Infrared photometry of FG SGE

Details Infrared photometry of FG SGE Infrared photometry of FG SGE

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986afz....25..453t&link_type=abstract

(Astrofizika, vol. 25, Nov.-Dec. 1986, p. 453-459) Astrophysics (ISSN 0571-7132), vol. 25, no. 3, May 1987, p. 616-620. Translat

Astronomy and Astrophysics

Astrophysics

7

Astronomical Photometry, Infrared Photometry, Supergiant Stars, Interstellar Extinction, Radii, Spectral Energy Distribution

Scientific paper

The results of optical and IR photometry of FG Sge are presented. It is shown that the decrease in the optical brightness accompanied by reddening that began at the end of the sixties still continued in 1985. In comparison with 1970-1972, the reddening of the star in the IR range in 1985 was accompanied by an increase in its IR magnitude. The spectral class of FG Sge in 1985 corresponded to G(1 + or - 0.5)I; for r = 4.1 kpc, the radius of the star is 95 solar radii and the luminosity is 8900 solar luminosities.

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