[IAUC] CBET 1193: 20080103 : SUPERNOVA 2008A IN NGC 634

IAUC mailing list quai en cfa.harvard.edu
Jue Ene 3 15:50:29 ARST 2008


                                                  Electronic Telegram No. 1193
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2008A IN NGC 634
     S. Nakano, Sumoto, Japan, reports the discovery of an apparent supernova
(mag 17.6) by Yoshimi Ichimura (Yoshimi-machi, Hiki-gun, Saitama-ken, Japan)
on numerous unfiltered CCD frames taken around Jan. 2.54 UT with a 0.28-m
f/8.1 Schmidt-Cassegrain reflector (limiting mag 19.3); Ichimura adds that
the new object is 16".6 west and 20".2 north of the center of NGC 634, and
that nothing was visible at this location on a frame taken on 2007 Nov. 18
(limiting magnitude 18.5) or on a frame taken by K. Itagaki (Teppo-cho,
Yamagata, Japan, 0.30-m reflector) on 2006 Aug. 20 (limiting mag 18.5).
Nakano provides his measurements of 2008A from a jpeg image (limiting mag
19.0) from Ichimura taken on 2008 Jan. 2.592:  mag 16.9; R.A. = 1h38m17s.38,
Decl. = +35o22'13".7 (equinox 2000.0), which is 14".6 west and 18".9 north
of the center of NGC 634.  K. Kadota (Ageo, Japan) writes that nothing is
visible at this position on a red Digitized Sky Survey image from 1989.
Additional magnitudes for 2008A:  2008 Jan. 3.391, 16.7 (Itagaki; position
end figures 17s.49, 13".2); 3.401, 16.7 (Y. Hirose, Kanagawa-ken,
Japan); 3.458, 17.0 (Kadota; position end figures 17s.48, 13".0); 3.525,
17.5 (Ichimura).
     SN 2006Q also appeared in NGC 634 (cf. IAUC 8664; CBET 377).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2008 CBAT
2008 January 3                   (CBET 1193)              Daniel W. E. Green



Más información sobre la lista de distribución Iauc