English
Related papers

Related papers: SMA CO(2-1) Observations of CG30: A Protostellar B…

200 papers

We present archive Atacama Large Millimeter/Submillimeter Array (ALMA) Band 6 observations of the $^{13}$CO (J=2-1) and $^{12}$CO (J=2-1) molecular line emission of the protostellar system associated with HH 30. The $^{13}$CO molecular line…

Solar and Stellar Astrophysics · Physics 2023-12-11 J. A. López-Vázquez , Chin-Fei Lee , M. Fernández-López , Fabien Louvet , O. Guerra-Alvarado , Luis A. Zapata

We report high angular-resolution (~1") CO J=3--2 interferometric mapping, using the Submillimeter Array (SMA), of IRAS22036+5306 (I22036), a bipolar pre-planetary nebula (PPN) with knotty jets discovered in our HST SNAPshot survey of young…

Astrophysics · Physics 2008-11-26 R. Sahai , K. Young , N. A. Patel , C. S'anchez Contreras , M. Morris

We present Very Large Array C, X, and Q-band continuum observations, as well as 1.3 mm continuum and CO(2-1) observations with the Submillimeter Array toward the high-mass protostellar candidate ISOSS J23053+5953 SMM2. Compact cm continuum…

Astrophysics of Galaxies · Physics 2021-09-06 T. M. , Rodríguez , P. Hofner , E. D. Araya , Q. Zhang , H. Linz , S. Kurtz , L. Gómez , C. Carrasco-González , V. Rosero

The disk-outflow connection is thought to play a key role in extracting excess angular momentum from a forming protostar. We present ALMA 0.25" angular resolution observations - in the dust continuum at 1.33 mm and of the molecular line…

We present the results of ALMA observations toward the low-mass Class-0 binary system, VLA 1623Aab in the Ophiuchus molecular cloud in $^{12}$CO, $^{13}$CO, and C$^{18}$O(2--1) lines. Our $^{12}$CO ($J$=2--1) data reveal that the VLA 1623…

Context. This is the third of a series of papers devoted to study in detail and with high-angular resolution intermediate-mass molecular outflows and their powering sources. Aims. The aim of this paper is to study the intermediate-mass YSO…

Astrophysics · Physics 2009-11-13 M. T. Beltran , R. Estalella , J. M. Girart , P. T. P. Ho , G. Anglada

We present ALMA observations of the $^{12}$CO, $^{13}$CO, C$^{18}$O J=2-1 transitions and the 1.3\,mm continuum emission for the circumbinary disc around HD 142527, at an angular resolution of $\approx$\,0\farcs3. We observe multiple spiral…

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

The field just West of the galactic supernova remnant W28 (l=6.4\degr, b=-0.2\degr) harbors 3 of 5 newly-discovered 1720 OH maser spots and two recently-discovered candidate supernova candidates (one of which is a $\gamma$-ray source), as…

Astrophysics of Galaxies · Physics 2015-05-13 H. S. Liszt

The enigmatic outflows of the Orion-KL region have raised discussions about their potential driving sources for several decades. Here, we present C18O(2-1) observations combined from the Submillimeter Array and the IRAM30m telescope. The…

Astrophysics · Physics 2009-11-13 H. Beuther , H. D. Nissen

We present the first fully sampled map of 12CO (1-0) emission from M82 covering the entire galaxy. Our map contains a 12 x 15 kpc^2 area. We find that extraplanar CO emission, previously reported at short distances above the galactic plane,…

Astrophysics · Physics 2009-11-07 Christopher L. Taylor , Fabian Walter , Min S. Yun

We present a systematic single-dish search for molecular outflows toward a sample of 9 candidate low-luminosity protostars and 30 candidate Very Low Luminosity Objects (VeLLOs; L_int < 0.1 L_sun). The sources are identified using data from…

Solar and Stellar Astrophysics · Physics 2015-06-11 Kamber R. Schwarz , Yancy L. Shirley , Michael M. Dunham

We report the discovery of a very dense jet-like fast molecular outflow surrounded by a wide-angle wind in a massive young stellar object (MYSO) G18.88MME (stellar mass $\sim$8 M$_{\odot}$) powering an Extended Green Object G18.89$-$0.47.…

Astrophysics of Galaxies · Physics 2021-07-07 I. I. Zinchenko , L. K. Dewangan , T. Baug , D. K. Ojha , N. K. Bhadari

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of 12CO(1-0) and 12CO(2-1) in the central 40" (680 pc) of the nuclear starburst galaxy NGC 253, including its molecular outflow. We measure the ratio of brightness…

We report the detection of sub-mm emission from dust at 850 microns and of the 12CO J=4-3 line in the two distant powerful radio galaxies 4C 60.07 (z=3.79) and 6C 1909+722 (z=3.53). In the case of 4C 60.07 the dust emission is also detected…

During the early stages of star formation, accretion processes such as infall from the envelope and molecular streamers, and ejection of matter through winds and jets take place simultaneously. The Class 0/I binary [BHB2007] 11 shows…

We present high resolution ($\sim$300 au) Atacama Large Millimeter/submillimeter Array (ALMA) observations of the massive young stellar object G11.92-0.61 MM 1. We resolve the immediate circumstellar environment of MM 1 in 1.3 mm continuum…

Solar and Stellar Astrophysics · Physics 2018-12-26 J. D. Ilee , C. J. Cyganowski , C. L. Brogan , T. R. Hunter , D. H. Forgan , T. J. Haworth , C. J. Clarke , T. J. Harries

We have observed 99 mid-infrared-bright, massive young stellar objects and compact HII regions drawn from the Red MSX source (RMS) survey in the J=3$-$2 transition of $^{12}$CO and $^{13}$CO, using the James Clerk Maxwell Telescope. 89…

Solar and Stellar Astrophysics · Physics 2015-09-02 L. T. Maud , T. J. T. Moore , S. L. Lumsden , J. C. Mottram , J. S. Urquhart , M. G. Hoare

Massive protostars generate strong radiation feedback, which may help set the mass they achieve by the end of the accretion process. Studying such feedback is therefore crucial for understanding the formation of massive stars. We report the…

Solar and Stellar Astrophysics · Physics 2020-01-08 Yichen Zhang , Kei E. I. Tanaka , Viviana Rosero , Jonathan C. Tan , Joshua Marvil , Yu Cheng , Mengyao Liu , Maria T. Beltran , Guido Garay

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