Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apjs..128..371c&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 128, Issue 1, pp. 371-385.
Astronomy and Astrophysics
Astronomy
13
Infrared: Ism: Lines And Bands, Ism: Molecules, Methods: Laboratory, Molecular Data
Scientific paper
In order to facilitate further studies of water in the interstellar medium, the envelopes of late-type stars, jets, and shocked regions, the frequencies of 17 newly measured H216O transitions between 0.841 and 1.575 THz are reported. A complete update of the available water line frequencies and a detailed calculation of unmeasured rotational transitions and transition intensities as a function of temperature are presented for the ground and ν2=1 state levels below 3000 cm-1 of excitation energy. The new terahertz transitions were measured with a recently developed laser difference frequency spectrometer. Six of these transitions arise from the ν2=1 state, and the other 11 are in the ground state; all have lower state energies from 700 to 1750 cm-1 and should be accessible to Stratospheric Observatory For Infrared Astronomy (SOFIA) through the atmosphere. The transitions near 0.850 THz are accessible from the ground with existing receivers. Observations of the newly measured ν2=1 state transitions, which include the 11,1-00,0 fundamental at 1.2057 THz and five other very low J transitions, should provide valuable insights into role played by the ν2=1 state in the cooling dynamics of jets, shocks, masers, and strongly infrared-pumped regions. The line list is presented to assist in the planning of observational campaigns with the Far-Infrared Space Telescope (FIRST) and other proposed space missions with which a full suite of water observations can be carried out.
Blake Geoffrey A.
Chen Pin
Matsuura Shuji
Pearson James C.
Pickett Herbert M.
No associations
LandOfFree
Submillimeter-Wave Measurements and Analysis of the Ground and ν2=1 States of Water 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-Wave Measurements and Analysis of the Ground and ν2=1 States of Water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Submillimeter-Wave Measurements and Analysis of the Ground and ν2=1 States of Water will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1127693