Central Bureau for Astronomical Telegrams

IAUC 7284: XTE J1859+226; 1999ee

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                                                  Circular No. 7284
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


XTE J1859+226
     S. Chaty, C. A. Haswell, and A. J. Norton, Open University;
R. I. Hynes, Southampton University; I. Smail, Durham University;
J.-E. Solheim and R. Ostensen, Tromso University; T. R. Greve and
J. Fynbo, Copenhagen University; K. Horne, K. O'Brien, and W.
Skidmore, University of St. Andrews; R. Fried, Flagstaff, AZ; K.
Krisciunas, University of Washington; P. M. Garnavich, M. Garcia,
and M. Contreras, Harvard-Smithsonian Center for Astrophysics; E.
T. Harlaftis, National Observatory, Athens; P. A. Charles and T.
Shahbaz, Oxford; E. Kuulkers, Space Research Organization
Netherlands; W. Chen and C. R. Shrader, Goddard Space Flight
Center, NASA; S. B. Howell, University of Wyoming; and M. Wagner,
Ohio State University, report the following near-infrared
photometry and follow-up optical photometry of the counterpart to
the x-ray transient XTE J1859+226 (IAUC 7274, 7279):  Oct. 14.2 UT,
J = 14.508 +/- 0.011, H = 14.231 +/- 0.014, K = 13.833 +/- 0.013
(3.8-m U.K. Infrared Telescope + UFTI).  Oct. 13.90, B = 15.9 +/-
0.1; Oct. 14.85, B = 15.407 +/- 0.034, V = 15.478 +/- 0.035, R =
15.13 +/- 0.11, I = 14.904 +/- 0.027; Oct. 16.9, B = 16.34 +/-
0.17, V = 15.603 +/- 0.043, R = 15.324 +/- 0.042, I = 15.005 +/-
0.050 (2.5-m Nordic Optical Telescope at La Palma).  Oct. 14.11, B
= 16.134, V = 15.75, R = 15.294 (Braeside Observatory 0.40-m
telescope at Flagstaff; uncertainties < 0.03).  Oct. 14.1173, V =
15.501 +/- 0.013, B-V = +0.344 +/- 0.023; Oct. 14.1340, V = 15.484
+/- 0.013, B-V = +0.388 +/- 0.023; Oct. 15.1178, V = 15.329 +/-
0.010, B-V = +0.377 +/- 0.017, V-R = +0.267 +/- 0.016, V-I = +0.537
+/- 0.019 (Manashtash Ridge Observatory 0.76-m telescope).  Oct.
15.1, R (Kitt Peak Harris) = 15.06 +/- 0.02 (Fred L. Whipple
Observatory 1.2-m telescope).  Observations with the 0.94-m James
Gregory Telescope at St. Andrews on Oct. 13.9 showed that, at V =
15.4 +/- 0.15, the source exhibited evidence of modulation through
a 0.04-mag amplitude.


SUPERNOVA 1999ee IN IC 5179
     A. Williams, Perth Observatory, reports that J. Biggs and A.
Verveer obtained four unfiltered CCD images of SN 1999ee (cf. IAUC
7272) around Oct. 18.49 UT with the Perth 0.25-m Mike Candy
Telescope, yielding the following precise position for the
supernova:  R.A. = 22h16m10s.00 +/- 0s.02, Decl. = -36o50'39".7 +/-
0".2 (equinox 2000.0; GSC reference stars), which is about 13" east
and 3".5 south of the galaxy's center; the magnitude was estimated
as 15.5 +/- 0.5.

                      (C) Copyright 1999 CBAT
1999 October 19                (7284)            Daniel W. E. Green

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