Observations of the Longperiod Variable Star Y-Orionis

Details Observations of the Longperiod Variable Star Y-Orionis Observations of the Longperiod Variable Star Y-Orionis

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988afz....28..329m&link_type=abstract

Astrophysics, Vol.28, NO. 2, P. 193, 1988

Astronomy and Astrophysics

Astrophysics

6

Scientific paper

On the basis of photographic multicolour observations of Y Ori made in 1969 - 1983 the following results are obtained: the period of the Y Ori star light variations is P = 270d.5±0d.2. The colour (U-B) of the Y Ori radiation is very blue ((U-B) < 0), before and after the minimum light, while near the maximum it is very red: (U-B) = +1m.4. The limits of light variations of Y Ori in UBVRI bands of the spectrum are determined and the photographic light curve is constructed. A nebulosity around Y Ori is discovered near the maximum of brightness in red light.

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