IRAS photometry of dust shells around hydrogen-deficient stars

Details IRAS photometry of dust shells around hydrogen-deficient stars IRAS photometry of dust shells around hydrogen-deficient stars

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...152...58w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 152, no. 1, Nov. 1985, p. 58-62.

Astronomy and Astrophysics

Astronomy

42

B Stars, Binary Stars, Carbon Stars, Infrared Astronomy Satellite, Infrared Photometry, R Coronae Borealis Stars, Stellar Envelopes, Astronomical Catalogs, Spectral Energy Distribution, Stellar Temperature

Scientific paper

The Infra-Red Astronomical Satellite (IRAS) catalog was examined for fluxes for 33 stars deficient in hydrogen. Fluxes are presented for 12 R Coronae Borealis stars (RCB stars), two extreme helium stars closely related to the RCB stars and four helium-rich close binary stars. The fluxes are fitted by black body energy distributions to estimate temperatures for the dust shells found around the stars, ranging from 400 K to 1000 K. Spectra from IRAS Low Resolution Spectrometer (LRS) are given for R CrB, RY Sgr and Nu Sgr. It is confirmed that the typical extreme helium stars and hydrogen-deficient carbon stars do not have dust shells observable around them. The cool dust shell around MV Sgr is confirmed, with a temperature of 450-650 K.

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