Spectrophotometry of peculiar B and A stars. XIII - HD 51418, 53 Camelopardalis, 78 Virginis, and Kappa PISCIUM

Details Spectrophotometry of peculiar B and A stars. XIII - HD 51418, 53 Camelopardalis, 78 Virginis, and Kappa PISCIUM Spectrophotometry of peculiar B and A stars. XIII - HD 51418, 53 Camelopardalis, 78 Virginis, and Kappa PISCIUM

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...51..365p&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 51, Mar. 1983, p. 365-384.

Astronomy and Astrophysics

Astrophysics

22

A Stars, B Stars, Peculiar Stars, Stellar Spectrophotometry, Absorption Spectra, Continuous Spectra, Reference Atmospheres, Spectral Energy Distribution, Spectrum Analysis, Stellar Atmospheres, Tables (Data)

Scientific paper

Optical region spectrophotometry of four Ap stars having moderate to cool temperatures shows that the gamma 4200 and gamma 5200 broad absorption features are strong in all four stars. Except for a slight variability of the gamma 5200 feature in HD 51418, there is no convincing evidence for variation of these features with phase in any of the stars. The strength of the broad absorption features is not strongly correlated with the slope of the red end of the Paschen continuum or with the apparent amount of differential absorption present in the shortward end of the Paschen continuum. The star HD 51418 is an outstanding spectrum and photometric variable but shows weak or no variations of the broad absorption features. Further study of this and several similar stars should help clarify the origin of the broad absorption features.

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