Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...350l..41m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 350, Feb. 20, 1990, p. L41-L44.
Astronomy and Astrophysics
Astrophysics
64
Interstellar Masers, Late Stars, Molecular Clouds, Star Formation, Stellar Envelopes, Water Masers, Submillimeter Waves, Supergiant Stars, Water Vapor
Scientific paper
The first astronomical detection of the 10(29) - 9(36) transition of water vapor (H2O) at a frequency near 321 GHz is reported. The line was detected toward the star-forming regions W3(OH), W49N, W51 IRS 2, and W51 Main, and the supergiant star VY CMa. In all cases, probably, maser action is observed. Since the 10(29) level of H2O is at an energy of 1861 K above the ground state, the 10(29) - 9(36) line probes very hot molecular material. The 10(29) - 9(36) emission is found at velocities that are near the systemic velocities of the regions studied. The strongest features in spectra of the well-studied 22 GHz 6(16) - 5(23) transition are generally found at similar velocities. The 10(29) - 9(36) spectra do not show counterparts to the high-velocity features observed in the 22 GHz line, but this may be due to the limited sensitivity of the observations.
Melnick Gary J.
Menten Karl. M.
Phillips Thomas G.
No associations
LandOfFree
Submillimeter water masers 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 Submillimeter water masers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Submillimeter water masers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1841567