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(1993 Apr. 17)
subject: RE:M81 sequence
Dear Dr. Harold Corwin,
Thank you for your e-mail. I have received your "M81 sequence" from
the nova network. Therefore your mail must have been successfully
received and distributed.
The only published photometry of the star "C" I have obatined is
that from Richmond. The differential magnitudes are as follows:
Uncalibrated magnitudes and colors relative to star A
star V (V-R) (R-I) GSC "V"
==========================================================
B 0.51 -0.09 +0.06 -0.9
C 3.10 +0.01 +0.04 +2.3
F 3.27 +0.16 +0.04
SN -0.69 -0.31 -0.22
If we take V=11.90, V-R=0.30, V-I=0.60 for star "B" (in your mail),
star "A" will have V=11.39, V-R=0.21, V-I=0.57, and star "C" V=14.49,
V-R=0.31, V-I=0.62.
The V magnitude of "C" is consistent with your estimate from infrared
photometry.
Regards,
Taichi Kato
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
