[IAUC] CBET 990: 20070701 : SUPERNOVAE 2007cw-2007eq
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Electronic Telegram No. 990
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html
SUPERNOVAE 2007cw-2007eq
Three reports sent anonymously to the Central Bureau by the "Nearby
Supernova Factory" collaboration (P. Antilogus, J. Li, R. Pain, R. Pereira,
and C. Wu, Laboratoire de Physique Nucleaire et de Haute Energies de Paris;
C. Buton, Y. Copin, E. Gangler, and G. Smadja, Institut de Physique
Nucleaire de Lyon; G. Aldering, C. Aragon, S. Bailey, S. Bongard, M.
Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas, and
B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley; E. Pecontal
and G. Rigaudier, Centre de Recherche Astronomique de Lyon; R. Kessler,
Kavli Institute for Cosmological Physics, Chicago; and C. Baltay, A. Bauer,
N. Ellman, D. Herrera, D. Rabinowitz, R. Scalzo, Yale University),
including one responding to questions from the Central Bureau, contain the
information provided herein regarding the discovery of 51 new supernovae in
images obtained from Mar. 26 through June 26 UT with the QUEST-II camera on
the Palomar Oschin 1.2-m Schmidt telescope, operated by the Palomar-QUEST
Consortium. R-band discovery magnitudes and positions were derived from
comparison with the USNO-A2.0 catalogue for discovery dates prior to June 1
and with the USNO-B1.0 catalogue after June 1. A subsequent spectrum of
each target (range 320-1000 nm), obtained with the SuperNova Integral Field
Spectrograph on the University of Hawaii 2.2-m telescope, was used for the
classifications and redshifts (z) tabulated below.
SN 2007 UT R.A. (2000.0) Decl. Mag. z Type
2007cw Mar. 26.4 14 38 07.48 - 8 35 55.7 19.1 0.10 Ia
2007cx Mar. 31.2 10 19 09.49 +36 50 54.8 18.2 0.06 Ia
2007cy Apr. 2.2 9 11 30.08 + 8 27 28.2 19.0 0.05 Ia
2007cz Apr. 3.2 9 55 36.78 + 7 18 15.0 18.8 0.07 Ia
2007da Apr. 4.3 11 05 05.66 + 8 38 58.5 19.7 0.10 Ia
2007db Apr. 4.3 11 17 10.30 - 6 11 48.6 18.3 0.06 Ic
2007dc Apr. 4.3 11 48 51.16 +10 03 46.8 19.0 0.08 Ia
2007dd Apr. 4.4 13 52 49.98 +20 29 49.5 18.2 0.06 Ia
2007de Apr. 4.4 14 07 39.89 +19 28 04.8 19.7 0.15 Ia
2007df Apr. 8.3 12 29 43.73 -14 43 11.3 19.2 0.10 Ia
2007dg Apr. 18.2 10 40 15.34 +18 16 41.0 19.6 0.10 Ia
2007dh Apr. 18.2 11 52 36.70 +12 20 14.4 18.8 0.09 Ia
2007di Apr. 18.4 16 14 25.92 + 5 09 21.1 19.7 0.13 Ia
2007dj Apr. 19.2 11 10 19.97 - 1 20 20.0 19.4 0.11 Ia
2007dk Apr. 19.2 12 31 25.43 - 4 29 13.5 17.2 0.03 Ia
2007dl Apr. 22.4 13 56 54.23 +10 50 39.2 17.3 0.04 Ia
2007dm Apr. 22.4 15 02 55.12 + 7 12 05.6 19.6 0.08 Ia
2007dn Apr. 24.5 15 22 45.80 +17 13 20.2 18.9 0.07 Ia
2007do Apr. 27.2 10 36 10.18 +34 32 33.4 18.2 0.05 Ia
2007dp Apr. 27.3 15 18 36.79 + 9 51 17.2 18.5 0.03 II
2007dq Apr. 27.3 15 41 02.87 + 0 14 58.4 19.4 0.05 II
2007dr Apr. 27.4 16 41 56.00 +15 22 59.1 19.9 0.14 Ia
2007ds Apr. 29.3 16 14 04.60 + 8 55 20.0 19.7 0.14 Ia
2007dt Apr. 30.5 20 59 25.70 + 3 39 12.5 19.1 0.10 Ia
2007du May 4.4 13 21 54.91 +23 02 26.8 18.8 0.10 Ia
2007dv May 4.4 14 00 51.02 +22 57 28.4 19.0 0.10 Ia
2007dw May 6.3 14 36 38.68 +14 40 14.2 19.0 0.05 II
2007dx May 9.2 12 51 12.75 - 9 01 45.2 19.6 0.12 Ia
