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The BAAVSS light curve for R CrB between 1921-2000 can be seen at http://vsnet.britastro.org/vss/gifl/00107.gif It's difficult to make out the minimum magnitude from this plot (because of the scale used), but it's obvious R CrB has not reached as faint as 14.8 in this period. A check of the database will give the precise minimum reached, but it looks to me around 14.5 as the faintest (1949). Maybe Roger Pickard can shed more light on this! regards, Gary ------------------------------------------------------------- Gary Poyner garypoyner@blueyonder.co.uk gp@star.sr.bham.ac.uk http://vsnet.garypoyner.pwp.blueyonder.co.uk/varstars.html -------------------------------------------------------------- ----- Original Message ----- From: <Afoevb@aol.com> To: <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp> Sent: Wednesday, March 12, 2003 10:40 AM Subject: [vsnet-chat 6140] R CrB deepest minimum > In VSNET-CHAT, Dr. Kato wrote : R CrB: how deep was the deepest minimum? > According to the GCVS, the minimum magnitude of R CrB is given as 14.8v > (possibly a visual magnitude). The star doesn't seem to have reach far > fainter than V=14.0 recently. Could there have been a real such a deep > minimum in the past, or could it have been a systemtic difference between the > old and new comparison stars? Regards, Taichi Kato > In our AFOEV database for R CrB (59048 observations) one can find > mv 14.1 51422 Ripero Jose > mv 14.0 51422.3 Verdenet Michel > 51422.4 Verdenet Michel > 51478 Verdenet Michel > mv 13.9 45631 Feijth Henk > 51420 Verdenet Michel > 51421 Ripero Jose > 51427 Vohla Frank > 51476 Muyllaert Eddy > sequence most AFOEV=AAVSO or AAVSO charts > E. Schweitzer AFOEV > afoevb@aol.com >
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