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IAUC 8241: 2003jz, 2003ka,, 2003kb; 2003jh, 2003jg; V838 Mon

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IAUC number

                                                  Circular No. 8241
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVAE 2003jz, 2003ka, AND 2003kb
     Three apparent supernovae have been discovered:  SN 2003jz by
M. Armstrong (cf. IAUC 8226), and SNe 2003ka and 2003kb by D.
Singer, B. Beutler, and W. Li (via LOSS/KAIT; cf. IAUC 8236):

SN       2003 UT       R.A.  (2000.0)  Decl.   Mag.     Offset
2003jz   Nov. 13.18    9 46 28.67  +45 45 04.7  17.5  1" E, 4" S
2003ka   Nov. 16.2    23 03 43.28  +34 58 50.3  18.1  7".3 W, 7".9 S
2003kb   Nov. 18.5     6 16 12.59  +57 03 12.9  18.0  8".4 W, 7".0 N

Additional approximate magnitudes from the respective discoverers
(unless otherwise noted):  SN 2003jz in UGC 5225, 2002 Nov. 30 UT,
[19.0 (KAIT); 2003 Oct. 17.153, 16.0; Nov. 17.126, 17.5.  SN 2003ka
in MCG +06-50-20, Oct. 27.2 UT, [19.5; Nov. 18.2, 18.0.  SN 2003kb
in UGC 3432, Nov. 4.5, [19.5; 19.3, 18.0.  Armstrong adds that
nothing was visible at the location of SN 2003jz on Palomar Sky
Survey red and blue plates.

SUPERNOVAE 2003jh AND 2003jg
     D. A. Howell, University of Toronto, reports that preliminary
reduction of a spectrogram (range 400-1000 nm), taken with the Clay
6.5-m Magellan Telescope (+ LDSS2) on Nov. 17.3 UT, shows that SN
2003jh (cf. IAUC 8236) is a type-IIn supernova.  H_alpha has a
narrow peak atop a broader base (FWHM 5000 km/s); the redshift
measured from the narrow peak is z = 0.030, consistent with the
redshift of the host, MCG -02-11-30 (z = 0.0296, as listed by NED).
A spectrogram of SN 2003jg (cf. IAUC 8235) shows it to be a type-
Ib/c supernova, several weeks past maximum light.

     M. Tapia and P. Persi write:  "Due to a transcription error in
the reduction process, the magnitudes of V838 Mon reported on IAUC
8235 are incorrect.  The correct photometry, based on images
obtained with the 2.1-m telescope and mid-infrared camera (CID) at
San Pedro Martir on Oct. 5.5 UT is: [8.7 microns] = 1.37, [9.7
microns] = 0.99 [12.5 microns] = 0.56, [18.9 microns] = 0.01.  The
standard, beta Gem, was observed through a similar airmass."

                      (C) Copyright 2003 CBAT
2003 November 19               (8241)            Daniel W. E. Green

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