Near infrared excesses in Be stars

Details Near infrared excesses in Be stars Near infrared excesses in Be stars

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..110f&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Feb.-Mar. 1981, p. 110-118. Research supported by the Comision de I

Astronomy and Astrophysics

Astronomy

18

B Stars, Infrared Astronomy, Near Infrared Radiation, Stellar Spectrophotometry, Astronomical Catalogs, Colorimetry, H Alpha Line, Main Sequence Stars, Spectral Bands

Scientific paper

Sixty-eight bright Be stars were observed in the R and I bands of the Johnson system. Nearly all of them lie above the main sequence in a (B - V,V- I) diagram, which is interpreted as a near-infrared excess (ΔI) in their energy distributions. From the computed difference with the standard main-sequence relation, a correlation of this ΔI value with the emission strength of the Hα line, previously defined as eα is found. On the other hand, the ultraviolet excesses derived from the Q values shows no evidence of correlation with the infrared excesses. But a correlation with polarimetric data appears reliable.

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