[IAUC] CBET 1135: 20071114 : SUPERNOVAE 2007pn-2007qb

Mie Nov 14 00:30:21 ART 2007

                                                  Electronic Telegram No. 1135
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2007pn-2007qb
     Further to CBETs 611 and 1128, B. Bassett, South African Astronomical
Observatory and University of Cape Town (UCT); A. Becker, University of
Washington (UW); D. Bizyaev and H. Brewington, Apache Point Observatory (APO);
C. Choi, Seoul National University (SNU); D. Cinabro, Wayne State University
(WSU); C. D'Andrea, University of Pennsylvania (Penn); J. Dembicky, APO; D. L.
DePoy, Ohio State University (OSU); B. Dilday, University of Chicago (UC);
M. Doi, University of Tokyo (UoT); J. Eastman, OSU; J. Frieman, Fermilab and
UC; P. Garnavich, University of Notre Dame; A. Goobar, Stockholm University;
C. Hogan, UW; J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha,
Rutgers University; R. Kessler, UC; B. Ketzeback, APO; K. Konishi, UoT; J.
Krzesinski, APO; H. Lampeitl, University of Portsmouth (UP); G. Leloudas,
Dark Cosmology Centre (DARK), University of Copenhagen; D. Long, O.
Malanushenko, and V. Malanushenko, APO; J. Marriner, Fermilab; R. McMillan,
APO; G. Miknaitis, Fermilab; T. Morokuma, National Astronomical Observatory
of Japan; J. Mosher, Penn; R. Nichol, UP; D. Oravetz and K. Pan, APO; L.
Ostman, Stockholm University; J. L. Prieto, OSU; M. Richmond, Rochester
Institute of Technology; A. Riess, Space Telescope Science Institute; R.
Romani, Stanford University (SU); M. Sako, Penn; D. Schneider, Pennsylvania
State University; A. Simmons, APO; M. Smith, UP; S. Snedden, APO; J.
Sollerman and M. Stritzinger, DARK; N. Takanashi and K. Tokita, UoT; M. F.
Taylor, WSU; K. van der Heyden, UCT; S. Watters, APO; N. Yasuda, UoT; C.
Wheeler, University of Texas; and C. Zheng, SU, on behalf of the Sloan
Digital Sky Survey II collaboration, report the discovery of fifteen
supernovae on g, r, and i images taken with the SDSS 2.5-m telescope at APO
by the SDSS observing team.  J. Marriner, D. McGinnis (Fermilab), G.
Miknaitis, A. Becker, J. Frieman, J. Holtzman, and A. Riess report
confirming spectroscopy of 2007pt, 2007pu, 2007qa, and 2007qb that was
obtained at the ARC 3.5-m telescope on Nov. 9 and 10 UT.  R. Romani, C.
Zheng, M. Sako, C. Wheeler, D. Schneider, and R. Bender, together with U.
Hopp (University of Munich) and W. Kollatschny (University of Goettingen),
report confirming spectroscopy that was obtained at the Hobby-Eberly
Telescope on Nov. 8, 9, and 10 for 2007pn, 2007po, 2007pp, 2007pq, 2007pr,
2007ps, 2007pv, 2007pw, and 2007py.  L. Watson (OSU) and J. Prieto report
confirming spectroscopy of 2007px and 2007pz that was obtained at the
Hiltner 2.4-m telescope at MDM Observatory on the night of Nov. 9.  The
discovery magnitudes tabulated below are all g magnitudes; spectroscopic
redshifts are given in the column labelled z.  Peak dates (all 2007) are
approximate estimates either from fits to the early light curves or from the
spectra, with a typical uncertainty of plus-or-minus several days; in cases
where such estimates are either uncertain or very discrepant, they are not
reported.  Types marked with a question mark (?) imply that the type
identification based on the spectrum is uncertain.

SN       Discov.       R.A. (2000.0) Decl.     Mag.    z    Estimated   Type
         Date UT                                            Peak Date
2007pn   Oct. 12     2 16 33.90  - 0 43 20.5   22.5   0.31   Oct. 20    Ia?
2007po   Oct. 13     3 35 32.23  + 0 42 12.1   22.1   0.29   Oct. 17    Ia
2007pp   Oct. 15     3 11 01.16  + 0 21 24.3   22.2   0.26   Oct. 20    Ia
2007pq   Oct. 15    22 37 13.94  + 0 44 11.0   22.1   0.19   Oct. 30    Ia
2007pr   Oct. 20    23 06 13.03  + 0 19 44.3   22.9   0.33   Oct. 27    Ia
2007ps   Oct. 21     2 19 13.53  - 0 23 05.4   21.8   0.25   Oct. 28    Ia
2007pt   Oct. 29     2 07 38.51  - 0 19 26.4   20.5   0.18   Oct. 31    Ia
2007pu   Oct. 29    22 45 58.15  - 0 38 55.4   21.6   0.09   Nov. 16    Ia
2007pv   Oct. 30    21 59 45.15  + 1 07 37.0   21.5   0.26   Nov.  6    Ia
2007pw   Oct. 30    23 37 34.65  + 0 14 53.2   21.6   0.25   Nov.  2    Ia
2007px   Nov.  2     0 22 44.01  - 0 28 44.4   23.1   0.11   Nov. 14    Ia
2007py   Nov.  4     3 29 31.60  + 0 30 56.0   22.4   0.21   Nov. 11    Ia
2007pz   Nov.  4     3 30 25.18  + 1 00 33.9   20.9   0.13   Nov. 15    Ia
2007qa   Nov.  5     1 52 33.92  + 1 14 38.7   22.5   0.11   Nov. 15    Ia
2007qb   Nov.  8     0 59 18.73  - 0 56 49.4   20.2   0.08   Nov. 19    II


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2007 CBAT
2007 November 14                 (CBET 1135)              Daniel W. E. Green