Multiple Jets in the Bursting Protostar HOPS 373SW
We present the outflows detected in HOPS 373SW, a protostar undergoing a modest 30% brightness increase at 850 μ m. Atacama Large Millimeter/submillimeter Array observations of shock tracers, including SiO 8–7, CH _3 OH 7 _k –6 _k , and ^12 CO 3–2 emission, reveal several outflow features around HOP...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad21e3 |
| _version_ | 1827318962407342080 |
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| author | Seokho Lee Jeong-Eun Lee Doug Johnstone Gregory J. Herczeg Yuri Aikawa |
| author_facet | Seokho Lee Jeong-Eun Lee Doug Johnstone Gregory J. Herczeg Yuri Aikawa |
| author_sort | Seokho Lee |
| collection | DOAJ |
| description | We present the outflows detected in HOPS 373SW, a protostar undergoing a modest 30% brightness increase at 850 μ m. Atacama Large Millimeter/submillimeter Array observations of shock tracers, including SiO 8–7, CH _3 OH 7 _k –6 _k , and ^12 CO 3–2 emission, reveal several outflow features around HOPS 373SW. The knots in the extremely high-velocity SiO emission reveal the wiggle of the jet, for which a simple model derives a 37° inclination angle of the jet to the plane of the sky, a jet velocity of 90 km s ^−1 , and a period of 50 yr. The slow SiO and CH _3 OH emission traces U-shaped bow shocks surrounding the two CO outflows. One outflow is associated with the high-velocity jets, while the other is observed to be close to the plane of the sky. The misaligned outflows imply that previous episodic accretion events have either reoriented HOPS 373SW or that it is an unresolved protostellar binary system with misaligned outflows. |
| first_indexed | 2024-04-25T00:11:41Z |
| format | Article |
| id | doaj.art-cea899bc6d0a4f78b6cb970e437bbb95 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-04-25T00:11:41Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-cea899bc6d0a4f78b6cb970e437bbb952024-03-13T13:29:22ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-0196413410.3847/1538-4357/ad21e3Multiple Jets in the Bursting Protostar HOPS 373SWSeokho Lee0https://orcid.org/0000-0002-0226-9295Jeong-Eun Lee1https://orcid.org/0000-0003-3119-2087Doug Johnstone2https://orcid.org/0000-0002-6773-459XGregory J. Herczeg3https://orcid.org/0000-0002-7154-6065Yuri Aikawa4https://orcid.org/0000-0003-3283-6884Korea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea ; seokholee@kasi.re.krDepartment of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea ; lee.jeongeun@snu.ac.kr; SNU Astronomy Research Center, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of KoreaNRC Herzberg Astronomy and Astrophysics , 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada; Department of Physics and Astronomy, University of Victoria , 3800 Finnerty Rd, Elliot Building, Victoria, BC V8P 5C2, CanadaKavli Institute for Astronomy and Astrophysics, Peking University , Yiheyuan Lu 5, Haidian Qu, 100871 Beijing, People’s Republic of China; Department of Astronomy, Peking University , Yiheyuan 5, Haidian Qu, 100871 Beijing, People’s Republic of ChinaDepartment of Astronomy, University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, JapanWe present the outflows detected in HOPS 373SW, a protostar undergoing a modest 30% brightness increase at 850 μ m. Atacama Large Millimeter/submillimeter Array observations of shock tracers, including SiO 8–7, CH _3 OH 7 _k –6 _k , and ^12 CO 3–2 emission, reveal several outflow features around HOPS 373SW. The knots in the extremely high-velocity SiO emission reveal the wiggle of the jet, for which a simple model derives a 37° inclination angle of the jet to the plane of the sky, a jet velocity of 90 km s ^−1 , and a period of 50 yr. The slow SiO and CH _3 OH emission traces U-shaped bow shocks surrounding the two CO outflows. One outflow is associated with the high-velocity jets, while the other is observed to be close to the plane of the sky. The misaligned outflows imply that previous episodic accretion events have either reoriented HOPS 373SW or that it is an unresolved protostellar binary system with misaligned outflows.https://doi.org/10.3847/1538-4357/ad21e3ProtostarsJetsShocks |
| spellingShingle | Seokho Lee Jeong-Eun Lee Doug Johnstone Gregory J. Herczeg Yuri Aikawa Multiple Jets in the Bursting Protostar HOPS 373SW The Astrophysical Journal Protostars Jets Shocks |
| title | Multiple Jets in the Bursting Protostar HOPS 373SW |
| title_full | Multiple Jets in the Bursting Protostar HOPS 373SW |
| title_fullStr | Multiple Jets in the Bursting Protostar HOPS 373SW |
| title_full_unstemmed | Multiple Jets in the Bursting Protostar HOPS 373SW |
| title_short | Multiple Jets in the Bursting Protostar HOPS 373SW |
| title_sort | multiple jets in the bursting protostar hops 373sw |
| topic | Protostars Jets Shocks |
| url | https://doi.org/10.3847/1538-4357/ad21e3 |
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