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Gas and dust mass in the disk around the Herbig Ae star HD169142
Olja Panić, Michiel R. Hogerheijde, David Wilner +1
We investigate the physical structure of the gas component of the disk around the pre-main-sequence star HD169142. The 13CO and C18O J=2-1 line emission is observed from the disk w…
The Structure of the DoAr 25 Circumstellar Disk
Sean M. Andrews, A. M. Hughes, D. J. Wilner +1
We present high spatial resolution (< 0.3" = 40$ AU) Submillimeter Array observations of the 865 micron continuum emission from the circumstellar disk around the young star DoAr 25…
Proplyds and Massive Disks in the Orion Nebula Cluster Imaged with CARMA and SMA
J. A. Eisner, R. L. Plambeck, John M. Carpenter +3
[Abridged] We imaged a 2' x 2' region of the Orion Nebula cluster in 1.3 mm wavelength continuum emission with the recently commissioned Combined Array for Research in Millimeter A…
Resolving the chemistry in the disk of TW Hydrae I. Deuterated species
C. Qi, D. J. Wilner, Y. Aikawa +2
We present Submillimeter Array (SMA) observations of several deuterated species in the disk around the classical T Tauri star TW Hydrae at arcsecond scales, including detections of…
Gas and Dust Emission at the Outer Edge of Protoplanetary Disks
A. M. Hughes, D. J. Wilner, C. Qi +1
We investigate the apparent discrepancy between gas and dust outer radii derived from millimeter observations of protoplanetary disks. Using 230 and 345 GHz continuum and CO J=3-2…
On the Diversity of the Taurus Transitional Disks: UX Tau A & Lk Ca 15
C. Espaillat, N. Calvet, P. D'Alessio +5
The recently recognized class of "transitional disk" systems consists of young starswith optically-thick outer disks but inner disks which are mostly devoid of small dust. Here we…
Millimeter imaging of HD 163296: probing the disk structure and kinematics
A. Isella, L. Testi, A. Natta +3
We present new multi-wavelength millimeter interferometric observations of the Herbig Ae star HD 163296 obtained with the IRAM/PBI, SMA and VLA arrays both in continuum and in the…
Organic Molecules in Low-Mass Protostellar Hot Cores: Submillimeter Imaging of IRAS 16293-2422
Y. -J. Kuan, H. -C. Huang, S. B. Charnley +8
Arcsecond-resolution spectral observations toward the protobinary system IRAS 16293-2422 at 344 and 354 GHz were conducted using the Submillimeter Array. Complex organic molecules…
A New Probe of the Planet-Forming Region in T Tauri Disks
Edwin A. Bergin, Nuria Calvet, Michael L. Sitko +9
We present new observations of the FUV (1100-2200 Angstrom) radiation field and the near- to mid-IR (3--13.5 micron) spectral energy distribution (SED) of a sample of T Tauri stars…
High velocity bipolar outflow and disk-like envelope in the carbon star V Hya
Naomi Hirano, Hiroko Shinnaga, Dinh-V-Trung +7
Using the partially completed Submillimeter Array with five antennas, we have observed the CO J=2-1 and 3-2 emission from the envelope surrounding the carbon star V Hya. The high-a…
Submillimeter Array Observations of L1551 IRS 5 in CS (J=7-6)
Shigehisa Takakuwa, Nagayoshi Ohashi, Paul T. P. Ho +7
We have imaged the circumstellar envelope around the binary protostar L1551 IRS 5 in CS (J=7-6) and 343 GHz continuum emission at ~ 3 arcsec resolution using the Submillimeter Arra…
Imaging the Disk around TW Hya with the Submillimeter Array
C. Qi, P. T. P. Ho, D. J. Wilner +10
We present ~2"-4" aperture synthesis observations of the circumstellar disk surrounding the nearby young star TW Hya in the CO J=2--1 and J=3--2 lines and associated dust continuum…
Combined BIMA and OVRO observations of comet C/1999 S4 (LINEAR)
M. R. Hogerheijde, I. de Pater, M. Wright +12
We present results from an observing campaign of the molecular content of the coma of comet C/1999 S4 (LINEAR) carried out jointly with the millimeter-arrays of the Berkeley-Illino…
Continuum and CO/HCO+ Emission from the Disk Around the T Tauri Star LkCa 15
Chunhua Qi, Jacqueline E. Kessler, David W. Koerner +2
We present OVRO Millimeter Array lambda = 3.4 - 1.2 mm dust continuum and spectral line observations of the accretion disk encircling the T Tauri star LkCa 15. The 1.2 mm dust cont…
Interferometric Observations of Formaldehyde in the Protoplanetary Disk around LkCa15
Yuri Aikawa, Munetake Momose, Wing-Fai Thi +4
Emission from the line of HCO has been detected and marginally resolved toward LkCa15 by the Nobeyama Millimeter Array. The column density of HCO is higher…
Spectral Energy Distributions of T Tauri and Herbig Ae Disks: Grain Mineralogy, Parameter Dependences, and Comparison with ISO LWS Observations
E. I. Chiang, M. K. Joung, M. J. Creech-Eakman +4
We improve upon the radiative, hydrostatic equilibrium models of passive circumstellar disks constructed by Chiang & Goldreich (1997). New features include (1) account for a range…