davy, Burgasser, Adam J., Looper, Dagny, Mohanty, Subhanjoy, Prato, Lisa, ...
We report the discovery of a population of late-M and L field dwarfs with unusual optical and near-infrared spectral features that we attribute to low gravity -- likely uncommonly young, low-mass...
Mohanty, Subhanjoy, Jayawardhana, Ray, Huelamo, Nuria, Mamajek, Eric
We present J-band imaging and H+K-band low-resolution spectroscopy of 2MASS1207-3932 AB, obtained with VLT NACO. For the putative planetary mass secondary, we find J = 20.0+/-0.2 mag. The HK spectra...
A Large Scale Survey of NGC1333 (2006)
Walsh, Andrew J., Myers, Philip C., Di Francesco, James, Mohanty, Subhanjoy, Bourke, Tyler L., Gutermuth, Robert, ...
We observed the clustered star forming complex NGC1333 with the BIMA and FCRAO telescopes in the transitions HCO+(1-0) and N2H+(1-0) over an 11'x11' area with resolution ~10" (0.015pc). The N2H+...
Reiners, Ansgar, Basri, Gibor, Mohanty, Subhanjoy
We report the discovery of a new low-mass spectroscopic (SB2) stellar binary system in the star-forming region of Upper Scorpius. This object, UScoCTIO5, was discovered by Ardila (2000), who assigned...
Mohanty, Subhanjoy, Jayawardhana, Ray, Basri, Gibor
Using the largest high-resolution spectroscopic sample to date of young, very low mass stars (VLMS) and brown dwarfs (BDs), we investigate disk accretion in objects ranging from just above the...
Formation and Evolution of Very Low Mass Stars and Brown Dwarfs (2004)
Eisloeffel, Jochen, Mohanty, Subhanjoy, Scholz, Alexander
The formation and evolution of brown dwarfs are currently "hot topics" in cool star research. Latest observations and modeling efforts on disks, accretion, outflows, spatial distribution, and...
Flared Disks and Silicate Emission in Young Brown Dwarfs (2004)
Mohanty, Subhanjoy, Jayawardhana, Ray, Natta, Antonella, Fujiyoshi, Takuya, Tamura, Motohide, Navascues, David Barrado Y
We present mid-infrared photometry of three very young brown dwarfs located in the $\rho$ Ophiuchi star-forming region -- GY5, GY11 and GY310 --obtained with the Subaru 8-meter telescope. All three...
Measuring Fundamental Parameters of Substellar Objects. I: Surface Gravities (2004)
Mohanty, Subhanjoy, Basri, Gibor, Jayawardhana, Ray, Allard, France, Hauschildt, Peter, Ardila, David
(abridged) We present an analysis of high resolution optical spectra for a sample of very young, mid- to late M, low-mass stellar and substellar objects in Upper Sco and Taurus. Effective...
Measuring Fundamental Parameters of Substellar Objects. II: Masses and Radii (2004)
Mohanty, Subhanjoy, Jayawardhana, Ray, Basri, Gibor
We present mass and radius derivations for a sample of very young, mid- to late M, low-mass stellar and substellar objects in Upper Sco and Taurus. In a previous paper, we determined effective...
Accretion and Outflow in the Substellar Domain: Magellan Spectroscopy of LS-RCrA 1 (2003)
Navascues, David Barrado Y, Mohanty, Subhanjoy, Jayawardhana, Ray
We present low-, medium-, and high-resolution optical spectra of LS-RCrA~1. We confirm both pre-main sequence status and membership, through the detection of lithium, presence of narrow potassium...
Magellan Echelle Spectroscopy of TW Hydrae Brown Dwarfs (2003)
Mohanty, Subhanjoy, Jayawardhana, Ray, Navascues, David Barrado Y
We present high-resolution optical spectroscopy of four candidate members of the nearby TW Hydrae young association including three brown dwarfs (2MASS 1207-3932, 2MASS 1139-3159 and TWA 5B) and one...
Observational Clues to Brown Dwarf Origins (2003)
Jayawardhana, Ray, Mohanty, Subhanjoy, Basri, Gibor, Ardila, David R., Stelzer, Beate, Haisch Jr, Karl E.
Over the past year, we have conducted a multi-faceted program to investigate the origin and early evolution of brown dwarfs. Using high-resolution Keck optical spectra of ~30 objects near and below...
Evidence for a T Tauri Phase in Young Brown Dwarfs (2003)
Jayawardhana, Ray, Mohanty, Subhanjoy, Basri, Gibor
As part of a multi-faceted program to investigate the origin and early evolution of sub-stellar objects, we present high-resolution Keck optical spectra of 14 very low mass sources in the IC 348...
Probing Disk Accretion in Young Brown Dwarfs (2002)
Jayawardhana, Ray, Mohanty, Subhanjoy, Basri, Gibor
We present high-resolution optical spectra of 15 objects near or below the sub-stellar limit in the Upper Scorpius and $\rho$ Ophiuchus star-forming regions. These spectra, obtained with the HIRES...
Activity in Very Cool Stars: Magnetic Dissipation in late-M and L Dwarf Atmospheres (2002)
Mohanty, Subhanjoy, Basri, Gibor, Shu, Frank, Allard, France, Chabrier, Gilles
Recent observations show that chromospheric activity in late-M and L dwarfs is much lower than in the earlier M types, in spite of comparatively rapid rotation. We investigate the possibility that...
Rotation and Activity in Mid-M to L Dwarfs (2002)
Mohanty, Subhanjoy, Basri, Gibor
We analyze rotation velocities and chromospheric (H-alpha) activity, derived from multi-year, high-resolution spectra, in 56 mid-M to L dwarfs. Rotational velocities are found to increase from mid-M...
Low-mass ultra-cool dwarfs : atmospheres, rotation and magnetic activity / (2002)
Thesis (Ph. D. in Astrophysics)--University of California, Berkeley, Spring 2002.
Basri, Gibor, Mohanty, Subhanjoy, Allard, France, Hauschildt, Peter H., Delfosse, Xavier, Martin, Eduardo L., ...
We present Keck HIRES spectra of 6 late-M dwarfs and 11 L dwarfs. Our goal is to assign effective temperatures to the objects using detailed atmospheric models and fine analysis of the alkali...
Junior tutorial paper (Astronomy 98 HF)--Harvard University, 1994.