A birth and growth of a collimated molecular jet from an AGB star
| dc.creator | Imai, Hiroshi | |
| dc.creator | Diamond, Philip J. | |
| dc.date | 2003-09-25 | |
| dc.date.accessioned | 2026-07-07T02:09:45Z | |
| dc.date.available | 2026-07-07T02:09:45Z | |
| dc.description | With the VLBA, we have observed water masers associated with the OH/IR star, W43A, which trace a birth and growth of a molecular jet. The water masers exhibit the collimated distribution (1700 AU: 20 AU) and fast motions (+/-150 km/s). The maser distribution was well fit by a precessing jet model. The jet length has extended by 800 AU within 8 years, indicating that the extension rate is roughly equivalent to the jet speed (150 km/s). Very likely the jet was born around the year 1960. An elongated planetary nebula will be formed by such a jet during an extremely short period (<<1000 yrs) of the transition to form a ptoto-planetary nebula. Then fading of the water maser jet will be observed during our human life. | |
| dc.description | 5 pages, 2 figures, presented at the conference "Future Directions in High Resolution Astronomy: A Celebration of the 10th Anniversary of the VLBA", held in June 8-12, 2003, in Socorro, New Mexico, USA; to be published in the ASP Conference Series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0309682 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0309682 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/6554 | |
| dc.subject | Astrophysics | |
| dc.title | A birth and growth of a collimated molecular jet from an AGB star | |
| dc.type | text |