[IAUC] CBET 1104: 20071018 : SUPERNOVAE 2007md AND 2007mr-2007nl
IAUC mailing list
quai en cfa.harvard.edu
Jue Oct 18 19:40:21 ART 2007
Electronic Telegram No. 1104
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 2007md AND 2007mr-2007nl
Further to CBETs 611 and 1102, 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, 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 twenty-one
supernovae on g, r, and i images taken with the SDSS 2.5-m telescope at APO
by the SDSS observing team. A. V. Filippenko, J. M. Silverman, R. J. Foley,
and M. Modjaz, University of California, Berkeley, have reported confirming
spectroscopy of 2007my, obtained on the Keck 10-m telescope on Oct. 16 UT.
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 confirming spectroscopy that was obtained at the
European Southern Observatory's New Technology Telescope on Oct. 16 and 17
by M. Smith and G. Leloudas for 2007ms, 2007mr, 2007mz, 2007nl, 2007nb,
2007nc, 2007mv, 2007ne, 2007nf, 2007ni, 2007nj, and 2007nk. R. Romani, C.
Zheng, M. Sako, C. Wheeler, and D. Schneider, together with R. Bender and
U. Hopp, University of Munich; and W. Kollatschny, University of Goettingen,
have reported confirming spectroscopy obtained at the Hobby-Eberly Telescope
on Oct. 15 and 17 for 2007mt, 2007mw, 2007mu, 2007nd, 2007ng, 2007nh,
2007mx, and 2007na. 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 question marks (?)
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
2007mr Sep. 5 20 08 18.00 - 0 39 44.7 21.3 0.08 Sep. 1 II
2007ms Sep. 13 20 32 18.34 - 1 00 53.1 20.7 0.04 Sep. 17 II-pec
2007mt Sep. 19 1 45 56.59 - 0 13 03.5 23.1 0.41 Oct. 1 Ia?
2007mu Sep. 22 0 12 18.56 - 0 04 38.3 22.0 0.40 Sep. 21 Ia
2007mv Sep. 22 0 35 37.37 + 0 22 12.1 22.3 0.26 Oct. 5 Ia
2007mw Oct. 3 23 03 02.76 + 0 50 57.0 22.4 0.33 Oct. 3 Ia
2007mx Oct. 6 21 14 10.87 - 0 17 46.5 22.7 0.41 Oct. 8 Ia
2007my Oct. 6 21 55 32.20 - 0 22 19.2 21.8 0.29 Oct. 12 Ia
2007mz Oct. 6 22 07 51.20 - 1 04 11.8 22.2 0.23 Oct. 16 Ia
2007na Oct. 6 22 13 32.79 + 0 52 49.8 22.8 0.47 Oct. 11 Ia
2007nb Oct. 6 23 25 30.06 + 0 25 23.1 22.1 0.28 Oct. 18 Ia
2007nc Oct. 8 0 01 09.30 + 1 04 06.5 22.5 0.09 Oct. 20 Ib?
2007nd Oct. 8 0 40 18.81 - 1 02 14.5 21.8 0.27 Oct. 7 Ia
2007ne Oct. 8 0 54 02.20 + 1 04 08.4 22.2 0.21 Oct. 25 Ia
2007nf Oct. 8 1 03 26.47 + 0 19 53.0 22.8 0.24 Oct. 20 Ia
2007ng Oct. 8 2 25 38.10 + 0 42 34.5 23.2 0.40 Oct. 15 Ia
2007nh Oct. 8 2 50 27.69 - 0 33 04.2 21.8 0.27 Oct. 16 Ia
2007ni Oct. 9 2 05 50.39 - 0 19 54.7 21.8 0.21 Oct. 23 Ia
2007nj Oct. 11 2 52 27.45 + 0 15 06.6 21.9 0.15 Oct. 18 Ia
2007nk Oct. 13 3 20 56.52 + 1 03 29.3 21.5 0.22 Oct. 19 Ia
2007nl Oct. 13 23 13 44.92 - 0 04 03.5 21.8 0.16 Oct. 11 II
Also, J. Marriner and D. McGinnis (Fermilab), G. Miknaitis, A. Becker,
J. Frieman, J. Holtzman, and A. Riess report that a spectrum taken with the
ARC 3.5-m telescope on Oct. 16 shows that 2007md, originally reported on
CBET 1102 as a type-Ic supernova, is in fact a type-II supernova.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2007 CBAT
2007 October 18 (CBET 1104) Daniel W. E. Green
Más información sobre la lista de distribución Iauc