An IRAS survey of IR excesses in G-type stars

Abstract

view Abstract Citations (36) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS An IRAS Survey of Infrared Excesses in G-Type Stars Odenwald, S. F. Abstract The IRAS Point Source Catalog has been searched for infrared sources associated with G-type stars. Of the 3803 IRAS sources identified in this way, 28 were found to have enhanced emission at lambda greater than 25 microns characteristic of circumstellar material. The majority of the IR-excess stars were supergiants whose inferred mass loss rates were found to be comparable to those of red giants. One of the stars, IRAS 11059-7721, is a G main-sequence star whose circumstellar medium (CSM) has 20,000 times the optical depth of Vega's CSM. The physical characteristics of the circumstellar emission for this sample are described, and several scenarios for its existence are examined in light of the IRAS data. Publication: The Astrophysical Journal Pub Date: August 1986 DOI: 10.1086/164456 Bibcode: 1986ApJ...307..711O Keywords: G Stars; Infrared Astronomy; Late Stars; Spaceborne Astronomy; Supergiant Stars; Astronomical Catalogs; Continuous Spectra; Emission Spectra; Infrared Astronomy Satellite; Stellar Envelopes; Astrophysics; INFRARED: SOURCES; STARS: CIRCUMSTELLAR SHELLS; STARS: SUPERGIANTS full text sources ADS | data products SIMBAD (28)