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- W29232700 abstract "The results of U,B,V,R,I,H,K,L,M,N photometry of R CrB from 1977 May 26 to 1978 Jan 8 are reported. In the optical region the star exhibited a complex color variability during minimum light, but on the whole the star reddened as it became brighter. In the infrared the flux at minimum light in the I and H bands weakened relative to the K band, suggesting that energy is redistributed from the near infrared to longer wavelengths. The 1--10 ..mu.. energy distribution may be represented as the combined emission of an outer, optically thin dust shell at 700 /sup 0/K temperature and dust clouds at 1850 /sup 0/K that screen the star. The dust grains would have a radius of 0.07--0.09 ..mu..; the mean distance of the absorbing clouds from the center of the star would be R=100 R/sub sun/, and their mass would be 5.3 x 10/sup -11/ M/sub sun/. The outer dust envelope would have a mass of 1.0 x 10/sup -8/ M/sub sun/ and a radius of at least 10/sup 3/ R/sub sun/. The bolometric luminosity of the star at minimum light is 5.1 x 10/sup 36/ erg/sec." @default.
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- W29232700 date "1979-09-01" @default.
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- W29232700 title "Optical and infrared photometry of R Coronae Borealis at the 1977 minimum" @default.
- W29232700 hasPublicationYear "1979" @default.
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