Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 7220: 1999cq; N IN NGC 6822; V382 Vel; NOVAE IN M31

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 7219  SEARCH Read IAUC 7221

View IAUC 7220 in .dvi or .ps format.
IAUC number

                                                  Circular No. 7220
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 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 1999cq IN UGC 11268
     A. V. Filippenko, University of California at Berkeley,
reports:  "Inspection of an uncalibrated CCD spectrogram (range
330-1000 nm) obtained on July 9 UT with the 3-m Shane reflector at
Lick Observatory confirms that SN 1999cq (cf. IAUC 7209) is a
supernova.  Its type is uncertain, but perhaps Ib or Ic entering
the nebular phase.  The Ca II near-infrared triplet and O I 777-nm
are seen in emission, while Na D exhibits a P-Cyg profile.  H-alpha
is weak, if present.  The object has faded by at least 2 mag since
its discovery two weeks ago."

     Filippenko further reports that a CCD spectrum (obtained as
above) confirms that the new object in NGC 6822 (cf. IAUC 7208,
7211, 7212) is indeed a nova.  Prominent hydrogen Balmer and Fe II
emission lines are visible.

     C. E. Woodward, University of Wyoming; D. H. Wooden, Ames
Research Center, NASA; and R. K. Pina and R. S. Fisher, University
of Florida, Gainesville, write:  "We have discovered a strong [Ne
II] 12.81-micron line in the spectra of V382 Vel obtained on July
5.01 UT at the National Optical Astronomy Observatory's 4-m Blanco
telescope (+ OSCIR) at Cerro Tololo.  Detection of the neon coronal
emission line in the mid-infrared spectra classifies V382 Vel as an
ONeMg nova (cf. Gehrz et al. 1995, A.J. 110, 325).  Also present in
the spectra are H I recombination emission lines (9-7) and (7-6).
The observed line fluxes, relative to H I (7-6) at 8.7 x 10**-19 W
cm**-2, are H I (9-7)/H I (7-6) = 0.5 and [Ne II]/H I (7-6) = 3.4.
The ejecta velocity inferred from the H I (7-6) gaussian FWHM is
3300 km/s, consistent with earlier velocity estimates of Shore et
al. (IAUC 7192).  Continued infrared spectroscopy is urged."

     Corrigendum.  On IAUC 5814 and 5861, the two positions given
actually refer to the nucleus of M31; the offsets from the nucleus
are correct in each case.

                      (C) Copyright 1999 CBAT
1999 July 12                   (7220)            Daniel W. E. Green

Read IAUC 7219  SEARCH Read IAUC 7221

View IAUC 7220 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!