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We present a multiwavelength investigation of a region of a nearby giant molecular cloud that is distinguished by a minimal level of star formation activity. With our new 12CO(J=2-1) and 13CO(J=2-1) observations of a remote region within…

Astrophysics of Galaxies · Physics 2017-05-24 Nia Imara , Charles Lada , John Lewis , John H. Bieging , Shuo Kong , Marco Lombardi , Joao Alves

We report interferometric observations of the VeLLO L1521F-IRS, in 12CO (2-1) line emission and the 1.3 mm continuum emission, using the Submillimeter Array (SMA). With the 12CO high-resolution observations, we have spatially resolved a…

Astrophysics of Galaxies · Physics 2015-06-16 Satoko Takahashi , Nagayoshi Ohashi , Tyler Bourke

We present ALMA follow-up observations of two massive, early-stage core candidates, C1-N & C1-S, in Infrared Dark Cloud (IRDC) G028.37+00.07, which were previously identified by their N2D+(3-2) emission and show high levels of deuteration…

Astrophysics of Galaxies · Physics 2016-04-20 Jonathan C. Tan , Shuo Kong , Yichen Zhang , Francesco Fontani , Paola Caselli , Michael J. Butler

Protostellar outflows are one of the most outstanding features of star formation. Observational studies over the last several decades have successfully demonstrated that outflows are ubiquitously associated with low- and high-mass…

Changing physical conditions in the vicinity of protostars allow for a rich and interesting chemistry to occur. Heating and cooling of the gas allows molecules to be released from and frozen out on dust grains. These changes in physics,…

Astrophysics of Galaxies · Physics 2016-03-09 P. Bjerkeli , J. K. Jørgensen , C. Brinch

We have searched for massive molecular outflows in a sample of high-mass star forming regions, and we have characterised both the outflow properties and those of their associated molecular clumps. With a sample composed largely of more…

Astrophysics of Galaxies · Physics 2015-05-13 A. Lopez-Sepulcre , C. Codella , R. Cesaroni , N. Marcelino , C. M. Walmsley

We present the first maps of high-excitation CO J=6-5 and 7-6 and isotopologue lines over 2'-5' regions at 10" resolution toward low-mass protostars to probe the origin of the warm gas in their surroundings. The data were obtained using the…

Astrophysics of Galaxies · Physics 2009-09-22 Ewine F. van Dishoeck , Tim A. van Kempen , Rolf Guesten

We present molecular line imaging observations of three massive molecular outflow sources, G333.6-0.2, G333.1-0.4, and G332.8-0.5, all of which also show evidence for infall, within the G333 giant molecular cloud (GMC). All three are within…

Astrophysics of Galaxies · Physics 2015-09-14 N. Lo , B. Wiles , M. P. Redman , M. R. Cunningham , I. Bains , P. A. Jones , M. G. Burton , L. Bronfman

We present deep IRAC images that highlight the scattered light emission around many of the youngest protostars, the so-called Class 0 sources, in L1448. By comparison of the data with a Monte Carlo radiative transfer code…

Astrophysics · Physics 2011-02-11 John J. Tobin , Leslie W. Looney , Lee G. Mundy , Woojin Kwon , Murad Hamidouche

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 scale (~3000 AU) bipolar molecular outflow along the…

We present CARMA CO (J=1-0) observations and Herschel PACS spectroscopy, characterizing the outflow properties toward extremely young and deeply embedded protostars in the Orion molecular clouds. The sample comprises a subset of the Orion…

The link between the circum-galactic medium (CGM) and the stellar growth of massive galaxies at high-$z$ depends on the properties of the widespread cold molecular gas. As part of the SUPERCOLD-CGM survey (Survey of Protocluster ELANe…

The feedback from galactic outflows is thought to play an important role in shaping the gas content, star formation history, and ultimately the stellar mass function of galaxies. Here we present evidence for massive molecular outflows…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Aeree Chung , Min S. Yun , Gopal Naraynan , Mark Heyer , Neal R. Erickson

We present observations of outflows in the star-forming region NGC 1333 using the Combined Array for Research in Millimeter-Wave Astronomy (CARMA). We combined the 12CO and 13CO (1-0) CARMA mosaics with data from the 14-m Five College Radio…

Solar and Stellar Astrophysics · Physics 2015-06-16 Adele L. Plunkett , Hector G. Arce , Stuartt A. Corder , Diego Mardones , Anneila I. Sargent , Scott L. Schnee

We have searched the L1340 A, B, and C clouds for shocks from protostellar outflows using the H$_2$ 2.122 $\mu$m near-IR line as a shock tracer. Substantial outflow activity has been found in each of the three regions of the cloud (L1340 A,…

Solar and Stellar Astrophysics · Physics 2016-12-14 Josh Walawender , Grace Wolf-Chase , Michael Smutko , JoAnn O'Linger-Luscusk , Gerald Moriarty-Schieven

Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly high density and…

Solar and Stellar Astrophysics · Physics 2015-06-24 Adele L. Plunkett , Hector G. Arce , Stuartt A. Corder , Michael M. Dunham , Guido Garay , Diego Mardones

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 report the arcsecond resolution SMA observations of the $^{12}$CO (2-1) transition in the massive cluster forming region G10.6-0.4. In these observations, the high velocity $^{12}$CO emission is resolved into individual outflow systems,…

Solar and Stellar Astrophysics · Physics 2015-05-20 Hauyu Baobab Liu , Paul T. P. Ho , Qizhou Zhang

We present 0".97 $\times$ 0".53 (470 pc $\times$ 250 pc) resolution CO ($J$ = 2-1) observations toward the nearby luminous merging galaxy NGC 6240 with the Atacama Large Millimeter/submillimeter Array. We confirmed a strong CO concentration…

Astrophysics of Galaxies · Physics 2018-02-14 T. Saito , D. Iono , J. Ueda , D. Espada , K. Sliwa , K. Nakanishi , N. Lu , C. K. Xu , T. Michiyama , H. Kaneko , T. Yamashita , M. Ando , M. S. Yun , K. Motohara , R. Kawabe

Using the Caltech Submillimeter Observatory 10.4-meter telescope, we performed sensitive mapping observations of 12CO J=7-6 emission at 807 GHz towards Orion IRc2. The image has an angular resolution of 10", which is the highest angular…

Astrophysics of Galaxies · Physics 2015-05-13 Ray S. Furuya , Hiroko Shinnaga