Interferometric observations of 43 and 86GHz SiO masers in R Cassiopeiae.

Details Interferometric observations of 43 and 86GHz SiO masers in R Cassiopeiae. Interferometric observations of 43 and 86GHz SiO masers in R Cassiopeiae.

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...312..950c&link_type=abstract

Astronomy and Astrophysics, v.312, p.950-956

Astronomy and Astrophysics

Astrophysics

12

Interferometry, Masers: Sio, Stars: Late-Type, Individual Objects: Rcas

Scientific paper

We have undertaken interferometric studies of the SiO maser emission from the nearby Mira-type star RCassiopeiae. The v=1, J=1->0 transition at 43GHz was observed with a European very long baseline (VLB) interferometer, and the v=1, J=2->1 transition at 86GHz with the IRAM connected interferometer on Plateau de Bure. These observations show a complex spatial/velocity SiO emission pattern, and reveal the presence of both compact and extended SiO emission. The similarities found in our 43 and 86GHz maps may indicate that both emissions originate from the same volume of gas. Confirmation of such result would provide some constraint on the SiO pumping mechanisms.

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