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IAUC 7940: 2002ed; V2275 Cyg; 2002ap

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IAUC number

                                                  Circular No. 7940
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)

SUPERNOVA 2002ed IN NGC 5468
     B. Monard, Pretoria, South Africa, reports the discovery of an
apparent supernova (R mag 16.5) on unfiltered CCD frames taken with
the Bronberg Observatory 0.31-m telescope on July 27.77 UT. The new
object was confirmed on CCD frames taken on July 28.70 (R mag 16.4)
by Monard. SN 2002ed is located at R.A. = 14h06m38s.2, Decl. =
-5o27'29" (equinox 2000.0), which is 55" east and 15" south of the
center of NGC 5468. The object does not appear on CCD frames taken
by Monard on July 2 and 23 (limiting R mag 17.5). W. Li, University
of California at Berkeley, confirms the existence of the object on
LOTOSS (cf. IAUC 7906) KAIT CCD images on July 24 to 29. NGC 5468
is the host galaxy for SN 1999cp (cf. IAUC 7205) and SN 2002cr (cf.
IAUC 7890).

     C. C. Venturini, D. K. Lynch, R. J. Rudy, S. Mazuk, The Aerospace
Corporation; R. C. Puetter, Center for Astrophysics and Space Science,
Univsersity of California at San Diego; and R. B. Perry, NASA Langley
Research Center, report 0.8-2.5 micron spectroscopy using the Lick
Observatory 3-m telescope and the Aerospace Corporation Near-Infrared
Imaging Spectrograph on July 19.42 UT (about 335 days after discovery):
"High-energy coronal lines dominate the spectrum with [Si X] at 1.4301
micron being the strongest. Other prominent coronal lines include
[Si IX] at 1.2520 micron, [Al IX] at 2.0394 micron, and the rarely
seen lines of [Fe XIII] at 1.0747 and 1.0798 micron. Many of the lower
excitation coronal lines like [Ca VIII] and [Si VI] are weak or absent
from the spectrum. He II lines and He I at 1.0830 micron are also
present. There are large ranges in the emission line widths: the H I
and He II lines have FWHM of approximately 900 km/s while the value
for the [Si X] feature is 3400 km/s."

    K. Sarneczky, B. Sipocz, Budapest, Hungary; and J. Vinko, Szeged,
Hungary, report: "We have measured Johnson-Cousins CCD magnitudes with
the 0.60-m Schmidt at Konkoly Observatory: July 27.05 UT, V = 17.12
+- 0.05; R= 16.24 +- 0.05; I = 16.05 +- 0.05. Compared with the data
by Y. Yoshii et al. (cf. IAUC 7930), the light curve decline rates are
0.022, 0.019 and 0.024 mag/day in V, R and I bands, respectively."

                      (C) Copyright 2002 CBAT
2002 July 29                   (7940)          Carl W. Hergenrother

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