2007dy May 13.5 21 22 03.43 + 5 09 06.1 19.6 0.04 Ib
2007dz May 13.5 21 45 16.26 +11 02 48.6 17.9 0.03 Ia
2007ea May 17.3 15 53 46.27 -27 02 15.5 18.2 0.04 Ic
2007eb May 17.6 22 42 48.98 +24 02 47.2 18.2 0.04 Ib/c
2007ec May 24.5 21 49 32.58 +19 01 44.4 20.3 0.16 Ia
2007ed May 26.3 15 34 52.38 + 7 00 53.6 19.7 0.07 II
2007ee May 28.3 14 47 47.34 +16 49 53.1 19.4 0.03 Ia
2007ef May 28.3 17 12 42.39 + 6 12 07.2 19.0 0.08 II
2007eg May 30.2 13 09 50.34 +20 44 42.0 19.3 0.10 Ia
2007eh May 30.2 14 02 16.90 +13 06 02.9 18.8 0.01 II
2007ei May 31.2 14 10 11.29 + 8 18 39.8 20.1 0.10 Ia
2007ej May 31.4 22 14 52.16 + 6 43 53.7 19.0 0.07 Ia
2007ek June 4.3 15 23 04.86 + 8 46 55.7 18.7 0.08 Ia
2007el June 4.4 23 43 55.11 +27 06 24.3 17.9 0.03 II
2007em June 5.3 15 59 41.93 + 2 17 04.2 18.2 0.03 II
2007en June 5.3 16 18 43.84 + 3 02 50.1 19.6 0.12 Ia
2007eo June 5.4 17 28 46.33 +22 10 40.3 19.0 0.10 Ia
2007ep June 8.2 16 54 38.51 +16 02 59.7 19.4 0.12 Ia
2007eq June 13.4 23 48 05.93 +28 14 20.2 18.9 0.03 Ib/c
2007er June 17.2 16 10 41.68 +15 17 38.5 20.1 0.07 II
2007es June 26.2 14 27 46.37 + 6 35 36.2 18.7 0.03 II
2007et June 26.4 1 09 24.24 +19 55 51.4 19.2 0.04 II
2007eu June 26.5 0 36 19.65 + 6 03 40.4 19.8 0.04 II
Dates of many of the spectroscopy observations for specific supernovae are
given below, some with notes about the phase at that time: 2007cw, Apr.
2.5 UT, around maximum; 2007cx, Apr. 3.4, 1 week past maximum; 2007cy,
Apr. 10.2, few days past maximum; 2007cz, Apr. 10.3, around maximum;
2007da, Apr. 10.4, around maximum; 2007db, Apr. 8.4; 2007dc, Apr. 8.5,
few days past maximum; 2007dd, Apr. 8.6, few days past maximum;
2007de, Apr. 10.6, few days before maximum; 2007df, Apr. 10.5, around
maximum; 2007dg, Apr. 20.3, around maximum; 2007dh, Apr. 20.4, around
maximum; 2007di, Apr. 20.5, 1 week before maximum; 2007dj, Apr. 23.4,
few days before maximum; 2007dk, Apr. 23.5, few days past maximum;
2007dl, Apr. 23.5, 1 week past maximum; 2007dm, Apr. 23.6, 1 week before
maximum; 2007dn, Apr. 25.5, 2-3 weeks past maximum; 2007do, Apr. 28.3,
1 week past maximum; 2007dp, Apr. 28.5; 2007dr, Apr. 28.6, around maximum;
2007ds, Apr. 30.6, around maximum; 2007dt, May 3.6, around maximum;
2007du, May 5.4, 1-2 weeks before maximum; 2007dv, May 5.5, 1-2 weeks
before maximum; 2007dx, May 10.4, 1 week before maximum; 2007dz, May 18.6,
3 weeks past maximum; 2007eb, May 20.6, high-velocity type-Ib/c supernova
similar to SN 1998bw just before peak brightness (Patat et al. 2001, Ap.J.
555, 900); 2007ec, May 25.5, around maximum; 2007ee, May 30.4, around
maximum; 2007eg, June 1.3, 1 week before maximum; 2007eh, June 1.3;
2007ei, June 2.3, few days past maximum; 2007ej, June 1.5, 3 weeks past
maximum; 2007ek, June 12.4, 1 week past maximum; 2007el, June 10.5;
2007em, June 12.4; 2007en, June 12.4, around maximum; 2007eo, June 10.5,
few days before maximum; 2007ep, June 10.5, around maximum; 2007eq, June
19.5; 2007er, June 19.3; 2007es, June 27.3; 2007et, June 27.6; 2007eu,
June 27.5.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2007 CBAT
2007 July 1 (CBET 990) Daniel W. E. Green
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