Optical spectrum and variability of KR Aurigae

Details Optical spectrum and variability of KR Aurigae Optical spectrum and variability of KR Aurigae

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sval....3..279d&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 3, Nov. 1977, p. 510-514.) Soviet Astronomy Letters, vol. 3, Nov.-Dec. 1977, p. 279-281

Astronomy and Astrophysics

Astronomy

2

Continuous Spectra, Spectral Energy Distribution, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Electrophotometry, Emission Spectra, H Alpha Line, X Ray Sources

Scientific paper

Results are reported for spectral, UBV photoelectric photometric, and spectrophotometric observations of the variable star KR Aur. It is found that the continuum energy distribution of the star can be represented by a power law with an exponent of zero to 0.4, that the full width at half maximum of the H-alpha line is about 900 km/s, and that the H-alpha flux is approximately 4 by 10 to the -13th power erg/sq cm per sec. Continuum variability is observed on time scales of several hours (U amplitude of about 0.6 magnitude) to several tens of seconds (U amplitude of about 0.4 magnitude). KR Aur is shown to resemble the X-ray source Sco X-1 and certain dwarf-containing close binary systems in terms of the nature of its variability and its optical continuum energy distribution.

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