Central Bureau for Astronomical Telegrams
IAUC 7690: 2001du; 2001dv
The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).
Read IAUC 7691
.dvi or
.ps format.
Circular No. 7690
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)
SUPERNOVA 2001du IN NGC 1365
R. Evans, Hazelbrook, N.S.W., reports his visual discovery
with a 0.31-m reflector on Aug. 24.7 and 25.7 UT of an apparent
supernova (mag about 14.0) located about 90" west and 10" south of
the nucleus of NGC 1365, and about 20" west of a foreground star of
mag about 15.5. Evans adds that the new object was not seen on
Aug. 23.7 under poorer conditions. A confirming CCD image obtained
by G. Bock and P. Marples (Edens Landing, Queensland; 0.25-m
Schmidt-Cassegrain reflector) shows SN 2001du at mag about 14.1 on
Aug. 24.79, and Bock provides the following approximate position
for the new object: R.A. = 3h33m28s.7, Decl. = -36o08'32" (equinox
2000.0). G. J. Garradd, Loomberah, N.S.W., adds that SN 2001du,
which is not visible to mag about 18.5 on an image taken on Aug.
15.76, appears at the western end of the galaxy's bar and is
superimposed on some H II regions. M. Salvo and B. Schmidt,
Australian National University (ANU); M. Ashley and A. Phillips,
University of New South Wales (UNSW); and C. Stubbs, University of
Washington, report that SN 2001du is present at V = 14.8 +/- 0.5 on
a prediscovery CCD image taken with the UNSW Automated Patrol
Telescope at Siding Spring on Aug. 23.81. It also appears at V =
15.2 +/- 0.1 on images taken by P. Francis (ANU) with the Mt.
Stromlo 1.9-m telescope on Aug. 25.65. Schmidt adds that the new
object is not visible on a Digitized Sky Survey (DSS) image. A.
Hale, Las Cruces, NM, reports that a visual observation of SN
2001du on Aug. 26.47 yields mag 14.2 (agreeing that nothing is
present at that location on the red DSS image).
SUPERNOVA 2001dv IN MCG +09-27-71
T. Puckett, Mountain Town, GA; and D. George, Ottawa, ON,
report the discovery of an apparent supernova (mag 18.5) on an
unfiltered CCD frame (limiting mag 20.0) taken with the Puckett
Observatory 0.60-m automated supernova patrol telescope on Aug.
23.15 UT. SN 2001dv is located at R.A. = 16h44m56s.04, Decl. =
+51o15'25".8 (equinox 2000.0), which is 3".0 east and 5".8 south of
the center of MCG +09-27-71. The new object was confirmed on CCD
frames taken on Aug. 24.19 with a 0.40-m reflector by J. Newton,
Osoyoos, BC. The object was also confirmed on unfiltered images
taken by Puckett and M. Marcus on Aug. 25.19. SN 2001dv is not
present on images taken by Puckett on 1999 June 12, 1999 Aug. 20,
2000 Mar. 8, Apr. 16, and May 21 (limiting mag about 20.5), neither
is it present on Palomar Sky Survey images taken on 1992 June 3,
1990 Apr. 26 (limiting mag about 21.0), and 1954 June 29 (limiting
mag about 19.7).
(C) Copyright 2001 CBAT
2001 August 26 (7690) Daniel W. E. Green
Read IAUC 7691
.dvi or
.ps format.
Our Web policy. Index to the CBAT/MPC/ICQ pages.
