IRAS observations of Be stars. I - Statistical study of the IR excess of 101 Be stars

Details IRAS observations of Be stars. I - Statistical study of the IR excess of 101 Be stars IRAS observations of Be stars. I - Statistical study of the IR excess of 101 Be stars

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...176...93c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 176, no. 1, April 1987, p. 93-106. ZWO-supported research.

Astronomy and Astrophysics

Astronomy

126

B Stars, Infrared Astronomy, Spaceborne Astronomy, Statistical Analysis, Astronomical Catalogs, Infrared Astronomy Satellite, Stellar Color, Stellar Envelopes, Stellar Mass Ejection

Scientific paper

IRAS observations at 12, 25, and 60 microns are reported for 101 Be stars from the Bright Star Catalog of Hoffleit (1982). The data are presented in extensive tables and graphs and analyzed. Normal-star color-color relations are used to derive the IR excesses, and the position of the Be stars on the (12-60) versus (12-25) diagram is shown to correspond to free-free emission from a star surrounded by ionized gas with density inversely proportional to r exp 2.5-3. An apparent upper limit on the degree of optical polarization and a link between large polarization and large IR excess are found.

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