Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...393l..33m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 393, no. 1, July 1, 1992, p. L33-L36. Research supported by NASA
Astronomy and Astrophysics
Astrophysics
18
Interstellar Masers, O Stars, Star Formation, Water Masers, H Ii Regions, Massive Stars, Molecular Flow, Stellar Envelopes, Stellar Winds
Scientific paper
Observations by Gwinn et al. (1992) of the proper motions of water masers in W49N show that they have an elongated distribution expanding from a common center. Features with high space velocity only occur far from the center, while low-velocity features occur at all distances. It is proposed that water masers in star-forming regions occur in expanding shells swept up by high-velocity winds from young, massive stars during the early phases of the expansion. In W49N, confinement of the bubble by a density distribution with an axial cavity can explain both the velocity field and the shape of the maser distribution. A fully dynamical calculation of the expanding bubble is presented which provides a satisfactory fit for the observations and suggests that this system is only about 250 yr old. Thus these observations may show the very first stages of the formation of a jet from a young stellar object.
Elitzur Moshe
Mac Low Mordecai-Mar
No associations
LandOfFree
Water masers in W49N - The youngest stellar jet? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Water masers in W49N - The youngest stellar jet?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water masers in W49N - The youngest stellar jet? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1204661