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- From: newberry@aquarius.as.arizona.edu (Mike Newberry)
- Newsgroups: sci.astro
- Subject: supernova in M31
- Message-ID: <1992Nov23.220837.22552@organpipe.uug.arizona.edu>
- Date: 23 Nov 92 22:08:37 GMT
- Sender: Michael V. Newberry
- Organization: University of Arizona, Tucson, AZ
- Lines: 58
-
-
- New supernova in M31. The following IAU circular came out Friday:
-
-
-
- Circular No. 5658
- 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 IN M31
- James Bryan, Georgetown, TX, reports his discovery of a nova
- in the nuclear bulge of M31, found on Technical Pan photographs
- taken by W. Wren using the McDonald Observatory 0.76-m telescope.
- The nova is located at R.A. = 0h40m16s.5 +/- 0s.5, Decl. =
- +40 58'11" +/- 5" (equinox 1950.0). A field star (star 51 of
- Ciardullo et al. 1987, Ap.J. 318, 520; B = 17.1, V = 16.4) is lo-
- cated 11" west-northwest of the nova. The following V magnitudes
- are available (those by Bryan were from Tech Pan photographs with a
- 0.40-m telescope): Oct. 26.09 UT, [18.5 (Bryan); Nov. 9.08, 17.2
- (Wren); 11.17, 17.2 (Wren); 15.11, 17.2 (Bryan).
- A. V. Filippenko, T. Matheson, and L. C. Ho, University of
- California at Berkeley, report that CCD spectrograms (range 320-
- 1000 nm) obtained on Nov. 18 UT with the Shane 3-m reflector at
- Lick Observatory reveal that Bryan's new object is indeed a nova.
- Intense hydrogen Balmer emission lines are present on a weak con-
- tinuum, as are fainter lines of Fe II. The spectrum of faint star
- located nearby (within 1"-2") is superposed on the nova spectrum;
- thus, part of the weak continuum in the spectrum is probably due to
- the adjacent star.
-
-
- GRS 1915+105 AND B1900+14
- J. Lochner and L. Whitlock, Goddard Space Flight Center, NASA,
- and Universities Space Research Association, communicate: "We have
- examined the Vela 5B data in the region of the x-ray transient GRS
- 1915+105 (IAUC 5590, 5619). The Vela 5B data base covers the ener-
- gy range 3-12 kev from 1969 May to 1979 June. To a sensitivity of
- 0.1 Crab, we have found no x-ray activity lasting longer than 2.3
- days in the region of GRS 1915+105. A recently reported soft gam-
- ma-ray repeater has been discovered in this region (IAUC 5567, and
- C. Kouveliotou, Compton Gamma Ray Conf., St. Louis, 1992 Oct.),
- which may be associated with either the transient or the soft gam-
- ma-ray repeater B1900+14. To further check the possible associa-
- tion between x-ray transients and soft gamma-ray events, we care-
- fully examined the Vela 5B data covering the 1979 March timeframe,
- in which Mazets et al. (1979, Sov. Astron. Lett. 5, 343) reported
- events from B1900+14. Good sky coverage allows us to rule out the
- presence of any x-ray transient event from either GRS 1915+105 or
- B1900+14 in early 1979."
-
-
- 1992 November 20 (5658) Daniel W. E. Green
-