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A Very Compact Extremely High Velocity Flow toward MMS 5/OMC-3 Revealed with ALMA
Indexado
WoS WOS:000457527800019
Scopus SCOPUS_ID:85062045304
DOI 10.3847/1538-4357/AAF1B6
Año 2019
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



Both high-and low-velocity outflows are occasionally observed around a protostar by molecular line emission. The high-velocity component is called "extremely high velocity (EHV) flow, while the low-velocity component is simply referred to as "(molecular) outflow." This study reports a newly found EHV flow and outflow around MMS 5 in the Orion Molecular Cloud 3 observed with ALMA. In the observation, CO J = 2-1 emission traces both the EHV flow (vertical bar nu(LSR) - nu(sys)vertical bar similar or equal to 50-100 km s(-1)) and outflow (vertical bar nu(LSR) - nu(sys)vertical bar similar or equal to 10-50 km s(-1)). On the other hand, SiO J = 5-4 emission only traces the EHV flow. The EHV flow is collimated and located at the root of the V-shaped outflow. The CO outflow extends up to similar to 14,000 au with a position angle (P.A.) of similar to 79 degrees, and the CO redshifted EHV flow extends to similar to 11,000 au with a P.A. similar to 96 degrees. The EHV flow is smaller than the outflow, and the dynamical timescale of the EHV flow is shorter than that of the outflow by a factor of similar to 3. The flow driving mechanism is discussed based on the size, timescale, axis difference between the EHV flow and outflow, and periodicity of the knots. Our results are consistent with the nested wind scenario, although the jet entrainment scenario could not completely be ruled out.

Revista



Revista ISSN
Astrophysical Journal 0004-637X

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Matsushita, Yuko Mujer KYUSHU UNIV - Japón
Kyushu University - Japón
2 Takahashi, Satoko Mujer Atacama Large Millimeter Array - Chile
Grad Univ Adv Studies SOKENDAI - Japón
Atacama Large Millimeter-submillimeter Array - Chile
NAOJ Chile Observatory - Chile
The Graduate University for Advanced Studies - Japón
National Institutes of Natural Sciences - National Astronomical Observatory of Japan - Japón
3 Machida, Masahiro N. Hombre KYUSHU UNIV - Japón
Kyushu University - Japón
4 Tomisaka, Kohji Hombre Grad Univ Adv Studies SOKENDAI - Japón
Natl Astron Observ Japan - Japón
The Graduate University for Advanced Studies - Japón
National Institutes of Natural Sciences - National Astronomical Observatory of Japan - Japón

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Financiamiento



Fuente
JSPS KAKENHI
Japan Society for the Promotion of Science
ALMA Japan Research Grant of NAOJ Chile Observatory
Joint ALMA Observatory (Santiago, Chile) Science Visiter Program

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
This paper uses the following ALMA data: ADS/JAO. ALMA #2015.1.00341.S. ALMA is a partnership among ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. Y. Matsushita and K. Tomisaka are very grateful for support from the Joint ALMA Observatory (Santiago, Chile) Science Visiter Program while visiting coauthor S. Takahashi. This work was supported by JSPS KAKENHI grants (17K05387, 17H06360, 17H02869, and 15K05032). Y. Matsushita was supported by the ALMA Japan Research grant of NAOJ Chile Observatory, NAOJ-ALMA-192.
This paper uses the following ALMA data: ADS/JAO. ALMA #2015.1.00341.S. ALMA is a partnership among ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. Y. Matsushita and K. Tomisaka are very grateful for support from the Joint ALMA Observatory (Santiago, Chile) Science Visiter Program while visiting coauthor S. Takahashi. This work was supported by JSPS KAKENHI grants (17K05387, 17H06360, 17H02869, and 15K05032). Y. Matsushita was supported by the ALMA Japan Research grant of NAOJ Chile Observatory, NAOJ-ALMA-192.

Muestra la fuente de financiamiento declarada en la publicación.