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Further evidence for the disputed constancy of the photometric standard 109 Virginis

1989; Institute of Physics; Volume: 101; Linguagem: Inglês

10.1086/132493

1538-3873

G. W. Lockwood, D. T. Thompson,

History and Developments in Astronomy

Results are presented from observations of 109 Vir made in the y filter of the uvby system between 1984 and 1988. The results suggest that there is no evidence for variablity of 109 Vir or 108 Vir. It is noted that, although these two stars are constant, microvariability at a level less than 1 percent is common among F, G, and K stars.