[IAUC] CBET 1733: 20090323 : SUPERNOVAE 2009bm-2009br
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Lun Mar 23 20:49:32 ART 2009
Electronic Telegram No. 1733
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 2009bm-2009br
A. J. Drake, S. G. Djorgovski, R. Williams, A. Mahabal, and M. J. Graham,
California Institute of Technology; E. Y. Hsiao, M. L. Graham, and C. J.
Pritchet, Department of Physics and Astronomy of the University of Victoria;
D. Balam, Dominion Astrophysical Observatory, National Research Council of
Canada; M. Catelan, Pontificia Universidad Catolica; E. C. Beshore, S. M.
Larson, A. Gibbs, A. Boattini and R. Hill, Lunar and Planetary Laboratory,
University of Arizona; and E. Christensen, Gemini Observatory, report the
discovery of several apparent supernovae in unfiltered Catalina Sky Survey
(CSS) images:
SN 2009 UT R.A. (2000.0) Decl. Mag. Offset
2009bm Feb. 13.26 8 36 41.68 + 9 14 05.3 18.1 0".6 W, 1".0 N
2009bn Feb. 27.46 14 12 40.74 +13 09 46.1 18.9 1".5 W, 0".8 S
2009bo Mar. 17.38 12 27 51.75 +26 25 58.6 18.9 2".0 W, 1".3 N
2009bp Mar. 17.50 14 07 49.75 +36 38 37.1 17.6 1".1 E, 1".0 S
2009bq Mar. 19.20 9 17 21.03 - 5 08 39.3 17.4 37".7 E, 0".2 S
2009br Mar. 19.49 15 23 56.14 - 8 19 18.3 18.0 9".2 W, 13".0 S
Follow-up observations were performed with the Palomar 1.5-m reflector (+
Gunn filter set; lower-case bandpass letters in the listing of magnitudes
below), the 1.82-m Plaskett telescope (+ Johnson V), and the CSS (for which
no passband is provided in the listing of magnitudes below). Further
magnitudes for 2009bm: Jan. 18.29 UT, [19.8; Feb. 20.14, g = 17.9, r = 18.1,
i = 17.7; Feb. 21.26, 17.7; Mar. 18.15, 18.5. The apparent host galaxy for
2009bm, SDSS J083641.72+091404.3, has Gunn magnitudes u = 22.4, g = 20.9, r
= 20.5, i = 20.9, z = 20.0. Further unfiltered CSS magnitudes for 2009bn:
Jan. 2.55, [21.1; Jan. 28.52, 19.2; Feb. 5.42, 18.6; Mar. 18.45, 19.0. The
apparent host galaxy for 2009bn, SDSS J141240.84+130945.3, has Gunn magnitudes
u = 21.5, g = 21.0, r = 20.4, i = 20.4, z = 20.4. Further magnitudes for
2009bo: Mar. 3.40, [20.5; Mar. 21.38, V = 18.3. The apparent host galaxy
for 2009bo, SDSS J122751.90+262557.3, has Gunn magnitudes u = 22.6, g = 21.4,
r = 20.8, i = 20.4, z = 20.1. Further unfiltered CSS magnitudes for 2009bp:
Jan. 30.47, [19.0; Feb. 28.43, 17.9. The apparent host galaxy for 2009bp,
SDSS J140749.66+363838.1, has Gunn magnitudes u = 21.0, g = 19.9, r = 19.6,
i = 19.4, z = 19.3. Further magnitudes for 2009bq: Mar. 1.29, [21.3; Mar.
21.14, g = 16.3, r = 16.7, i = 16.9, z = 16.5; Mar. 21.22, V = 16.7. Further
magnitudes for 2009br: 2008 Dec. 30.55, [20.7; 2009 Mar. 21.32, g = 18.6, r
= 18.2, i = 18.4, z = 18.2.
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
(C) Copyright 2009 CBAT
2009 March 23 (CBET 1733) Daniel W. E. Green
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