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Related papers: The Great PV Ceph Outflow: A Case Study in Outflow…

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We present a new set of high-resolution molecular line maps of the gas immediately surrounding various Herbig-Haro (HH) knots of the giant HH flow HH 315, from the young star PV Cephei. The observations, aimed at studying the entrainment…

Astrophysics · Physics 2009-11-07 Hector G. Arce , Alyssa A. Goodman

We present the first set of detailed molecular line maps of the region associated with the giant Herbig-Haro flow HH 300, from the young star IRAS 04239+2436. Our results indicate that the red lobe of the HH 300 flow is depositing a fair…

Astrophysics · Physics 2009-11-06 Hector G. Arce , Alyssa A. Goodman

We present new observations of the CepA-East region of massive star formation and describe an extended and dynamically distinct feature not previously recognised. This feature is present in emission from H2CS, OCS, CH3OH, and HDO at -5.5…

Astrophysics · Physics 2009-11-11 C. Codella , S. Viti , D. A. Williams , R. Bachiller

We continue to study the structure and kinematics of HH flows. Herbig-Haro (HH) flows exhibit large variety of morphological and kinematical structures. Both proper motion (PM) and radial velocity investigations are essential to understand…

Solar and Stellar Astrophysics · Physics 2025-01-08 T. A. Movsessian , T. Yu. Magakian , A. V. Moiseev

We present high sensitivity 12CO and 13CO (1-0) molecular line maps covering the full extent of the parsec scale Haro~6-10 Herbig-Haro (HH) flow. We report the discovery of a molecular CO outflow along the axis of parsec-scale HH flow.…

Astrophysics · Physics 2011-02-11 Irena Stojimirović , Gopal Narayanan , Ronald L. Snel

We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially identified from a deep H-alpha film from the recently…

Astrophysics · Physics 2009-10-31 S. L. Mader , W. J. Zealey , Q. A. Parker , M. R. W. Masheder

While there are many parsec-scale Herbig-Haro (HH) outflows known to be driven by low-mass young stars, few are associated with their intermediate mass counterparts. Here we present the discovery of five such bipolar outflows. Of these,…

Astrophysics · Physics 2009-11-10 Fiona McGroarty , Tom Ray , John Bally

We study the interaction of galactic wind with hot halo gas using hydrodynamical simulations. We find that the outcome of this interaction depends crucially on the wind injection density and velocity. Various phases of the extraplanar media…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Mahavir Sharma , Biman B. Nath , Indranil Chattopadhyay , Yuri Shchekinov

Three independent lines of evidence imply that the young star PV Ceph is moving at roughly 20 km/s through the interstellar medium. The first, and strongest, suggestion of motion comes from the geometry of the HH knots in the "giant"…

Astrophysics · Physics 2009-11-10 Alyssa A. Goodman , Hector G. Arce

We present a parsec-scale molecular hydrogen (H$_2$ 1-0 S(1) at 2.12~\micron) outflow discovered from the UKIRT Widefield Infrared Survey for H$_2$. The outflow is located in the infrared dark cloud core MSXDC G053.11+00.05 MM1 at 1.7 kpc…

Astrophysics of Galaxies · Physics 2018-08-15 Hyun-Jeong Kim , Bon-Chul Koo , Tae-Soo Pyo , Christopher J. Davis

We present high angular resolution (12"-24") and high sensitivity 12CO and 13CO J=2-1 and J=1-0 observations of the HH 1-2 outflow. The observations show the molecular counterpart, moving with a velocity of approx. 30 km/s, of the optical…

Astrophysics · Physics 2009-10-31 A. Moro-Martin , J. Cernicharo , A. Noriega-Crespo , J. Martin-Pintado

We present the results of Keck Telescope laser adaptive optics integral field spectroscopy with OSIRIS of the innermost regions of the NGC 1333 SVS 13 outflow that forms the system of Herbig-Haro objects 7-11. We find a bright 0.2 arc sec…

Solar and Stellar Astrophysics · Physics 2015-06-22 Klaus W. Hodapp , Rolf Chini

We present multi-line and continuum observations of the circumstellar environment within 10^4 AU of a sample of protostars to investigate how the effects of outflows on their immediate environment changes over time. 12CO(1-0) emission…

Astrophysics · Physics 2008-11-26 Hector G. Arce , Anneila I. Sargent

Stretching a length reaching 10 pc projected in the plane of sky, the radio jet associated with Herbig-Haro objects 80 and 81 (HH 80-81) is known as the largest and best collimated protostellar jet in our Galaxy. The nature of the molecular…

Astrophysics of Galaxies · Physics 2019-05-01 Keping Qiu , Friedrich Wyrowski , Karl Menten , Qizhou Zhang , Rolf Guesten

We present a study of molecular outflows using six molecular lines (including 12CO/13CO/C18O/HCO+(J = 1-0) and SiO/CS(J = 2-1)) toward nine nearby high-mass star-forming regions with accurate known distances. This work is based on the…

Astrophysics of Galaxies · Physics 2021-03-10 De-Jian Liu , Ye Xu , Ying-Jie Li , Sheng Zheng , Deng-Rong Lu , Chao-Jie Hao , Ze-Hao Lin , Shuai-Bo Bian , Li-Ming Liu

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

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

Jets and disc winds play an important role in the evolution of protoplanetary discs and the formation of planetary systems. However, there is still a lack of observational data regarding the presence and parameters of outflows, especially…

We present $^{12}$CO, $^{13}$CO and C$^{18}$O (J=3$-$2) observations of a new cluster of outflows in the Vulpecula Rift with HARP-B on the JCMT. The mass associated with the outflows, measured using the $^{12}$CO HARP-B observations and…

Astrophysics of Galaxies · Physics 2015-05-30 J. C. Mottram , C. M. Brunt

We report the results of a spatially compete, high-sensitivity survey for Herbig-Haro (HH) outflows in the Western and Eastern Circinus molecular clouds. We have detected 28 new HH objects in Circinus West, doubling the number known in this…

Astrophysics of Galaxies · Physics 2025-03-20 T. A. Rector , L. Prato , R. Kerr , E. Papraniku , K. Fisk
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