| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sagittarius1 |
| Right ascension | 18h 14m 39.5s2 |
| Declination | −17° 52′ 02″2 |
| Database references | |
| SIMBAD | data |
W33A is a protostar located approximately 12,000 light-years away from Earth, in the constellation Sagittarius. As a star in the early stages of formation, so has attracted the interest of astronomers, who observed that while the protostar is accumulating material from surrounding clouds of gas and dust, it is simultaneously ejecting fast moving jets of particles from its north and south poles.3
References
References
- Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- "W 33A". SIMBAD. Centre de données astronomiques de Strasbourg.
- A Master Blueprint for Making Stars, Science NOW Daily News, 27 January 2010
External links
External links
- Gibb, E. L.; Whittet, D. C. B.; Schutte, W. A.; Boogert, A. C. A.; Chiar, J. E.; Ehrenfreund, P.; Gerakines, P. A.; Keane, J. V.; Tielens, A. G. G. M.; Van Dishoeck, E. F.; Kerkhof, O. (2000). "An Inventory of Interstellar ICES toward the Embedded Protostar W33A". The Astrophysical Journal. 536 (1): 347. Bibcode:2000ApJ...536..347G. doi:10.1086/308940.
- De Wit, W. J.; Hoare, M. G.; Oudmaijer, R. D.; Mottram, J. C. (2007). "VLTI/MIDI 10 μm Interferometry of the Forming Massive Star W33A". The Astrophysical Journal. 671 (2): L169–L172. arXiv:0711.0437. Bibcode:2007ApJ...671L.169D. doi:10.1086/525253.