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Millimeter- and Submillimeter-Wave Observations of the OMC-2/3 Region. III. An Extensive Survey for Molecular Outflows
Satoko Takahashi, Masao Saito, Nagayoshi Ohashi +5
Using the ASTE 10 m submillimeter telescope and the 1.4 m Infrared Survey Facility (IRSF), we performed an extensive outflow survey in the Orion Molecular Cloud -2 and -3 region. O…
Millimeter- and Submillimeter-Wave Observations of the OMC-2/3 Region. II. Observational Evidence for Outflow-Triggered Star Formation in the OMC-2 FIR 3/4 Region
Yoshito Shimajiri, Satoko Takahashi, Shigehisa Takakuwa +2
We have carried out the observations of the OMC-2 FIR 3/4 region with the NMA and ASTE in the HCO (1--0), CO (3--2, 1--0), SiO (=0, =2--1), CS (2--1), and…
The CO Molecular Outflows of IRAS 16293-2422 Probed by the Submillimeter Array
Sherry C. C. Yeh, Naomi Hirano, Tyler L. Bourke +4
We have mapped the proto-binary source IRAS 16293-2422 in CO 2-1, 13CO 2-1, and CO 3-2 with the Submillimeter Array (SMA). The maps with resolution of 1".5-5" reveal a single small…
Observations of chemical differentiation in clumpy molecular clouds
J. V. Buckle, S. D. Rodgers, E. S. Wirström +4
We have extensively mapped a sample of dense molecular clouds (L1512, TMC-1C, L1262, Per 7, L1389, L1251E) in lines of HC3N, CH3OH, SO and C^{18}O. We demonstrate that a high degre…
Arcsecond-Resolution Submillimeter HCN Imaging of the Binary Protostar IRAS 16293-2422
S. Takakuwa, N. Ohashi, T. Bourke +6
(Abridged) With the SMA we have made high angular-resolution (~1" = 160 AU) observations of the protobinary system IRAS 16293-2422 in the J = 4-3 lines of HCN and HC^15N, and in th…
High Resolution Imaging of Warm and Dense Molecular Gas in the Nuclear Region of the Luminous Infrared Galaxy NGC6240
D. Iono, C. Wilson, S. Takakuwa +7
We present ~2'' resolution CO(3-2), HCO+(4-3) and 880micron continuum images of the luminous infrared galaxy NGC6240 obtained at the Submillimeter Array. We find that the spatially…
PROSAC: A Submillimeter Array Survey of Low-Mass Protostars. I. Overview of Program: Envelopes, Disks, Outflows and Hot Cores
Jes K. Jorgensen, Tyler L. Bourke, Philip C. Myers +8
This paper presents a large spectral line and continuum survey of 8 deeply embedded, low-mass protostellar cores using the Submillimeter Array. Each source was observed in high exc…
ASTE Observations of Warm Gas in Low-mass Protostellar Envelopes: Different Kinematics between Submillimeter and Millimeter Lines
Shigehisa Takakuwa, Takeshi Kamazaki, Masao Saito +2
With the ASTE telescope, we have made observations of three low-mass protostellar envelopes around L483, B335, and L723 in the submillimeter CS (=7--6) and HCN (=4--3) lines.…
Millimeter- and Submillimeter-Wave Observations of the OMC-2/3 Region; I. Dispersing and Rotating Core around an Intermediate-mass Protostar MMS 7
Satoko Takahashi, Masao Saito, Shigehisa Takakuwa +1
We report the results of H13CO+(1-0), CO(1-0), and 3.3 mm dust continuum observations toward one of the strongest mm-wave sources in OMC-3, MMS 7, with the Nobeyama Millimeter Arra…
Kinematics of SiO J=8-7 Emission towards the HH 212 Jet
Michihiro Takami, Shigehisa Takamuwa, Munetake Momose +5
We present SiO J=8-7 (347.3 GHz) observations towards HH 212 using the ASTE telescope. Our observations with a 22''-diameter beam show that the SiO emission is highly concentrated…
Organic Molecules in the Hot Corinos and Circumstellar Disks of IRAS 16293-2422
H. -C. Huang, Y. -J. Kuan, S. B. Charnley +3
Using the recently-commissioned Submillimeter Array (SMA), we have detected several complex organic molecules, including (CH3)2O, C2H5OH, C2H5CN, and tentatively CH2CDCN, toward th…
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…
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…
Submillimeter Array Observations of CS J=14--13 Emission from the Evolved Star IRC+10216
K. H. Young, T. R. Hunter, D. J. Wilner +1
We present imaging observations of the evolved star IRC+10216 in the CS J=14--13 line at 685.4 GHz and associated submillimeter continuum at about 2'' resolution made with the part…
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…
Interaction between the Outflow and the Core in IRAM 04191+1522
Shigehisa Takakuwa, Nagayoshi Ohashi, Naomi Hirano
We have carried out mapping observations of the molecular core associated with the young Class 0 protostar, IRAM 04191+1522, in the CH3OH (JK=2K-1K) and C34S (J=2-1) lines using th…
Molecular Evolution in Collapsing Prestellar Cores
Y. Aikawa, N. Ohashi, S. Inutsuka +2
We have investigated the evolution and distribution of molecules in collapsing prestellar cores via numerical chemical models, adopting the Larson-Penston solution and its delayed…