Some evidence for variation of the spectrophotometric standard 109 Virginis

Details Some evidence for variation of the spectrophotometric standard 109 Virginis Some evidence for variation of the spectrophotometric standard 109 Virginis

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..663t&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 94, Aug. 1982, p. 663-668.

Astronomy and Astrophysics

Astronomy

11

Reference Stars, Stellar Spectrophotometry, Variable Stars, Standard Deviation, Statistical Analysis, Stellar Color

Scientific paper

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.

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