[IAUC] CBET 1102: 20071016 : SUPERNOVAE 2007lf-2007mp
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Electronic Telegram No. 1102
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 2007lf-2007mp
Further to CBETs 611 and 1098, B. Bassett, South African Astronomical
Observatory; 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 (DCC), 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, DCC; N.
Takanashi and K. Tokita, UoT; M. F. Taylor, WSU; K. van der Heyden, University
of Cape Town; 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 thirty-seven supernovae on g, r, and
i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing
team. L. Watson (OSU), J. Prieto, and C. Zheng have reported on confirming
spectroscopy of 2007lg, 2007li, 2007ll, 2007lt, 2007lv, 2007ly, 2007ma,
2007mc, 2007md, 2007mh, 2007mi, 2007mj, and 2007lx obtained with the
Hiltner 2.4-m telescope on Oct. 10-12 UT. P. Garnavich has reported on
confirming spectroscopy of 2007lj, 2007ln, 2007lo, 2007lp, 2007lz, 2007mb,
2007mg, and 2007mm obtained on the Kitt Peak National Observatory 4-m
telescope on Oct. 10 and 11. A. V. Filippenko, J. M. Silverman, R. J.
Foley, and M. Modjaz, University of California, Berkeley, have reported on
confirming spectroscopy of 2007lu and 2007lw obtained on the Keck 10-m
telescope on Oct. 14. J. Marriner, D. McGinnis (Fermilab), G. Miknaitis, A.
Becker, J. Frieman, J. Holtzman, and A. Riess have reported on confirming
spectroscopy of 2007lk and 2007lq obtained on the ARC 3.5-m telescope on
the nights of Oct. 12 and 14. A. Aragon-Salamanca, University of Nottingham;
M. Bremer, University of Bristol; M. Turatto, University of Padova; A.
Goobar; R. Nichol; J. Sollerman; P. Ruiz-Lapuente, University of Barcelona;
F. Castander, University of Barcelona; A. K. Romer, University of Sussex; C.
Collins, Liverpool John Moores University; and J. Lucey and A. Edge,
University of Durham, have reported on confirming spectroscopy that was
obtained by the European Southern Observatory's New Technology Telescope on
Oct. 14 and 15 by M. Smith and G. Leloudas for 2007lf, 2007lh, 2007lm,
2007lr, 2007ls, 2007me, 2007mf, 2007ml, 2007mk, 2007mn, 2007mo, and 2007mp.
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
2007lf Sep. 3 0 16 45.46 + 1 12 03.2 20.5 0.04 July 20 Ia
2007lg Sep. 22 0 46 03.95 - 0 00 37.4 21.9 0.12 Oct. 7 Ia
2007lh Sep. 22 1 08 52.02 + 1 11 52.4 22.3 0.20 Oct. 5 Ia
2007li Sep. 22 1 13 04.01 - 0 32 24.0 21.4 0.12 Oct. 2 Ia
2007lj Sep. 30 21 28 41.93 - 0 04 02.1 20.6 0.04 Oct. 6 II
2007lk Oct. 3 1 57 50.11 - 0 23 53.2 21.0 0.22 Oct. 7 Ia?
2007ll Oct. 3 1 58 40.13 - 0 14 56.6 20.5 0.08 Oct. 4 II?
2007lm Oct. 3 3 13 40.44 + 0 37 47.9 21.4 0.21 Oct. 3 Ia
2007ln Oct. 3 3 40 43.21 + 1 00 11.0 21.8 0.09 Oct. 10 Ia?
2007lo Oct. 3 22 35 56.06 + 0 36 33.2 22.1 0.14 Oct. 10 Ia
2007lp Oct. 3 22 43 41.01 + 0 25 16.9 22.2 0.15 Oct. 17 Ia
2007lq Oct. 6 0 23 07.87 + 0 59 00.5 21.5 0.23 Oct. 15 Ia?
2007lr Oct. 6 0 49 00.34 - 0 19 26.4 22.1 0.15 Oct. 14 Ia
2007ls Oct. 6 20 28 28.07 + 0 00 22.4 21.7 0.25 Oct. 12 Ia
2007lt Oct. 6 21 53 47.34 + 0 00 54.2 19.9 0.12 Oct. 8 Ia
2007lu Oct. 6 22 01 34.90 - 0 15 24.8 22.3 0.32 Oct. 11 Ia
2007lv Oct. 6 23 24 47.98 + 0 56 40.4 20.5 0.12 Oct. 3 Ia?
2007lw Oct. 6 23 36 48.90 - 0 46 56.1 21.7 0.28 Oct. 9 Ia
2007lx Oct. 8 0 11 39.27 - 0 28 24.1 20.5 0.06 Oct. 10 II?
2007ly Oct. 8 0 22 53.38 + 0 46 33.4 20.1 0.08 Oct. 5 Ia
2007lz Oct. 8 0 31 23.21 + 0 19 08.1 21.0 0.09 Oct. 18 II
2007ma Oct. 8 0 44 53.75 - 0 59 49.3 19.1 0.11 Oct. 13 Ia
2007mb Oct. 8 0 50 11.36 + 0 40 31.5 21.1 0.19 Oct. 8 Ia
2007mc Oct. 8 1 07 25.28 + 1 02 37.5 20.8 0.15 Oct. 18 Ia
2007md Oct. 8 1 21 56.85 - 1 00 47.8 20.7 0.05 Oct. 14 Ic
2007me Oct. 8 1 41 03.75 - 0 26 54.5 21.1 -- Oct. 18 Ia/Ic?
2007mf Oct. 8 1 58 55.14 - 1 01 37.5 21.3 0.20 Oct. 11 Ia
2007mg Oct. 8 3 06 33.83 + 0 47 35.9 21.1 0.16 Oct. 8 Ia
2007mh Oct. 8 3 14 31.77 + 0 16 11.4 19.9 0.13 Oct. 9 Ia
2007mi Oct. 8 3 23 31.52 + 0 39 60.0 19.9 0.13 Oct. 6 Ia
2007mj Oct. 8 3 34 44.44 + 0 21 19.9 20.4 0.12 Oct. 10 Ia
2007mk Oct. 8 23 56 17.33 - 0 30 21.1 22.1 0.18 Oct. 22 Ia
2007ml Oct. 9 0 31 53.46 + 0 08 17.9 21.8 0.20 Oct. 21 Ia
2007mm Oct. 9 1 05 46.67 - 0 45 31.8 21.1 0.07 Oct. 18 Ia
2007mn Oct. 9 2 05 03.96 + 0 10 28.4 21.9 0.08 Oct. 27 Ia
2007mo Oct. 9 22 11 33.85 + 0 45 53.2 21.7 0.24 Oct. 17 Ia
2007mp Oct. 12 21 16 35.63 - 0 46 11.6 21.5 0.06 -- Ia
SN 2007lx in MCG +00-1-36 looks quite well separated from the known BL Lac
core of the galaxy and reasonably separated from a bright knot within the host
galaxy, both of which have SDSS spectra and which look from the SDSS images
like they may show some sign of variability at a lower level than is seen for
2007lx.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2007 CBAT
2007 October 16 (CBET 1102) Daniel W. E. Green
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