Electronic Telegram No. 244
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2005eu, 2005ev, 2005ew
     The "Nearby Supernova Factory" group (G. Aldering, S. Bailey, D.
Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo,
R. C. Thomas, L. Wang, and B. A. Weaver, Lawrence Berkeley National
Laboratory; P. Antilogus, S. Gilles, R. Pain, and R. Pereira,
Laboratoire de Physique Nucleaire et de Haute Energies de Paris; N.
Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, and G. Smadja,
Institut de Physique Nucleaire de Lyon; C. Bonnaud and E. Pecontal,
Centre de Recherche Astronomique de Lyon; R. Kessler, Kavli Institute
for Cosmological Physics, Chicago; and C. Baltay, D. Rabinowitz, and
A. Bauer, Yale University) reports the discovery of two new type-Ia
supernovae discovered in unfiltered CCD images obtained with the
QUEST II camera on the Palomar Oschin 1.2-m telescope as a part of
the Jet Propulsion Laboratory's Near-Earth Asteroid Tracking component
of the Palomar-QUEST survey.  Both 2005ev and 2005ew were confirmed
photometrically with the Lick 1-m Nickel reflector on Oct. 6.4 UT.  SN
2005ev (at mag 16.0, calibrated to band R, when discovered on Oct. 3.4)
in UGC 1990 is located at R.A. = 2h31m04s.93, Decl. = +27o42'06".5
(equinox 2000.0).  A spectrum (range 320-1000 nm), obtained on Oct.
6.6 with the Supernova Integral Field Spectrograph (SNIFS) on the
University of Hawaii 2.2-m telescope, 2005ev this to be a type-Ia
supernova at one month past maximum light, similar to the spectra of
SN 1999aa (Garavini et al. 2004, A.J. 128, 387) and SN 1996X (Salvo et
al. 2001, MNRAS 321, 254) at this phase, corrected to the rest frame
of UGC 1990 (whose redshift is z = 0.0154, from the catalogue by de
Vaucouleurs et al. 1991 via NED).
     SN 2005ew, found at mag 15.1 (calibrated to R) in an image
obtained on Oct. 4.5, is located at R.A. = 3h39m23s.74, Decl. =
+35o02'49".0.  A spectrum, obtained as above with SNIFS on Oct. 6.6,
shows it to be a type-Ia supernova at two weeks past maximum light,
similar to the spectrum of SN 1999ee (Hamuy et al. 2002, A.J. 124,
417) at this phase.  Comparison of the spectrum of SN 1999ee to that
of SN 2005ew suggests a redshift of z = 0.003 for the new object.
     A preliminary spectrum of SN 2005eu (cf. IAUC 8611), obtained as
above with SNIFS on Oct. 6.5, exhibits weak Si II 610.0-nm absorption,
the Ca II infrared triplet, and S II "W".  SM 2005eu appears to be
a type-Ia supernova approximately one week prior to maximum light.
Host H-alpha, [N II], and [S II] emission features indicate a redshift
of z = 0.0349.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2005 CBAT
2005 October 6                   (CBET 244)               Daniel W. E. Green