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Related papers: High-J CO emission in the Cepheus E protostellar o…

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The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocity and/or in the rate of mass loss. Such `episodic' ejection…

The fastest molecular component to the protostellar outflows -- extremely high-velocity (EHV) molecular jets -- are still puzzling since they are seen only rarely. The first aim is to analyze the interaction between the EHV jet and the slow…

We mapped 12 massive protostellar candidates in the CO J=2-1 line, which in combination with Zhang et al. (2005) completes an unbiased survey of outflows for all 48 sources with l>50^o in a sample of 101 massive protostellar candidates. We…

Astrophysics · Physics 2009-11-11 Kee-Tae Kim , S. E. Kurtz

We present a multi-wavelength study of nuclear outflows in the nearby dwarf Seyfert galaxy NGC~4395, which hosts an intermediate-mass black hole. Using \textit{JWST}/NIRSpec and MIRI IFU spectroscopy (1.66--28.6~$\mu$m), together with ALMA…

Context. The HII region/PDR/molecular cloud complex S106 is excited by a single O-star. The full extent of the warm and dense gas close to the star has not been mapped in spectrally resolved high-J CO or [CII] lines, so the kinematics of…

We present new observations of [CII] fine structure line emission from an isolated molecular cloud using the upGREAT instrument onboard SOFIA. These data are analyzed together with archival CO=1-0 and HI 21 cm emission spectra to…

Astrophysics of Galaxies · Physics 2022-12-21 Mark Heyer , Paul F. Goldsmith , Robert Simon , Rebeca Aladro , Oliver Ricken

We adopt the deep learning method CASI-3D (Convolutional Approach to Structure Identification-3D) to identify protostellar outflows in molecular line spectra. We conduct magneto-hydrodynamics simulations that model forming stars that launch…

Astrophysics of Galaxies · Physics 2021-01-06 Duo Xu , Stella S. R. Offner , Robert Gutermuth , Colin Van Oort

High spatial resolution low-J 12CO observations have shown that the wide-angle outflow seen in the Orion BN/KL region correlates with the famous H2 fingers. Recently, high-resolution large-scale mappings of mid- and higher-J CO emissions…

Astrophysics of Galaxies · Physics 2012-09-04 T. -C. Peng , L. A. Zapata , F. Wyrowski , R. Güsten , K. M. Menten

We present interferometric observations in the 12CO (2-1) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG30, using the Submillimeter Array. The dust continuum images resolve two…

Astrophysics · Physics 2009-11-13 Xuepeng Chen , Tyler L. Bourke , Ralf Launhardt , Thomas Henning

Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly high density and…

Solar and Stellar Astrophysics · Physics 2015-06-24 Adele L. Plunkett , Hector G. Arce , Stuartt A. Corder , Michael M. Dunham , Guido Garay , Diego Mardones

We present a multiline CS survey towards the brightest bow-shock B1 in the prototypical chemically active protostellar outflow L1157. We made use of (sub-)mm data obtained in the framework of the Chemical HErschel Surveys of Star forming…

Astrophysics of Galaxies · Physics 2015-06-23 A. I. Gómez-Ruiz , C. Codella , B. Lefloch , M. Benedettini , G. Busquet , C. Ceccarelli , B. Nisini , L. Podio , S. Viti

We describe a Herschel Space Observatory 194-671 micron spectroscopic survey of a sample of 121 local luminous infrared galaxies and report the fluxes of the CO $J$ to $J$-1 rotational transitions for $4 \leqslant J \leqslant 13$, the [NII]…

We report Very Large Array (VLA) observations in the Q-band toward 10 ionized jet candidates to search for SiO emission, a well-known shocked gas tracer. We detected 7 mm continuum counterparts toward 90% of the jet candidates. In most…

Astrophysics of Galaxies · Physics 2023-02-01 Tatiana M. Rodriguez , Peter Hofner , Isaac Edelman , Esteban D. Araya , Viviana Rosero

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

We present position-velocity strip maps of the Galactic Center region in the CO J=7-6 and J=4-3 transitions observed with the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) located at Amundsen-Scott South Pole Station.…

Astrophysics · Physics 2007-05-23 Sungeun Kim , Christopher L. Martin , Antony A. Stark , Adair P. Lane

We report molecular line observations of the massive protostellar source G339.88-1.26 with the Atacama Large Millimeter/Submillimeter Array. The observations reveal a highly collimated SiO jet extending from the 1.3 mm continuum source,…

We present observations of the nearby spiral galaxy IC342 with the Herschel Spectral and Photometric Imaging Receiver (SPIRE) Fourier Transform Spectrometer. The spectral range afforded by SPIRE, 196-671 microns, allows us to access a…

We present spatially resolved ALMA images of CO J=3-2 emission from the protoplanetary disk around HD100546. We model the spatially-resolved kinematic structure of the CO emission. Assuming a velocity profile which prescribes a flat or…

Earth and Planetary Astrophysics · Physics 2017-12-07 Catherine Walsh , Cail Daley , Stefano Facchini , Attila Juhasz

We present the results of a new study of the molecular gas associated with the "extended green object" (EGO) G35.03+0.35. This object, very likely a massive young stellar object, is embedded in a molecular cloud at the border of an HII…

Astrophysics of Galaxies · Physics 2015-05-30 S. Paron , M. E. Ortega , A. Petriella , M. Rubio , E. Giacani , G. Dubner

Atacama Pathfinder Experiment (APEX) mapping observations in CO (9-8) and (4-3) toward a high-mass star-forming region, NGC 6334 I, are presented. The CO (9-8) map has a 6.4 arcsec resolution, revealing a ~0.5 pc, jet-like, and bipolar…

Astrophysics of Galaxies · Physics 2015-06-03 Keping Qiu , Friedrich Wyrowski , Karl M. Menten , Rolf Guesten , Silvia Leurini , Christian Leinz
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