Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985cha%26a...9..296l&link_type=abstract
Chinese Astronomy and Astrophysics, Volume 9, Issue 4, p. 296-299.
Astronomy and Astrophysics
Astrophysics
Scientific paper
We give results of photoelectric photometry and spectral observations of ɛ Aur during its 1982-1984 ingress and total eclipse. Narrow-band light curves and variations in radial velocity within a night resulting from autoregression analysis all indicate short time scale variations in the F supergiant primary on the order of hours or fractions thereof. Fluctuations with an amplitude of +/-25 Km/s and a period of 400 d appear to be present in the measured radial velocity of the primary during ingress and totality. Obvious changes in the Hα profile were also observed: around the second contact of the total eclipse, there was emission in the blue wing; while around the third contact of the atmosphere eclipse, there was emission in the red wing.
Cha Guang-Wei
Li Xiao-Yu
Liu Xue-Fu
Peng Song-Chuan
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