The type of variability of Herbig Ae/Be stars

Details The type of variability of Herbig Ae/Be stars The type of variability of Herbig Ae/Be stars

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...89..319b&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 89, no. 2, Aug. 1991, p. 319-334.

Astronomy and Astrophysics

Astrophysics

71

A Stars, B Stars, Light Curve, Pre-Main Sequence Stars, Variable Stars, Color-Magnitude Diagram, Variability

Scientific paper

The paper presents a list of 23 Herbig Ae/Be stars and Herbig Ae/Be star candidates, compiled on the basis of 2 to 8 years of observations in the Stromgren photometric system. Results of the study show that spectral type A0 separates the stars showing large variations in their brightness from stars showing small variations, with the later spectral type stars being the more variable. The behavior of the stars in the color-magnitude diagram could be divided into three classes: (1) class R, in which there is a monotonic dependence of the color index on visual brightness, (2) class CR, in which this dependence is not monotonic, and (3) class RB, in which there is no dependence. It was also found that the behavior of a star in the color-magnitude diagram is dependent not on the spectral type but on the size of the variation in brightness.

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