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Related papers: Multiple Components of the Outflow in the Protoste…

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HH 212 is a Class 0 protostellar system found to host a "hamburger"-shaped dusty disk with a rotating disk atmosphere and a collimated SiO jet at a distance of ~ 400 pc. Recently, a compact rotating outflow has been detected in SO and SO2…

Astrophysics of Galaxies · Physics 2018-04-04 Chin-Fei Lee , Zhi-Yun Li , Claudio Codella , Paul T. Ho , Linda Podio , Naomi Hirano , Hsien Shang , Neal J. Turner , Qizhou Zhang

During star formation, the accretion disk drives fast MHD winds which usually contain two components, a collimated jet and a radially distributed wide-angle wind. These winds entrain the surrounding ambient gas producing molecular outflows.…

HH 212 is a highly collimated jet discovered in H2 powered by a young Class 0 source, IRAS 05413-0104, in the L1630 cloud of Orion. We have mapped around it in 1.33 mm continuum, 12CO ($J=2-1$), 13CO ($J=2-1$), C18O ($J=2-1$), and SO ($J_K…

We present the outflows detected in HOPS 373SW, a protostar undergoing a modest $30\%$ brightness increase at 850 $\mu$m. Atacama Large Millimeter/submillimeter Array (ALMA) observations of shock tracers, including SiO 8--7, CH$_3$OH…

Astrophysics of Galaxies · Physics 2024-02-01 Seokho Lee , Jeong-Eun Lee , Doug Johnstone , Gregory J. Herczeg , Yuri Aikawa

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 present the first detection of spatially resolved protostellar outflows and jets in the outer Galaxy. We observed five star-forming regions in the outer Galaxy (Sh 2--283, NOMF05-16/19/23/63; galactocentric distance = 15.7--17.4 kpc)…

HH 211 is a highly collimated jet originating from a nearby young Class 0 protostar. Here is a follow-up study of the jet with our previous observations at unprecedented resolution up to ~ 0.3" in SiO (J=8-7), CO (J=3-2), and SO…

Astrophysics of Galaxies · Physics 2015-05-18 Chin-Fei Lee , Tatsuhiko I. Hasegawa , Naomi Hirano , Aina Palau , Hsien Shang , Paul T. P. Ho , Qizhou Zhang

Rotating outflows from protostellar disks might trace extended magneto-hydrodynamic (MHD) disk winds (DWs), providing a solution to the angular momentum problem in disk accretion for star formation. In the jet system HH 212, a rotating…

Astrophysics of Galaxies · Physics 2021-02-10 Chin-Fei Lee , Benoit Tabone , Sylvie Cabrit , Claudio Codella , Linda Podio , Ferreira , J. , Jacquemin-Ide , J

The origin and impact of outflows on proto-planetary disks and planet formation are key open questions. DG Tau B, a Class I protostar with a structured disk and a striking rotating conical CO outflow, recently identified with ALMA as one of…

Solar and Stellar Astrophysics · Physics 2024-08-21 Valentin Delabrosse , Catherine Dougados , Sylvie Cabrit , Benoit Tabone , Lukasz Tychoniec , Tom Ray , Linda Podio , Melissa McClure

As part of the ALMA Large Program "Early Planet Formation in Embedded Disks" (eDisk), 12CO (2 - 1) was observed towards 19 nearby low-mass protostars. Of these objects, 15 sources are found to show molecular outflow emission. Based on their…

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 have observed the late Class I protostellar source Elias~29 at a spatial-resolution of 70~au with the Atacama~Large~Millimeter/submillimeter~Array (ALMA) as part of the FAUST Large Program. We focus on the line emission of SO, while that…

Solar and Stellar Astrophysics · Physics 2025-01-22 Yoko Oya , Eri Saiga , Anna Miotello , FAUST members

We present molecular line observations of the protostellar outflow associated with HH270mms1 in the Orion B molecular cloud with ALMA. The 12CO(J = 3 - 2) emissions show that the outflow velocity structure consists of four distinct…

Astrophysics of Galaxies · Physics 2024-03-19 Mitsuki Omura , Kazuki Tokuda , Masahiro N. Machida

HH 212 is a nearby (400 pc) highly collimated protostellar jet powered by a Class 0 source in Orion. We have mapped the inner 80" (~ 0.16 pc) of the jet in SiO (J=8-7) and CO (J=3-2) simultaneously at ~ 0.5 resolution with the Atacama…

Astrophysics of Galaxies · Physics 2015-06-11 Chin-Fei Lee , Naomi Hirano , Qizhou Zhang , Hsien Shang , Paul T. P. Ho , Yosuke Mizuno

We observed the HH 211 jet in the submillimeter continuum and the CO(3-2) and SiO(8-7) transitions with the Submillimeter Array. The continuum source detected at the center of the outflow shows an elongated morphology, perpendicular to the…

HH 212 is a nearby (460 pc) protostellar jet discovered in H$_2$ powered by a Class 0 source, IRAS 05413-0104, in the L1630 cloud of Orion. It is highly collimated and symmetric with matched pairs of bow shocks on either side of the source.…

The origin of outflows and their exact impact on disk evolution and planet formation remain crucial open questions. DG Tau B is a Class I protostar associated with a rotating conical CO outflow and a structured disk. Hence it is an ideal…

Solar and Stellar Astrophysics · Physics 2022-12-14 A. de Valon , C. Dougados , S. Cabrit , F. Louvet , L. A. Zapata , D. Mardones

HH 211 is a nearby young protostellar system with a highly collimated jet. We have mapped it in 352 GHz continuum, SiO (J=8-7), and HCO+ (J=4-3) emission at up to ~ 0.2" resolution with the Submillimeter Array (SMA). The continuum source is…

Astrophysics of Galaxies · Physics 2011-02-11 Chin-Fei Lee , Naomi Hirano , Aina Palau , Paul T. P. Ho , Tyler L. Bourke , Qizhou Zhang , Hsien Shang

Protostellar outflows display wide-angle winds and collimated jets, the magnetocentrifugal launching of which enables accretion onto the protostar. The majority of the outflow mass is likely ejected or entrained molecular H$_2$, which can…

The Atacama Large Millimeter/submillimeter Array Survey of Orion Planck Galactic Cold Clumps (ALMASOP) reveals complex nested morphological and kinematic features of molecular outflows through the CO (J = 2 - 1) and SiO (J = 5 - 4)…

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