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IAUC 5635: N Sgr 1992 No. 3; N Cyg 1992

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                                                  Circular No. 5635
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)


NOVA SAGITTARII 1992 No. 3
   G. S. Stringfellow and M. D. Gregg, Mount Stromlo and Siding
Spring Observatories, communicate:  "We confirm this object to be a
nova.  Low-resolution spectra (range 490-940 nm) were obtained with
the Boller & Chivens spectrograph on the 1.9-m telescope at Mt.
Stromlo on Oct. 14.4 UT.  Inspection of the raw spectra reveals
strong H-alpha and O I (777.4-nm blend) emission lines.  The H-
alpha profile is quite asymmetric, having a sharp blue edge with no
P-Cyg absorption and an extended red wing.  The FWHM and FWZI of
the H-alpha line yield 1200 and 3850 km/s, respectively.  Moderate
emission lines of O I (788.6, 823.5, 844.6 nm) and Na I (589.2 nm)
all exhibit strong P-Cyg absorption (except for the weak O I 788.6-
nm line), as does the O I 777.4-nm blend.  Weak to moderate emission
lines of Fe II multiplets (42, 49, 74, and 73) are present,
indicating that this nova is a member of the 'Fe II' class.  The
nova appeared somewhat brighter on the TV monitor than was reported
24 hr earlier (IAUC 5634) and could be still rising or near maximum."
     R. H. McNaught, Anglo-Australian Observatory, reports his
measurement from CCD frames taken Oct. 13 at the 1.0-m Siding Spring
telescope:  R.A. = 18h20m39s.43, Decl. = -23 01'05".5 (equinox 1950.0).
     Visual and photovisual magnitude estimates:  Oct. 14.41 UT,
8.5 (P. Camilleri, Cobram, Victoria, Australia; T-Max 400 film);
14.71, 8.3 (D. Overbeek, Edenvale, R.S.A.); 14.77, 8.0 (H. Mikuz,
Ljubljana, Slovenia).


NOVA CYGNI 1992
     C. E. Woodward, University of Wyoming; and R. D. Gehrz and G.
F. Lawrence, University of Minnesota, report the following infrared
magnitudes, obtained with the 2.3-m Wyoming Infrared Observatory
telescope (+ bolometer detector) on Oct. 10.21 UT:  J = 8.82 +/-
0.10, H = 8.87 +/- 0.08, K = 8.04 +/- 0.12, L = 6.72 +/- 0.05, M =
5.92 +/- 0.05, N = 4.15 +/- 0.09, [7.8 microns] = 2.70 +/- 0.10,
[8.7 microns] = 4.95 +/- 0.10, [9.8 microns] = 5.30 +/- 0.36 [10.3
microns] = 4.89 +/- 0.34, [11.6 microns] = 4.61 +/- 0.41, [12.5
microns] = 3.48 +/- 0.17.  Both the 12.5- and 7.8-micron magnitudes
are well in excess of the continuum, suggesting that enhanced line
emission from neon (IAUC 5497) is present.  Further spectroscopic
observations are encouraged.


1992 October 15                (5635)            Daniel W. E. Green

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