Portal de Periódicos da CAPES

Some evidence for variation of the spectrophotometric standard 109 Virginis

1982; Institute of Physics; Volume: 94; Linguagem: Inglês

10.1086/131040

1538-3873

Benjamin J. Taylor,

Solar and Space Plasma Dynamics

The existing spectrophotometric data for the standard star 109 Vir show evidence for intermittent variation during the years 1966-68, and again after 1977. During both epochs, the variation has been of a nature to increase (b-y) and decrease m1 by roughly equal amounts. Evidence for variation of this type also appears in Stromgren data obtained by Perry during the early 1960s. The amount of this latter variation is very similar to that predicted from the later-epoch scans.