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IAUC 3759: SN IN NGC 5485; epsilon Aur; VY Aqr; AM Her

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IAUC number 

                                                  Circular No. 3759
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM     Telephone 617-864-5758


SUPERNOVA IN NGC 5485
     L. Rosino, Asiago Astrophysical Observatory, telexes: "A
spectrogram (dispersion 120 A/mm) obtained on 1982 Dec. 27.1 UT
by S. Ortolani with the grating spectrograph on the 1.82-m telescope
shows that this is a type I supernova in a rather advanced
state of evolution, probably then 20-30 days past maximum.  Broad
emission features typical of type I objects have been observed at
wavelengths 402, 465.5 (outstanding), 484, 491, 496.5, 507, 514.5,
533, 568 and 594 nm.  The absorption feature at 613.5 nm is barely
visible in the tracings."


epsilon AURIGAE
     G. Henson, J. Kemp and D. Kraus, Physics Department, University
of Oregon at Eugene, write: "We have observed a sudden change
in the polarization of epsilon Aur between 1982 Nov. 24 and Dec. 9 UT.
Measurements in the V filter of normalized Stokes parameters over
the interval Aug. 24-Nov. 24 averaged Q = +0.33 +/- 0.03, U = -2.3 +/-
0.05.  On Dec. 8 and 9 we observed values of Q = +0.017 +/- 0.013, U
= -2.404 +/- 0.110 and Q = +0.021 +/- 0.012, U = -2.353 +/- 0.014,
respectively, i.e., a 10-sigma drop in the Q parameter.  Our photometric
observations gave V = 3.75 +/- 0.01 on Dec. 9."


VY AQUARII
     On IBVS 2232 R. H. McNaught, Royal Greenwich Observatory,
writes that chart 225 of the Papadopoulos True Visual Magnitude
Star Atlas, photographed on 1973 July 31.9 UT, suggests that this
recurrent nova, previously known to have had outbursts in 1907 and
1962, was then again near maximum (mv = 9.7).  W. Wenzel, Sonneberg
Observatory, cables that the Sonneberg Sky Patrol confirms a
1973 outburst, with further observations as follows: 1973 July
30.0 UT, mpg = 9.5; Aug. 1.0, 9.9; 6.0, 10.6.


AM HERCULIS
     Visual magnitude estimates by M. Verdenet, Bourbon-Lancy,
France: 1982 Oct. 27.75 UT, 13.1; 28.76, 13.6; 30.75, 13.9;
31.75, 14.0; Nov. 1.75, 14.2; 3.76, 14.4; 4.75, 14.8; 6.75, [14;
9.75, 14.8; 11.80, 15.3.


1983 January 7                  (3759)              Brian G. Marsden

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