Computer Science
Scientific paper
Oct 1880
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1880natur..22..603k&link_type=abstract
Nature, Volume 22, Issue 574, pp. 603 (1880).
Computer Science
Scientific paper
LORD LINDSAY'S Dun Echt Circular, No. 10, which I received on Saturday morning, October 23, prepared me to watch for a probable minimum of M. Ceraski's remarkable variable star B.D. + ss 81° 25' on the same night. From my observations the minimum appears to have occurred at about nh. iom. G.M.T., the star then being of about 9.1 magnitude. At 9h. 5m. I noted it about equal to a neighbouring star, B.D. + 81° 30', which I gauged 8.1 mag., and at 13h. 50m. it had regained the same magnitude. When about minimum I thought the variable to be slightly ruddy, but as it brightened up again it lost this tint and appeared to be white, or bluish white, as when I first observed it. It has a small bluish 11½ mag. companion, the P. and D. of which I roughly estimated to be 60° and 10'' respectively. The star was observed by Carrington in 1855, on December 19, 21, and 30, his estimated mags. being 8.0, 8.0, 9.0. Possibly the star may have been near minimum at his third epoch.
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