Far-infrared observations of FU Orionis

Details Far-infrared observations of FU Orionis Far-infrared observations of FU Orionis

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..170s&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 170-176.

Astronomy and Astrophysics

Astronomy

13

Infrared Astronomy, Peculiar Stars, Stellar Envelopes, Stellar Luminosity, Stellar Radiation, Variable Stars, Carbon Monoxide, Far Infrared Radiation, Molecular Clouds, Radiant Flux Density

Scientific paper

The peculiar star FU Orionis is located in the southeast extension of Barnard 35 (B35), a bright-rimmed molecular cloud, and in the more extended, low-density region around Lambda Orionis. In connection with the present investigation, far-infrared observations of the star were undertaken in order to obtain a better estimate of the total luminosity of FU Ori and to better understand its relationship with the B35 cloud. FU Orionis was observed on 1981 January 23 with the 90 cm telescope on board the NASA Kuiper Airborne Observatory. The far-infrared results suggest that much of the radiation from the stellar source does not interact with either the 225 K circumstellar dust or the exterior 15 K material. The total luminosity of FU Ori is now seen to be about the same as the visible luminosity, and at the distance to B35 ridge dilution would make any isotropic effects negligible.

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