Central Bureau for Astronomical Telegrams
IAUC 8467: 2005E, 2005F, 2005G, 2005H, 2005I, 2005J
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Circular No. 8467
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)
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Phone 617-495-7440/7244/7444 (for emergency use only)
SUPERNOVAE 2005E, 2005F, 2005G, 2005H, 2005I, 2005J
Three apparent supernova discoveries have been reported from
unfiltered CCD images: SNe 2005H and 2005I by LOSS/KAIT (cf. IAUC
8465, via J. Graham and W. Li) and SN 2005J by O. Trondal and M.
Schwartz (cf. IAUC 8442; Tenagra II 0.81-m telescope).
SN 2005 UT R.A. (2000.0) Decl. Mag. Offset
2005H Jan. 15.17 2 09 38.52 -10 08 43.6 15.9 0".3 E, 1".8 N
2005I Jan. 15.57 14 10 02.86 +17 43 22.4 18.4 21" W, 40" S
2005J Jan. 16.40 11 58 28.54 +10 01 09.2 16.5 13".6 E, 7".4 S
Additional unfiltered CCD magnitudes by the respective discoverers:
SN 2005H in NGC 838, 2004 Dec. 19.16 UT, [19.0. SN 2005I in IC
983, 2004 July 2.21, [19.5. SN 2005J in NGC 4012, 2004 Jan. 21.38,
[19.0; 2005 Jan. 18.42, 16.5. Note that SN 2004aq also appeared in
NGC 4012.
A. Pastorello and S. Taubenberger, Max-Planck-Institut fuer
Astrophysik (MPIA), Garching; F. Patat, European Southern
Observatory; and S. Benetti, A. Harutyunyan, and N. Elias-Rosa,
Osservatorio Astronomico di Padova; on behalf of the European RTN
collaboration (cf. IAUC 7987), report that inspection of a
spectrogram of SN 2005I, taken on Jan. 18.22 UT by M. Alises with
the Calar Alto 2.2-m telescope (+ CAFOS; range 330--880 nm), shows
it to be a type-II supernova, about 3 months after the explosion.
The spectrum is characterized by a red continuum with relatively
strong and narrow P-Cyg lines of H, Ca II, Fe II, Sc II, Ba II, and
Ti II. The expansion velocities, deduced by the minima of the main
features (NED recession velocity of 5443 km/s assumed for the host
galaxy), are 4800 km/s for H_alpha, 3300 km/s for Na I D, and 2500
km/s for the Fe II lines (multiplet 42). The supernova spectrum
does not show clear evidence of interstellar Na lines at the rest
wavelength of the host galaxy, suggesting no significant reddening.
A noisy spectrum of SN 2005H is that of a young type-II supernova.
The spectrum is dominated by a blue continuum with a broad H_alpha
emission flanked by a shallow broad absorption. H_beta, Fe II
501.8- and 516.9-nm, and He I 587.6-nm lines are also present with
well-developed P-Cyg profiles. The expansion velocity deduced from
the H_alpha minimum is about 12000 km/s, while that deduced from
H_beta and He I 587.6-nm is about 10400 km/s (NED recession
velocity of 3851 km/s assumed for NGC 838, a starburst galaxy).
Corrigendum. On IAUC 8465, line 4, *FOR* 2004 UT *READ*
2005 UT
(C) Copyright 2005 CBAT
2005 January 18 (8467) Daniel W. E. Green
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