A-type shell stars and infrared sources

Details A-type shell stars and infrared sources A-type shell stars and infrared sources

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158..325j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 325-328.

Astronomy and Astrophysics

Astrophysics

41

A Stars, Emission Spectra, Infrared Spectra, Line Spectra, Shell Stars, Stellar Envelopes, Astronomical Catalogs, Interstellar Matter, Point Sources, Stellar Temperature

Scientific paper

Following the discovery of a dust cloud around an A-type shell star the authors examine the situation of all known Ae/A shell stars. They have found 19 stars of this group observed by IRAS, and of these 19, 8 are infrared anomalous emitters (IAE). The temperatures of the anomalous emitting sources are of the order of 50 - 400K, although three cases require two superposed cool sources. The proportion of IAE's among Ae/A shell stars is very high, when compared to a sample of non-shell A-type stars. This suggests a close link between the membership in the group and IAE.

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