English
Related papers

Related papers: Bipolar Molecular Outflow from M17

200 papers

We present molecular line, H2O maser, radio continuum and near infrared maps of the bipolar outflow source AFGL5142. The high resolution of our molecular CO observations enables us to define the morphology of the large-scale bipolar outflow…

CRL 618 is a well-studied pre-planetary nebula. It has multiple highly collimated optical lobes, fast molecular outflows along the optical lobes, and an extended molecular envelope that consists of a dense torus in the equator and a tenuous…

Astrophysics of Galaxies · Physics 2019-08-19 Chin-Fei Lee , Raghvendra Sahai , Carmen Sánchez Contreras , Po-Sheng Huang , Jeremy Jian Hao Tay

We present high resolution images of the bipolar outflow from W51e2, which are produced from the Submillimeter Array archival data observed for CO(3-2) and HCN(4-3) lines with angular resolutions of 0.8" x 0.6" and 0.3" x 0.2",…

Solar and Stellar Astrophysics · Physics 2010-07-20 Hui Shi , Jun-Hui Zhao , Jinlin Han

We present molecular line observations, made with angular resolutions of ~20", toward the filamentary infrared dark cloud G34.43+0.24 using the APEX [CO(3-2), 13CO(3-2), C18O(3-2) and CS(7-6) transitions], Nobeyama 45 m [CS(2-1), SiO(2-1),…

Astrophysics of Galaxies · Physics 2015-03-17 Patricio Sanhueza , Guido Garay , Leonardo Bronfman , Diego Mardones , Jorge May , Masao Saito

We investigated the origin of the Planetary Nebula (PN) M 1-16 using narrow-band optical imaging, and high- and low-resolution optical spectra to perform a detailed morpho-kinematic and chemical studies. M 1-16 is revealed to be a…

Solar and Stellar Astrophysics · Physics 2023-08-23 M. A. Gómez-Muñoz , R. Vázquez , L. Sabin , L. Olguín , P. F. Guillén , S. Zavala , R. Michel

ALMA imaging of the cold molecular medium in the nearby starburst galaxy NGC 1808 is presented. The observations reveal the distribution of molecular gas, traced by $^{12}$CO (1-0) and $^{12}$CO (3-2), and continuum (93 and 350 GHz) across…

Astrophysics of Galaxies · Physics 2017-11-15 Dragan Salak , Yuto Tomiyasu , Naomasa Nakai , Nario Kuno , Yusuke Miyamoto , Hiroyuki Kaneko

We present Northern Extended Millimeter Array (NOEMA) observations of the CO (2-1) molecular gas kinematics in the nearby Compton-thick Seyfert 2 galaxy NGC 3079, with an angular resolution of 0.5" ($\sim$40 pc). To interpret the observed…

Most bipolar outflows are associated with individual young stellar objects and have small opening angles. Here we report the discovery of an extremely wide-angle ($\sim$180$\arcdeg$) bipolar outflow ("EWBO") in a cluster forming region AFGL…

The mechanism behind the shaping of bipolar planetary nebulae is still poorly understood. Accurately tracing the molecule-rich equatorial regions of post-AGB stars can give valuable insight into the ejection mechanisms at work. We…

We present high angular resolution Submillimeter Array (SMA) and Combined Array for Research in Millimeter-wave Astronomy (CARMA) observations of two GLIMPSE Extended Green Objects (EGOs)--massive young stellar object (MYSO) outflow…

Solar and Stellar Astrophysics · Physics 2015-03-30 C. J. Cyganowski , C. L. Brogan , T. R. Hunter , E. Churchwell , Q. Zhang

Galactic outflows are believed to play a critical role in the evolution of galaxies by regulating their mass build-up and star formation. Theoretical models assumes bipolar shapes for the outflows that extends well into the circumgalctic…

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…

A significant fraction of planetary nebulae (PNe) exhibit collimated outflows, distinct narrow kinematical components with notable velocity shifts with respect to the main nebular shells typically associated with low-ionization compact…

Solar and Stellar Astrophysics · Physics 2020-01-08 J. S. Rechy-García , M. A. Guerrero , S. Duarte Puertas , Y. -H. Chu , J. A. Toalá , L. F. Miranda

We present ALMA observations of the CO(2-1) and CO(3-2) molecular gas transitions and associated (sub)-mm continua of the nearby Seyfert 1.5 galaxy NGC3227 with angular resolutions 0.085-0.21" (7-15pc). On large scales the cold molecular…

We present interferometric observations of $^{12}$CO and $^{13}$CO $J$=2$-$1 emission from the butterfly-shaped, young planetary nebula NGC 6302. The high angular resolution and high sensitivity achieved in our observations allow us to…

Astrophysics · Physics 2009-11-13 Dinh-V-Trung , V. Bujarrabal , A. Castro-Carrizo , J. Lim , S. Kwok

We present Submillimeter Array observations toward the 10^{4.7} Lsun star-forming region G240.31+0.07, in the J=2-1 transition of 12CO and 13CO and at 1.3 mm continuum, as well as the 12CO and 13CO observations from the Caltech…

Astrophysics of Galaxies · Physics 2011-02-11 Keping Qiu , Qizhou Zhang , Jingwen Wu , Huei-Ru Chen

We present the results of SiO (2-1) and SO2 (12-13) line observations of Sgr B2(N) made with the Atacama Large Millimeter/submillimeter Array (ALMA) at an angular resolution of ~2arcsec. Our analysis of the SiO and SO2 line emission reveals…

Astrophysics of Galaxies · Physics 2015-12-23 Aya E. Higuchi , Tetsuo Hasegawa , Kazuya Saigo , Patricio Sanhueza , James O. Chibueze

We present Atacama Large Millimeter/submillimeter Array Band 3 observations of N$_2$H$^+$ (1-0) and CH$_3$CN (5-4), as well as Band 7 observations of the H$_2$CO molecular line emissions from the protostellar system GGD 27-MM2(E). Through…

We carried out deep searches for CO line emission in the outer disk of M33, at R>7 kpc, and examined the dynamical conditions that can explain variations in the mass distribution of the molecular cloud throughout the disk of M33. We used…

Astrophysics of Galaxies · Physics 2019-02-20 Edvige Corbelli , Jonathan Braine , Carlo Giovanardi

We find strong evidence for outflows originating in the dense molecular core NGC 6334 I(North): a 1000 Msol molecular core distinguished by its lack of HII regions and mid-IR emission. New observations were obtained of the SiO 2-1 and 5-4…

Astrophysics · Physics 2009-10-31 S. T. Megeath , A. R. Tieftrunk