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Supernova 2005dk in IC 4882



IC 4882 in Telescopium
Dist. ?? million l.y. (?)


Supernova Mag 17.8CR

Date : 21.53 Aug 2005

Exposure time : 60 sec.
0.35m f/11 AP-6 CCD






Supernova Mag 16.6CR

Date : 22.62 Aug 2005

Exposure time : 6x60 sec.
0.35m f/11 AP-6 CCD









Supernova Mag 16.4CR

Date : 25.498 Aug 2005

Exposure time : 10x60 sec.
0.35m f/11 AP-6 CCD




Photometry reference image.

                         Circular No. 8586

Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
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SUPERNOVA 2005dk IN IC 4882
     P. Luckas, Perth, W. Australia; O. Trondal, Oslo, Norway; and
M. Schwartz, Patagonia, AZ, report the discovery of an apparent
supernova on unfiltered CCD frames taken with the 0.35-m Tenagra
telescope at Perth; available approximate magnitudes for 2005dk:
July 10.61 UT, [18.5; Aug. 21.53, 17.8; 22.62, 16.6.  SN 2005dk is
located at R.A. = 19h40m23s.71, Decl. = -55o12'05".1 (equinox
2000.0), which is 3".4 east and 16".2 south of IC 4882.


                      (C) Copyright 2005 CBAT
2005 August 22                 (8586)            Daniel W. E. Green


Our report :
 
SUPERNOVA 2005XX IN IC 4882
      P. Luckas, Perth, W. Australia; O. Trondal, Oslo, Norway; and
    M. Schwartz, Patagonia, AZ, report the discovery of an apparent
    supernova (mag 17.8) on an unfiltered CCD frame taken with a
    0.35-m Tenagra telescope at Perth on August 21.53 and 22.62 UT ( mag
   16.6 ) in the course of the Tenagra Observatory Supernova Search.  SN 2005XX is
    located at R.A. = 19h40m23s.71, Decl. = -55o12'05".1 (equinox
    2000.0), which is 3".4 east and 16".2 south of IC 4882 (the galaxy
    center having position end figures 23s.31, 11' 48".9).  Nothing was
    visible at the position of 2005XX on an image taken by Luckas on
    July 10.61 (limiting magnitude about 18.5).



Type determination for SN 2005dk


                Electronic Telegram No. 245

 SUPERNOVAE 2005dk, 2005dn, 2005dy, 2005eb, 2005el, 2005eu, 2005ev
 N. Morrell, G. Folatelli and M. Hamuy, on behalf of the Carnegie
 Supernova Project, report spectroscopic observations (range 380-930
 nm) of SN 2005dk (cf. IAUC 8586), SN 2005dn (cf. IAUC 8589), and SN
 2005el (cf. IAUC 8604) obtained on Sept. 26.00, 26.05, and 26.32 UT,
 respectively, with the du Pont 2.5-m telescope (+ WFCCD spectrograph)
 at the Las Campanas Observatory.  SN 2005dk is a type-II supernova
 about one month after explosion.  Strong P-Cyg profiles of Balmer
 lines are present.  Spectral lines detected in a spectrum of the host
 galaxy, IC 4882, were used to derive a redshift of 0.01574.  Using this
 redshift value, an expansion velocity of about 7000 km/s was measured
 from the absorption minimum of H_beta. 

                         (C) Copyright 2005 CBAT

 2005 October 6                   (CBET 245)               Daniel W. E. Green




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