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| 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
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.
| 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 |
| 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 |
| 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. |