Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...84..179c&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 84, no. 1, July 1990, p. 179-225. Research supported by MPI
Astronomy and Astrophysics
Astrophysics
128
Astronomical Catalogs, Interstellar Masers, Water Masers, Astronomical Spectroscopy, Maser Pumping, Radio Emission
Scientific paper
Results are reported from a 22.2-GHz H2O line survey of all the known maser sources north of -30 deg. Of the 509 sources observed, 203 were detected with an average detection limit of 9 Jy. The data are presented in an atlas and a table form and are intended to constitute an homogeneous reference data base for further study of the source variability. A brief description of the instrumentation is given. Comparison of the present results with those given in the literature indicates that most of the masers vary, with only 20 percent of the sources remaining constant, within the observational uncertainty.
Bettarini A.
Catarzi M.
Cesaroni Riccardo
Comoretto Gianni
Curioni G. P.
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