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IAUC 7914: 2002de; C/2002 C1; V838 Mon

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                                                  Circular No. 7914
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2002de IN NGC 6104
     M. Papenkova and W. D. Li, University of California at
Berkeley, report the LOTOSS (cf. IAUC 7906) discovery of an
apparent supernova (mag about 16.0) on unfiltered CCD images taken
with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on June
1.4 and 2.4 UT.  SN 2002de is located at R.A. = 16h16m30s.38, Decl.
= +35o42'30".2 (equinox 2000.0), which is 4".0 west and 1".0 north
of the nucleus of NGC 6104.  KAIT images taken on May 13.4
(limiting mag about 19.0) and 23.4 (limiting mag about 18.0) showed
nothing at this position.

     G. Cremonese, Istituto Nazionale di Astrofisica (INAF) and
Osservatorio Astronomico, Padova; A. Boattini, M. T. Capria, M. C.
De Sanctis, and G. D'Abramo, Istituto di Astrofisica Spaziale e
Fisica Cosmica, CNR, Rome; and A. Buzzoni, INAF and Telescopio
Nazionale Galileo (TNG), report observing the sodium distribution
in the coma of comet C/2002 C1 on Apr. 20.17 UT, using the 3.5-m
TNG reflector (+ high-resolution spectrograph SARG; resolving power
43000; spatial coverage 26") with a narrow-band filter to isolate
the sodium-D lines.  Two long-slit spectra (one parallel and the
other perpendicular to the sun-comet vector) show cometary sodium
emissions clearly visible due to the comet's geocentric velocity of
-8.3 km/s.  In the first spectrum, the sodium emissions are clearly
asymmetric with respect to the slit center, corresponding to the
nuclear region, extending to the edge of the slit in the tail
direction (about 4000 km).  Even in the second spectrum, a slight
asymmetry is visible in the sodium emissions with stronger
intensity toward the southwest, suggesting the presence of a sodium
jet that is most likely related to a dust feature.

     D. P. K. Banerjee and N. M. Ashok, Physical Research
Laboratory (PRL), Ahmedabad, report that near-infrared spectroscopy
of V838 Mon at 1.08-2.35 microns, obtained with the Mt. Abu 1.2-m
telescope (+ PRL Near-Infrared Imaging Spectrometer + HgCdTe
NICMOS3) on May 2 and 14, show several special and unusual emission
lines seen in the K band, which match well (in wavelength and
strength) the expected lines from TiI at 2.2639, 2.245, 2.2280,
2.2239, 2.2011, 2.19034, and 2.1789 microns.  The Na I doublet at
2.2056 and 2.2084 microns is also seen in emission.  The Ti I lines
were are also found in data from Apr. 9, but they are strongest on
May 2.

                      (C) Copyright 2002 CBAT
2002 June 2                    (7914)            Daniel W. E. Green

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