A southern hemisphere ammonia survey.
Abstract
A spectral line survey for interstellar NH3 is being carried out using the 64-m telescopes at Parkes and Tidbinbilla. Both telescopes are equipped with K-band maser receivers yielding system temperatures below 100K. The preliminary survey is being made with the Parkes antenna (beam = 1.35 arcmin), with follow-up mapping of the more interesting sources at Tidbinbilla (beam = 0.9 arcmin). The selected sources have in general been H II regions from the H2CO surveys made at Parkes. Statistical results from initial observations of the (1,1), (2,2), and (3,3) lines in the preliminary survey are presented.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- 1986
- DOI:
- 10.1017/S1323358000018439
- Bibcode:
- 1986PASA....6..504P
- Keywords:
-
- Ammonia;
- Astronomical Spectroscopy;
- Interstellar Gas;
- Line Spectra;
- Southern Sky;
- Brightness Temperature;
- H Ii Regions;
- Radial Velocity;
- Statistical Analysis;
- Astrophysics