[vsnet-chart 201] BV sequence for SN 1992ar

[Brian Skiff <bas@lowell.lowell.edu>]

     In a paper posted this week to the Los Alamos preprint server,
Clocchiati et al. (1999 ApJ, submitted) provide a deep BV sequence for the
distant supernova SN 1992ar.  This event was located in a tight trio of
galaxies at redshift of z=0.15.  Below I show USNO-A2.0 coordinates for the
sequence stars along with the BV data.  Their R-band data unfortunately lead
to V-R colors inconsistent with B-V for the same stars (they admit having
observed R magnitudes in a non-standard way), so I have omitted them here.
The uncertainties on the faintest stars below are ~0.1 mag.
     This sequence, by the way, compliments existing data in the same sky
survey field, and extends the calibration past mag. 20.

\Brian



Name                  RA  (2000)  Dec    s     GSC       V    B-V
SN 1992ar 1        23 17 24.4  -44 39 34 A             16.15  0.65
SN 1992ar 2        23 17 23.2  -44 38 58 A             18.48  0.89
SN 1992ar 3        23 17 21.0  -44 38 10 A             16.72  1.14
SN 1992ar 4        23 17 30.2  -44 38 00 A             17.61  1.44
SN 1992ar 6        23 17 31.3  -44 39 46 A             17.05  0.67
SN 1992ar 7        23 17 34.5  -44 36 54 A             17.99  0.62
SN 1992ar 11       23 17 28.0  -44 37 19 A             20.04  1.38
SN 1992ar 13       23 17 35.1  -44 37 17 A             20.22  1.44

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