VLA Observations of Ag-Pegasi R-Aquarii and R-Leonis at 6-CENTIMETERS

Details VLA Observations of Ag-Pegasi R-Aquarii and R-Leonis at 6-CENTIMETERS VLA Observations of Ag-Pegasi R-Aquarii and R-Leonis at 6-CENTIMETERS

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245..988g&link_type=abstract

Astrophysical Journal, Vol.245, P. 988, 1981

Astronomy and Astrophysics

Astrophysics

8

Scientific paper

AG Pegasi's nebulosity was found to have a half-power diameter of about 1" or 1016 cm. Its 6 cm flux density increased from 6.2 mJy in 1979 January to 8.0 mJy in 1980 May. Including previous radio observations, we estimate a spectral index of α ≍ 0.7, suggestive of emission from a mass outflow. However, theoretical mass outflow models predict an angular size somewhat smaller than observed. Perhaps a nonspherically symmetric mass-loss model is required. R Aquarii was unresolved (θ < 2"), and there is no obvious correlation between its radio and optical variations. A stringent upper limit of 0.7 mJy for R Leonis is consistent with the possibility that nonsymbiotic Miras are less likely to have radio continuum emission.

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