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IAUC 8605: 2005en, 2005eo; 171P

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                                                  Circular No. 8605
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)

SUPERNOVAE 2005en AND 2005eo IN UGC 4132
     Two apparent supernova in UGC 4132 have been discovered on
unfiltered CCD images:  both objects independently by T. Puckett
and M. Peoples (cf. IAUC 8601) and by the Lick Observatory
Supernova Search program (KAIT, via R. R. Prasad and W. Li, with
2005eo first spotted by E. Lee on the Sept. 29.54 image; cf. IAUC
8604).  SN 2005eo was also independently found by P. Berlind while
undertaking spectroscopy for 2005en on Sept. 29 at Mt. Hopkins.
The tabulated data below are from Puckett.

SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005en  Sep. 27.19   7 59 12.61  +32 55 00.5  17.5   5".8 W, 6".9 N
2005eo  Sep. 27.19   7 59 13.94  +32 55 19.7  18.3   11".0 E, 26".1 N

Li provides position end figures 12s.64, 54'59".4 for SN 2005en,
and 13s.98, 18".4 for 2005eo.  Approximate magnitudes for 2005en:
2005 Mar. 2 UT, [20.0 (Puckett); 25, [20.0 (Puckett); Apr. 4.15,
[19.5 (Li); Sept. 28.51, 17.0 (Li).  Approximate magnitudes for
2005eo:  Mar. 2, [20.0 (Puckett); 25, [20.0 (Puckett); Apr. 4.15,
[19.5 (Li); Sept. 28.51, 17.5 (Li); 29.17, 18.0 (S. Faworski,
Elizabeth, IL, via Puckett); 29.54, 17.5 (Li).
     M. Modjaz, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics; and T. Matheson, National Optical
Astronomy Observatory, report that a spectrogram (range 350-740 nm)
of SN 2005en, obtained by Berlind on Sept. 29.50 UT with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), reveals it to be a
type-II supernova, with H_alpha and H_beta P-Cgy profiles and other
elements in absorption.  Adopting the NED recession velocity of
5227 km/s (from Falco et al. 1999, PASP 111, 438 ) for the host
galaxy, the expansion velocity derived from the minimum of the
H_beta line is 7000 km/s.  A spectrogram of 2005eo, taken by
Berlind on Sept. 29.55, reveals it to be a type-Ic supernova around
maximum; the spectrum is similar to spectra of SN 1994I (Filippenko
et al. 1995, Ap.J. 450, L11) taken around maximum.

     Permanent numberings have been given recently (cf. MPC 54797)
to two additional comets:  171P/1998 W1 = 2005 R3 (cf. IAUC 8599)
and 172P/2001 CB_40 = 2002 BV (cf. IAUC 7896).

                      (C) Copyright 2005 CBAT
2005 September 29              (8605)            Daniel W. E. Green

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