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We present a study on the impact of molecular outflows in the Perseus molecular cloud complex using the COMPLETE survey large-scale 12CO(1-0) and 13CO(1-0) maps. We used three-dimensional isosurface models generated in RA-DEC-Velocity space…

Solar and Stellar Astrophysics · Physics 2015-03-17 Hector G. Arce , Michelle A. Borkin , Alyssa A. Goodman , Jaime E. Pineda , Michael W. Halle

We present a study of the central zone of the star-forming region L1448 at 217--230 GHz ($\sim$ 1.3 mm) using ALMA observations. Our study focuses on the detection of proto-stellar molecular outflows and the interaction with the surrounding…

This paper reports on the detection of a likely explosive outflow in the high-mass star-forming complex G34.26+0.15, adding to the small number (six) of explosive outflows detected so far. ALMA CO(2-1) and SiO(5-4) archival observations…

Solar and Stellar Astrophysics · Physics 2025-04-23 Namitha Issac , Xing Lu , Tie Liu , Luis A Zapata , Hong-Li Liu , Anandmayee Tej , Yan-Kun Zhang , Wenyu Jiao , Suinan Zhang

Radio jets can play multiple roles in the feedback loop by regulating the accretion of the gas, by enhancing gas turbulence, and by driving gas outflows. Numerical simulations are beginning to make detailed predictions about these…

Astrophysics of Galaxies · Physics 2019-01-08 Raffaella Morganti , Robert Schulz , Kristina Nyland , Zsolt Paragi , Tom Oosterloo , Elizabeth Mahony , Suma Murthy

Dense outflowing gas, traced by transitions of molecules with large dipole moment, is important for understanding mass loss and feedback of massive star formation. HCN 3-2 and HCO$^+$ 3-2 are good tracers of dense outflowing molecular gas,…

Astrophysics of Galaxies · Physics 2024-06-14 Yani Xu , Junzhi Wang , Shu Liu , Juan Li , Yuqiang LI , Rui Luo , Chao Ou , Siqi Zheng , Yijia Liu

Up to now only a few intermediate-mass molecular outflows have been studied with enough high-angular resolution. The aim of this work is to study in detail the intermediate-mass YSO IRAS 22272+6358A, which is embedded in L1206, and its…

Astrophysics · Physics 2009-11-11 Maria T. Beltran , Josep M. Girart , Robert Estalella

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…

As a continuation of a previous work, in which we found strong evidence of massive molecular outflows towards a massive star forming site, we present a new study of this region based on very high angular resolution observations with the aim…

Astrophysics of Galaxies · Physics 2015-06-17 S. Paron , C. Fariña , M. E. Ortega

We present a census of molecular outflows across four active regions of star formation in the Perseus molecular cloud (NGC 1333, IC348/HH211, L1448 and L1455), totalling an area of over 1000 sq arcmin. This is one of the largest surveys of…

Astrophysics of Galaxies · Physics 2015-05-19 Emily I. Curtis , John S. Richer , Jonathan J. Swift , Jonathan P. Williams

The young stellar source HH 30 is a textbook example of an ionic optical jet originating from a disk in an edge-on system shown by the HST. It has a remnant envelope in $^{12}$CO observed by ALMA. The optical jet is characterized by its…

Solar and Stellar Astrophysics · Physics 2024-02-06 Tsung-Han Ai , Chun-Fan Liu , Hsien Shang , Doug Johnstone , Ruben Krasnopolsky

Stellar feedback-driven outflows are important regulators of the gas-star formation cycle. However, resolving outflow physics requires high resolution observations that can only be achieved in very nearby galaxies, making suitable targets…

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 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

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

We continue our program of investigation of the proper motions of spectrally separated structures in the Herbig-Haro outflows with the aid of Fabry-Perot scanning interferometry. This work mainly focuses on the physical nature of various…

Astrophysics of Galaxies · Physics 2021-08-18 T. A. Movsessian , T. Yu. Magakian , A. V. Moiseev

Context: Jets and outflows are key ingredients in the formation of stars across the mass spectrum. In clustered regions, understanding powering sources and outflow components poses a significant problem. Aims: To understand the dynamics in…

Solar and Stellar Astrophysics · Physics 2015-02-25 P. D. Klaassen , K. G. Johnston , S. Leurini , L. A. Zapata

The Galactic center (GC) lobe is a degree-tall shell of gas that spans the central degree of our Galaxy. It has been cited as evidence for a mass outflow from our GC region, which has inspired diverse models for its origin. However, most…

Astrophysics of Galaxies · Physics 2014-11-20 C. J. Law

We present the detection, performed with the Westerbork Synthesis Radio Telescope (WSRT) and the Karl Jansky Very Large Array (VLA), of a fast HI 21-cm outflow in the ultra-luminous infrared galaxy Mrk 231. The outflow is observed as…

Astrophysics of Galaxies · Physics 2016-09-07 Raffaella Morganti , Sylvain Veilleux , Tom Oosterloo , Stacy H. Teng , David Rupke

Previous studies have shown strong evidence that the Sun is crossing an outflow originating from the Sco-Cen OB association. Understanding this outflow's origin and structure illuminates how massive star formation shapes the interstellar…

Astrophysics of Galaxies · Physics 2024-09-11 M. Piecka , S. Hutschenreuter , J. Alves

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