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Related papers: Multiple Bipolar Molecular Outflows in the L1551 I…

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We present results of 1.3mm interferometric and single-dish observations of the center of the L1641-N cluster in Orion. Single-dish wide-field continuum and CO(2-1) observations reveal the presence of several molecular outflows driven by…

Astrophysics · Physics 2008-11-26 Thomas Stanke , Jonathan P. Williams

We present high-resolution, long-slit spectroscopic observations of five compact ($\leq$ 10 arcsec) planetary nebulae located close to the galactic bulge region and for which no high spatial resolution images are available. The data have…

Solar and Stellar Astrophysics · Physics 2015-06-05 S. Akras , J. A. López

New JCMT HARP CO 3-2 observations of the W5 star forming complex are presented, totaling an area of 12000 arcmin^2 with sensitivity better than 0.1 K per 0.4 km/s channel. We discovered 55 CO outflow candidates, of which 40 are associated…

Astrophysics of Galaxies · Physics 2015-05-28 Adam Ginsburg , John Bally , Jonathan Williams

We present combined SubMillimeter Array (SMA) + Atacama Submillimeter Telescope Experiment (ASTE) images of the Class I protobinary L1551 IRS 5 in the CS ($J$ = 7--6) line, the submillimeter images of L1551 IRS 5 with the most complete…

Solar and Stellar Astrophysics · Physics 2015-06-23 Ti-Lin Chou , Shigehisa Takakuwa , Hsi-Wei Yen , Nagayoshi Ohashi , Paul T. P. Ho

We investigate the surroundings of the hypercompact HII region M17 UC1 to probe the physical properties of the associated young stellar objects and the environment of massive star formation. Five of the seven point sources in this region…

Astrophysics of Galaxies · Physics 2015-06-10 Zhiwei Chen , Dieter E. A. Nuernberger , Rolf Chini , Zhibo Jiang , Min Fang

We report new results based on the analysis of the SMA and CARMA observations of NGC 7538\,IRS\,1 at 1.3 and 3.4 mm with sub-arcsec resolutions. With angular resolutions $\sim$ 0\farcs7, the SMA and CARMA observations show that the…

Solar and Stellar Astrophysics · Physics 2019-08-19 Lei Zhu , Jun-Hui Zhao , Melvyn Wright , Göran Sandell , Hui Shi , Yue-Fang Wu , Crystal Brogan , Stuartt Corder

Molecular outflows are believed to be a key ingredient in the process of star formation. The molecular outflow associated with DR21 Main in Cygnus-X is one of the most extreme, in mass and size, molecular outflows in the Milky Way. The…

We present high angular resolution observations toward two massive star forming regions IRAS 18264-1152 and IRAS 23151+5912 with the Plateau de Bure Interferometer (PdBI) in the SiO (J=2-1) and H$^{13}$CO$^{+}$ (J=1-0) lines and at 1.3 mm…

Astrophysics · Physics 2008-11-26 Keping Qiu , Qizhou Zhang , Henrik Beuther , Ji Yang

We present an observational study towards the young high-mass star forming region G23.44-0.18 using the Submillimeter Array. Two massive, radio-quiet dusty cores MM1 and MM2 are observed in 1.3 mm continuum emission and dense molecular gas…

Solar and Stellar Astrophysics · Physics 2015-05-28 Jeremy Zhiyuan Ren , Tie Liu , Yuefang Wu , Lixin Li

We present 12CO (J=2-1) sensitive molecular line and 1.3 mm continuum observations made with the Submillimeter Array (SMA) of the bipolar outflow associated with the young star located in the Bok globule known as CB 26. The SMA observations…

Solar and Stellar Astrophysics · Physics 2023-03-01 J. A. López-Vázquez , Luis A. Zapata , Chin-Fei Lee

The mid-infrared emission at the center of IRAS 21026+4104 is not that of a simple compact source, as one would expect from an isolated high mass protostellar object. Furthermore the central thermal infrared emission does not appear to be…

Astrophysics · Physics 2009-11-11 James M. De Buizer

We present high angular resolution Very Large Array multi-epoch continuum observations at 3.6 cm and 7 mm towards the core of the L723 multipolar outflow revealing a multiple system of four radio sources suspected to be YSOs in a region of…

$Aims.$ We study the relation between the jet and the outflow in the IRAS 04166+2706 protostar. This Taurus protostar drives a molecular jet that contains multiple emission peaks symmetrically located from the central source. The protostar…

Astrophysics of Galaxies · Physics 2017-01-18 M. Tafalla , Y. -N. Su , H. Shang , D. Johnstone , Q. Zhang , J. Santiago-Garcia , C. -F. Lee , N. Hirano , L. -Y. Wang

The NGC 1333 region was observed in the H2 1-0 S(1) line. The H2 images cover a 5' x 7' region around IRAS 4. Numerous H2 emission features were detected. The northeast-southwest bipolar outflow driven by IRAS 4A was studied by combining…

Sensitive and high angular resolution ($\sim$ $0\rlap.{"}7$) (sub)millimeter line and continuum observations of the massive star forming region W3(OH) made with the Submillimeter Array are presented. We report the first detection of two…

Astrophysics of Galaxies · Physics 2015-05-30 Luis A. Zapata , Carolina Rodríguez-Garza , Luis F. Rodríguez , Josep M. Girart , Huei-Ru Chen

For a binary protostellar outflow system in which its members are located so close to each other (the separation being smaller than the addition of the widths of the flows) and with large opening angles, the collision seems unavoidable…

Young protostars that undergo episodic accretion can provide insight into the impact on their circumstellar environments while matter is accreted from the disk onto the protostar. IRAS 22343+7501 is a four component protostar system with…

We present molecular-line observations toward the dense core in L483 and its bipolar outflow powered by the Class 0 object IRAS 18148-0440. CO (carbon monoxide) maps show that the outflow is well collimated and asymmetric, and that its gas…

Astrophysics · Physics 2007-05-23 M. Tafalla , P. C. Myers , D. Mardones , R. Bachiller

We present sensitive high angular resolution (0.57$''$-0.78$''$) SO, SO$_2$, CO, C$_2$H$_5$OH, HC$_3$N, and HCOCH$_2$OH line observations at millimeter and submillimeter wavelengths of the young O-type protostar W51 North made with the…

Astrophysics of Galaxies · Physics 2015-05-20 Luis A. Zapata , Ya-Wen Tang , Silvia Leurini

We performed Herschel observations of the continuum and line emission from the high-mass star-forming region IRAS20126+4104, which hosts a well-studied B-type (proto)star powering a bipolar outflow and is associated with a Keplerian…

Solar and Stellar Astrophysics · Physics 2023-03-22 R. Cesaroni , F. Faustini , D. Galli , A. Lorenzani , S. Molinari , L. Testi