Variability in the emission of water maser S128

Details Variability in the emission of water maser S128 Variability in the emission of water maser S128

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995azh....72..468b&link_type=abstract

Astronomicheskij Zhurnal, vol. 72, p. 468

Astronomy and Astrophysics

Astronomy

5

Radial Velocity, Water Masers, Maser Outputs, Astronomical Spectroscopy, Interstellar Masers, Radio Telescopes, Molecular Clouds

Scientific paper

A catalog of the spectra of maser emission from the H2O source S128 obtained in 1981-1994 is presented. The observations were carried out using the RT-22 radio telescope of the Pushchino Radio Astronomy Station of the Lebedev Institute of Physics. Two variability components of the total flux were found: long-periodic and bursting. An anticorrelation between the total fluxes of two portions of the spectrum separated by a velocity -73 km/s was discovered. The velocities of these portions of the spectrum may correspond to the velocities of two apparently colliding clouds. Possible origins for the evolution of total flux, the mean weighted radial velocity, and the fundamental parameters of individual emission peaks are discussed.

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