Long term variability of southern hemisphere water masers

Details Long term variability of southern hemisphere water masers Long term variability of southern hemisphere water masers

Publishing date

Apr 1991

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...88..177s&link_type=abstract

Journals

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 88, no. 1, April 1991, p. 177-187. Research supported by CNP

Science

Astronomy and Astrophysics

Field

Astrophysics

Additional info 3

Interstellar Masers, Interstellar Matter, Water Masers, Annual Variations, Southern Sky

Type

Scientific paper

Abstract

The intensities of several water vapor masers in the direction of H II regions were monitored, almost on a monthly basis, from December 1980 to December 1986. The spectral shape of all sources changed in time with the fluxes of individual velocity components varying on timescales of 10 to the 6th to 10 to the 7th sec. The evolutionary stage and the dynamics of three of the monitored sources, G331.5-0.1, GGD25 (NGC6334C), and Orion A, are discussed.

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