Multicolor photoelectric and photographic observations of the long-period variable Y Ori

Details Multicolor photoelectric and photographic observations of the long-period variable Y Ori Multicolor photoelectric and photographic observations of the long-period variable Y Ori

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap.....38....1m&link_type=abstract

Astrophysics, Volume 38, Issue 1, pp.1-6

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Results of observations of the long-period variable Y Ori are presented. The photoelectric observations in UBVR were made at the 60-cm telescope of the high-altitude Maydanak station of the Tashkent Astronomical Institute during the autumn of 1989. The UBVR lightcurves as well as the variations in the color indices U-B, B-V, and V-R are presented. The photographic observations were made at the 40″ Schmidt telescope of the Byurakan Observatory and at the 70-cm Maksutov telescope of the Abastumani Observatory. A nebulosity was discovered around Y Ori in red light near the brightness maximum. Such a formation is observed for the first time, not only for Y Ori but also for long-period variables in general. The obtained results are discussed in this work.

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