Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 4780: 1989K; 1989B; V348 Sgr; 3C 279; NGC 5548

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 4779 SEARCH Read IAUC 4781
IAUC number 

                                                  Circular No. 4780
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 or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


SUPERNOVA 1989K IN NGC 5375
     R. P. Kirshner, Center for Astrophysics, reports that
observations by R. Marzke and himself with the Multiple-Mirror
Telescope on May 12.1 UT confirm that this is a type II supernova some
months after maximum (cf. IAUC 4778).  Broad H alpha emission is
present at 12 000 km/s FWZI.  He provides the following precise
position: R.A. = 13 54 45.35, Decl. = +29 24 37.1 (equinox 1950.0,
uncertainty 1"-2").


SUPERNOVA 1989B IN NGC 3627
     C. Pollas, Observatoire de la Cote d'Azur, communicates the
following CCD Johnson photometry obtained by J. P. Dambrine, A. Klotz
and J. Grange on Mar. 25.88 UT with the 1-m telescope at Pic du Midi:
V = 13.99 +/- 0.05, R = 13.39 +/- 0.05, I = 12.93 +/- 0.1.


V348 SAGITTARII
     R. H. McNaught, Siding Spring Observatory, communicates that A.
Pearce, Woodlands, Western Australia, reports a fading of this unique
variable (cf. IAUC 4399) from mag 12.5 in March and April to fainter
than mag 13.9 on May 5.87 UT.


3C 279
     A. Sadun, Agnes Scott College; S. Fajardo, Pomona College; and M.
Carini, Georgia State University, provide the following photoelectric
photometry: Mar. 21 UT, V = 15.40, B-V = +0.60 (0.6-m telescope,
Lowell Observatory); Apr. 7, V = 13.75, B-V = +0.66 (0.6-m telescope,
Table Mountain Observatory).


NGC 5548
     H. Netzer, D. Maoz, A. Laor, H. Mendelson, N. Brosch, E.
Leibowitz, E. Almoznino, S. Beck and T. Mazeh, Wise Observatory,
report: "We monitored the Seyfert galaxy NGC 5548 during 1988
Feb.-July at intervals averaging 3.4 days.  We find a correlated
month-long pulse in the optical continuum and H beta.  Analysis shows
that the emission line lags the continuum by 7 days.  The Broad Line
Region in this galaxy is smaller than 14 light days at the 95-percent
significance level."


1989 May 16                    (4780)              Brian G. Marsden

Read IAUC 4779 SEARCH Read IAUC 4781

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

Valid HTML 4.01!