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IAUC 7258: SNe; V1493 Aql

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                                                  Circular No. 7258
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVAE
     P. Astier, Laboratoire de Physique Nucleaire et des Hautes
Energies, CNRS/IN2P3, and Universites Paris VI et VII, on behalf of
the European Supernova Cosmology Consortium (cf. IAUC 7182, plus A.
Goobar, University of Stockholm), and in collaboration with the
Supernova Cosmology Project (cf. IAUC 7128), report ten supernovae
found with the 2.5-m Isaac Newton Telescope (INT) in their
Intermediate Redshift Supernova Search:

SN      1999 UT       R.A. (2000.0) Decl.       g'     z    Type
1999dr  Sept. 2.99  23 00 17.56  - 0 05 12.5   22.1  0.182   Ia
1999ds  Sept. 7.06  23 53 51.63  + 0 09 22.9   22.4  0.350   II?
1999dt  Sept. 4.05   0 45 42.29  + 0 03 22.2   23.5  0.439   Ia
1999du  Sept. 8.16   1 07 05.94  - 0 07 53.8   22.8  0.263   Ia
1999dv  Sept. 9.10   1 08 58.96  + 0 00 24.8   21.8  0.187   Ia
1999dw  Sept. 7.15   1 22 52.80  - 0 16 20.8   24.1  0.447   Ia?
1999dx  Sept. 8.20   1 33 59.45  + 0 04 15.3   22.2  0.270   Ia
1999dy  Sept. 8.21   1 35 49.53  + 0 08 38.3   21.7  0.206   Ia
1999dz  Sept. 8.21   1 37 03.24  + 0 01 57.9   23.4  0.488   Ia
1999ea  Sept. 9.20   1 47 26.09  - 0 02 07.2   23.3  0.399   Ia

Most of the supernovae were discovered near maximum light and
reobserved 1-2 days after discovery on the INT.  Confirmation
spectroscopy was obtained on the 4.2-m William Herschel Telescope
during the nights of Sept. 12-14.  The supernovae are all within
1".5 of the host galaxies' centers.  Further photometry in g' and
r' is being obtained with various telescopes.  Finding charts are
available from hardin@snova1.in2p3.fr.


V1493 AQUILAE
     D. K. Lynch, R. J. Rudy, and S. Mazuk, The Aerospace
Corporation; and R. C. Puetter, Center for Astrophysics and Space
Science, University of California at San Diego, report 0.8-2.5-
micron spectrophotometry of V1493 Aql = N Aql 1999 using the Shane
3-m telescope at Lick Observatory (+ Aerospace Near Infrared
Imaging Spectrograph) on Aug. 28.27 UT (about 48 days after
outburst).  The spectrum shows very broad lines (FWHM about 4000
km/s), with the strongest being the Lyman-beta fluoresced O I lines
at 0.8446 and 1.1287 microns.  Also present were the O I lines at
1.3164 microns, excited by continuum fluorescence.  The Paschen and
Brackett lines were also strong, as was the He I at 1.0831 microns.
There was no evidence of thermal emission from dust.  Infrared
magnitudes:  J = 8.4, H = 8.2, K = 7.7.

                      (C) Copyright 1999 CBAT
1999 September 20              (7258)            Daniel W. E. Green

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