Supernova 2002cf in NGC 4786

This page is devoted to information on Supernova 2002cf in NGC 4786 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page.  Information on the original web pages for many of these images can be found on the updates and links web pages.

Yet another LOTOSS discovery. This one is in an elliptical galaxy, found to be a type Ia We have a DSS Photometry reference image made by Odd Trondal.  Icon generated from the LOTOSS discovery image.

Web pages dedicated to this SN.
• SNWeb (formerly AUDE) has a 2002cf page

The following is a list of images of this SN, in chronological order. Click on the name in the "observer" column to see the image. Times and dates are in UT unless otherwise noted. If you know of any others, please tell me!

Image Credit	Date	Mag	Filter	Comments
LOTOSS image	2002/04/13.3	17.0	C	Discovery
Ella Sanders image	2002/04/15.525		C
Pedro Re' image	2002/04/15.926		C
Fred Ewalt image	2002/04/16.101	17.4	C
R. Poncy image	2002/04/16.899	16.9:	CR
Ella Sanders image	2002/04/17.581		C
S. Massaro image	2002/04/20.830		C
Pedro Re' image	2002/05/15.975		C

Light curves and Spectra:
• CfA spectrum taken April 15, 2002, showing a subluminous type Ia near max
• SNWeb Measurements and light curve.
• VSNET Light curve (requires JAVA).

Other VSNet data on this SN (which will be copied here until VSNET gets it archive working again):
• [vsnet-campaign-sn 410] SN observation from IAUC 7877

  The host galaxy of SN 2002cf is NGC 4786, a elliptical galaxy with some pecuriality (E+ pec). The SN is located at R.A. = 12h54m31s.30, Decl. = -06o51'24".8 (2000.0), which is about 16" west and 9" north of the nucleus of NGC 4786. There is a foreground star (mag about 14-5) about 40" SSW of the nucleus of the host.

  Such elliptical galaxies only produce SN Ia. The expected maximum for typical SN Ia is mag about 15.7. Sometimes intrinsically subluminous SN Ia is observed in the ellipticals.

• [vsnet-campaign-sn 412] SN Ia 2002cf

  The CfA team took a spectrum on Apr. 15.29, which revealed that it is of probably subluminous type Ia some 3 days before maximum. The spectrum can be seen at their Webpage:

  http://cfa-www.harvard.edu/supernova/spectra/sn2002cf-20020415.flm.gif

  Sincerely Yours,
  Hitoshi Yamaoka, Kyushu Univ., Japan
  yamaoka@rc.kyushu-u.ac.jp