Optical and infrared photometry of R CrB during the 1977 minimum

Details Optical and infrared photometry of R CrB during the 1977 minimum Optical and infrared photometry of R CrB during the 1977 minimum

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sva....23..567s&link_type=abstract

Astronomicheskii Zhurnal, vol. 56, Sept.-Oct. 1979, p. 1007-1011. In Russian.

Astronomy and Astrophysics

Astronomy

7

Infrared Astronomy, Infrared Photometry, R Coronae Borealis Stars, Stellar Spectrophotometry, Ubv Spectra, Infrared Radiation, Line Spectra, Near Infrared Radiation, Spectral Energy Distribution, Stellar Temperature

Scientific paper

Results of UBVRJHKLMN photometry of R CrB from May 26, 1977 to January 8, 1978 are presented. Color variations in the optical bands during the minimum period are found to have a complex character. A general tendency is indicated that the brighter the star the redder it is. IR flux in the I and H bands was found to be smaller in relation to the K band in the minimum period, thus indicating that the energy distribution is shifted from the near-IR to longer wavelengths. It is also shown that the energy distribution at 1-10 microns can be represented by a combination of two sources: an external optically thin dust shell with a temperature of 700 K and dust clouds (1850 K) which absorb light from the star.

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