Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 5791: N Aql 1993; EX Lup; 1993N

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 5790 SEARCH Read IAUC 5792

View IAUC 5791 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 5791
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 AQUILAE 1993
     T. Hirayama, National Astronomical Observatory, Tokyo, reports
that Minoru Yamamoto of Doi-cho, Okazaki-shi, Japan, has discovered
an apparent nova on T-Max 400 film (+ PO0 green filter).  The object
is located at R.A. = 19h10m.5, Decl. = +1 28' (equinox 1950.0).
Magnitude estimates, visual unless otherwise noted:  Apr. 17.780 UT,
[10 (Yamamoto; photographic); 28.802, [12 (P. Camilleri, Cobram,
Vic.; T-Max film); May 14.644 and 14.647, 7.6 (Yamamoto; photographic);
14.779, 7.6 (Y. Sakurai, Mito, Japan; Fuji HG-400 film);
15.009, 7.6 (M. Collins, Everton, Beds, U.K.; Kodak Tech Pan film);
15.604, 7.9 (Yamamoto); 15.648, 7.6 (Yamamoto; photographic);
16.541, 7.8 (Camilleri); 16.606, 8.0 (M. Yamada, Ishikawa, Japan);
16.640, 8.0 (Yamada); 16.653, 7.9 (M. Watanabe, Toyama, Japan);
17.19, 8.0 (M. Baldwin, Columbus, IN).


EX LUPI
     Observations by A. F. Jones, Nelson, New Zealand; and W. B.
Albrecht, Pahala, HI, indicate that this irregular variable is now
quite active.  Visual estimates by Jones, using the revised sequence
on IBVS 3808:  1993 Apr. 2.68 UT, 12.8; 14.73, 12.5; 16.46,
12.7; 17.73, 12.4; 18.68, 12.0; 19.64, 12.3; 20.42, 12.5; 21.68,
12.7; 24.68, 12.5; 25.46, 12.4; 27.49, 12.4; 28.69, 12.1; 29.38,
12.0; 29.73, 11.5; May 13.70, 11.4.
    Photometry by A. C. Gilmore and P. M. Kilmartin at Mt. John
shows that the star is brighter and bluer than observed by Bastien
and Mundt (1979, A.Ap. Suppl. 36, 57) in 1977 and 1979 and by
Gilmore (IBVS 3808) on 1992 Oct. 17:  1993 May 1.54, V = 12.27, U-B
= -0.50, B-V = +0.52, V-R = +0.54; 9.51, 12.81, -, +0.90, +0.71;
10.35, 12.69, -0.28, +0.83, -; 13.53, 11.58, -0.36, +0.39, +0.36.


SUPERNOVA 1993N IN UGC 5695
     J. Mueller, Palomar Observatory, forwards the following report
from J. R. Mould:  "SN 1993N is 7" west and 9" north of the galaxy
nucleus.  A spectrum obtained on May 14 UT by Mould and I. Smail
with the Hale 5-m telescope (+ Double Spectrograph) shows H-alpha
and H-beta in emission.  These line profiles show narrow cores a
few hundred km/s FWHM on broad pedestals 16 600 km/s FWZI for H-
alpha.  The Balmer lines are accompanied by very narrow [O III].
The galaxy redshift is 2940 km/s.  "


1993 May 17                    (5791)            Daniel W. E. Green

Read IAUC 5790 SEARCH Read IAUC 5792

View IAUC 5791 in .dvi or .ps format.

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

Valid HTML 4.01!