[vsnet-chat 2380] Re: SN1999em sequence problem (Ripero)

[bas@mailhost.lowell.edu (Brian Skiff)]

     The list of GSC stars that Hitoshi Yamaoka sent with his discussion
of SN 99em shows the GSC magnitudes, which in this region are nearly B
(blue), and thus are inappropriate for visual use.  This is reason that
Jose' Ripero's esitmate using t
that sequence is so much fainter.  The AAVSO sequence is the one on the
Thompson & Bryan chart, which is based on photoelectric measurements by
Alcaino and Liller, and thus is to be preferred to the GSC values.

\Brian

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