The flare star PP Ori

Details The flare star PP Ori The flare star PP Ori

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap.....38..103m&link_type=abstract

Astrophysics, Volume 38, Issue 2, pp.103-107

Astronomy and Astrophysics

Astrophysics

Scientific paper

We give the results of photographic, photoelectric, and spectral observations of the flare star PP Ori. The 109 photographic observations used, which were obtained on the 40″ Schmidt telescope of the Byurakan Observatory over a period of about 20 years, and four spectra obtained on the same telescope with a4° objective prism show no variation in brightness. Photoelectric observations in the UBVR bands using the 50cm and 60cm telescopes of the high-altitude Maidanak station of the Tashkent Astronomical Institute in 1987 and 1989 give grounds for suspecting a variation in brightness much larger than observational errors. Spectral observations of the star PP Ori made on the 2.6m telescope of the Byurakan Observatory show weak Hα emission. The results of all these observations show that PP Ori is an Orion variable of spectral class K7-M0 with absolute visual magnitude7 {ṡ/m} 5 8 {ṡ/m} 5.

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