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IAUC 8473: 2005Q, 2005R, 2005S, 2005T, 2005U

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                                                  Circular No. 8473
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2005Q, 2005R, 2005S, 2005T, 2005U
     Several apparent new supernovae have been reported, all on
unfiltered CCD images except for 2005U, which was found by S.
Mattila (Stockholm Observatory), R. Greimel (Isaac Newton Group of
Telescopes), and C. Gerardy and W. P. S. Meikle (Imperial College,
London) on K_s-band images obtained as part of the ongoing 'Nuclear
Supernova Search' campaign with the William Herschel Telescope (+
LIRIS).  SN 2005Q was found by L. A. G. Monard (cf. IAUC 8454),
and SN 2005R was found by T. Boles (cf. IAUC 8469), while 2005S
and 2005T were found by H. Pugh, J. Graham, and W. Li (LOSS/KAIT;
cf. IAUC 8472).

SN      2005 UT        R.A.  (2000.0)  Decl.    Mag.     Offset
2005Q   Jan. 28.803   1 30 03.51  -42 40 48.4   17.2   22" W, 20" N
2005R   Jan. 13.971  11 14 56.81  +33 49 35.7   17.4   0".9 W, 3".2 N
2005S   Jan. 22.58   14 08 28.84  + 7 03 27.2   19.1   5".6 W, 0".9 S
2005T   Jan. 24.54   14 26 17.24  +26 14 47.8   18.4   7".2 W, 0".9 N
2005U   Jan. 30.30   11 28 33.22  +58 33 42.5   16.2   3".7 W, 4".9 S

Additional approximate unfiltered CCD magnitudes, by the respective
discoverers unless noted otherwise:  SN 2005Q in ESO 244-G31, 2004
Dec. 30.814 UT, [18.7; Jan. 29.757, 17.1 +/- 0.2.  SN 2005R in UGC
6274, 2004 Apr. 22, [19.5; Nov. 13, [19.5; 2005 Jan. 16.052, 17.4.
SN 2005S in UGC 9037, 2004 June 24.21, [20.0; 2005 Jan. 24.59, 19.2.
SN 2005T in IC 4423, 2004 June 27.21, [19.5; 2005 Jan. 31.53, 18.3.
SN 2005U in Arp 299, 2004 Dec. 25.41, [18.8 (Li, KAIT); Jan. 23.40,
18.2 (Li, KAIT).
     Monard adds that nothing is visible at the location of SN
2005Q on a Digitized Sky Survey image (limiting red mag 20.5).
Boles remarks that nothing is visible at the location of SN 2005R
on Digitized Sky Survey plates from 1992 (limiting red mag 21.0),
1990 (limiting blue mag 20.5), or 1983 (limiting visual mag 18.5);
he adds that comparison with the Konkoly Observatory plate of the
foreground variable designated 1985J (cf. IAUC 4059) shows that
2005R is 15" southwest of 1985J.  Li provides the following
position end figures for SN 2005U:  33s.13, 41".3.  Mattila et al.
note that their offset above for SN 2005U is with respect to the
K_s-band nucleus A of the luminous infrared galaxy Arp 299 (the
tabulated magnitude above for 2005U is also in the K_s band); they
estimate preliminary J-K = +0.4 +/- 0.5 for 2005U, adding that the
color indicates modest extinction.

                      (C) Copyright 2005 CBAT
2005 January 31                (8473)            Daniel W. E. Green

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