Central Bureau for Astronomical Telegrams
IAUC 5272: DEBEHOGNE'S OBJECT IN Lib; 1991 JY
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 5273
Circular No. 5272
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
DEBEHOGNE'S OBJECT IN LIBRA
M. Della Valle and P. Padovani, European Southern Observatory;
and P. Rafanelli, Padova Observatory, communicate: "Analysis of CCD
spectra obtained at La Silla on Mar. 21 UT with the ESO/Max-Planck-
Institut 2.2-m telescope (+ Boller and Chivens spectrograph, range
380-930 nm, resolution 2 nm) and on Mar. 21.3 with the ESO 1.52-m
telescope (range 460-750 nm, resolution 0.9 nm) reveal that the object
discovered by Debehogne (IAUC 5131) is a galaxy, definitely not
a dwarf nova. The only lines present in the spectrum are H-alpha,
[N II] (654.8, 658.3 nm), and [S II] (671.6, 673.1 nm), and they
show an instrumental profile (FWHM = 0.9 nm). No trace of either
H-beta or [O III] is detectable. All lines are redshifted, and
their displacement corresponds to z = 0.0365. The line ratio log
([N II]/H-alpha) = -0.50 indicates that the gas is ionized by a
thermal source, as it should be in typical H II regions. On the
other hand, the ratio log ([S II]/H-alpha) = -0.30 is too high for
thermal ionization. The lack of any trace of [O III] at 495.9 and
500.7 nm supports the idea that this object may be an H II-region
galaxy."
M. Di Martino, Torino Observatory, reports photometric
observations obtained on 1990 Sept. 18 with the ESO 1-m telescope at La
Silla: V = 15.5, B-V = +0.63, U-B = -0.47.
1991 JY
Extension to the ephemeris on IAUC 5269:
1991 ET R.A. (1950) Decl. Delta r V
May 24 14 12.38 -27 10.4 0.139 1.140 12.6
26 13 41.67 -31 40.4
28 13 15.89 -34 50.9 0.177 1.152 13.5
30 12 54.62 -37 05.0
June 1 12 37.21 -38 40.9 0.222 1.163 14.2
3 12 22.97 -39 51.0
5 12 11.32 -40 43.7 0.271 1.174 14.8
7 12 01.76 -41 24.5
9 11 53.91 -41 57.1 0.322 1.183 15.3
11 11 47.45 -42 24.0
13 11 42.13 -42 47.0 0.373 1.192 15.7
1991 May 23 (5272) Daniel W. E. Green
Read IAUC 5273
Our Web policy. Index to the CBAT/MPC/ICQ pages.
