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Related papers: Characterizing Outflows in the Cygnus X Region

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We have undertaken the largest survey for outflows within the Galactic Plane using simultaneously observed 13CO and C18O data. 325 out of a total of 919 ATLASGAL clumps have data suitable to identify outflows, and 225 (69+-3%) of them show…

Astrophysics of Galaxies · Physics 2018-09-05 Aiyuan Yang , Mark Thompson , James Urquhart , Wenwu Tian

We present Atacama Large Millimeter/submillimeter Array observations of the $\sim$10 kAU environment surrounding 21 protostars in the Orion A molecular cloud tracing outflows. Our sample is composed of Class 0 to flat-spectrum protostars,…

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

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 excitation lines of some of the most common molecular species,…

The formation of high-mass stars is usually accompanied by powerful protostellar outflows. Such high-mass outflows are not simply scaled-up versions of their lower-mass counterparts, since observations suggest that the collimation degree…

To shed light on the early phase of a low-mass protostar formation process, we conducted interferometric observations towards a protostar GF9-2 using the CARMA and SMA. The observations have been carried out in the CO J=3-2 line and in the…

Astrophysics of Galaxies · Physics 2022-10-05 Ray S. Furuya , Yoshimi Kitamura , Hiroko Shinnaga

Studies of molecular outflows in high-mass young stellar objects reveal important information about the formation process of massive stars. We therefore selected the close-by IRAS 17233-3606 massive star-forming region to perform SiO…

Astrophysics of Galaxies · Physics 2015-06-15 S. Leurini , C. Codella , A. Gusdorf , L. Zapata , A. Gomez-Ruiz , L. Testi , T. Pillai

Recent submillimeter observations have revealed signs of pc-scale molecular inflow and atomic outflow in the nearest Seyfert 2 galaxy, the Circinus galaxy. To verify the gas kinematics suggested by these observations, we performed molecular…

Astrophysics of Galaxies · Physics 2024-03-19 Shunsuke Baba , Keiichi Wada , Takuma Izumi , Yuki Kudoh , Kosei Matsumoto

Observations of outflows associated with pre-main-sequence stars reveal details about morphology, binarity and evolutionary states of young stellar objects. We present molecular line data from the Berkeley-Illinois-Maryland Association…

Astrophysics · Physics 2009-11-13 Brenda C. Matthews , James R. Graham , Marshall D. Perrin , Paul Kalas

We present (sub)millimeter line and continuum observations in a mosaicing mode of the massive star forming region Cepheus A East made with the Submillimeter Array (SMA). Our mosaic covers a total area of about 3$'$ $\times$ 12$'$ centered…

Astrophysics of Galaxies · Physics 2013-05-20 Luis A. Zapata , Manuel Fernandez-Lopez , Salvador Curiel , Nimesh Patel , Luis F. Rodriguez

We report here our latest search for molecular outflows from young brown dwarfs and very low-mass stars in nearby star-forming regions. We have observed three sources in Taurus with the Submillimeter Array and the Combined Array for…

Solar and Stellar Astrophysics · Physics 2015-06-22 Ngoc Phan-Bao , Chin-Fei Lee , Paul T. P. Ho , Cuong Dang-Duc , Di Li

We have carried out a near-infrared imaging survey of luminous young stellar outflow candidates using the United Kingdom Infrared Telescope. Observations were obtained in the broad band K (2.2 mu) and through narrow band filters at the…

Solar and Stellar Astrophysics · Physics 2015-05-18 Watson P. Varricatt , Christopher J. Davis , Suzanne Ramsay , Stephen P. Todd

A statistical study of the properties of molecular outflows is performed based on an up-to-date sample. 391 outflows were identified in published articles or preprints before February 28, 2003. The parameters of position, morphology, mass,…

Astrophysics · Physics 2009-11-10 Yuefang Wu , Yue Wei , Ming Zhao , Yong Shi , Wentao Yu , Shengli Qin , Maohai Huang

Observations of dense molecular gas lie at the basis of our understanding of the density and temperature structure of protostellar envelopes and molecular outflows. We aim to characterize the properties of the protostellar envelope,…

Solar and Stellar Astrophysics · Physics 2015-05-14 T. A. van Kempen , E. F. van Dishoeck , M. R. Hogerheijde , R. Guesten

We present an analysis of millimeter CO observations to search and quantify signatures of molecular gas outflows. We exploit the large sample of $0.5 < z < 2.6$ galaxies observed as part of the PHIBSS1/2 surveys with the IRAM Plateau de…

We present the results of CO ($J=3-2$) and HCO$^+$ ($J=4-3$) mapping observations toward a nearby embedded cluster, Serpens South, using the ASTE 10 m telescope. Our CO ($J=3-2$) map reveals that many outflows are crowded in the dense…

The detection of 1.809 MeV gamma-ray line emission from the Cygnus X complex by the COMPTEL telescope is one of the most convincing proves of massive star nucleosynthesis in our Galaxy. The Cygnus X complex is an extremely active nearby…

Astrophysics · Physics 2007-05-23 J. Knodlseder , M. Cervino , D. Schaerer , P. von Ballmoos , G. Meynet

We present sensitive high angular resolution ($\sim$ 1$"$) millimeter continuum and line observations from the massive star forming region DR21(OH) located in the Cygnus X molecular cloud. Within the well-known dusty MM1-2 molecular cores,…

Context. The relationship between outflow launching and formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spatially resolved observations are needed. Recently, the…

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