Multiwavelength observations of XTE J1859+226
ATel #48; S. Chaty (Open University)
on 16 Oct 1999; 23:05 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Sylvain Chaty (S.Chaty@open.ac.uk)
Subjects: Radio, Millimeter, Sub-Millimeter, Far-Infra-Red, Infra-Red, Optical, Ultra-Violet, X-ray, Gamma Ray, >GeV, Binary, Black Hole, Star, Transient, Variables
Referred to by ATel #: 49, 50
Multiwavelength observations of the Transient source XTE J1859+226 (IAUC # 7274 ):
We have scheduled simultaneous HST and XTE observations of the new X-ray transient
XTE J1859+226, planned for
October 18th 1999 02:00-09:10 UT.
Supporting ground-based observations (simultaneous, near-simultaneous, and following the
evolution over days/weeks) would be extremely helpful.
If you can observe simultaneously with HST and XTE, high time-resolution
data (< 10 seconds) will be particularly useful. It will also
be very useful to know what the source did in the gaps between our
exposures, appended below both for HST and XTE.
Details of the target are given in IAUC # 7274 , IAUC # 7276 , IAUC # 7278 , IAUC # 7279 ,
IAUC # 7282 and ATEL #47.
The coordinates are R.A. = 18h58m41s.51, Decl. = +22o39'30".2 (J2000.0).
Garnavich et al. (IAUC 7276 ) give a finding chart (link below).
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Here is the detailed timing of the HST science exposures of XTE J1859+226.
All Times are UT on October 18, 1999:
02:18:25-02:57:05 exposure 2 (science) Far-UV spectroscopy;
03:41:10-04:20:21 exposure 3 (science) Near-UV spectroscopy;
05:17:53-05:57:23 exposure 4 (science) Far-UV spectroscopy;
06:05:27-06:10:28 exposure 5 (science) Near-UV spectroscopy;
07:11:44 end wavelength calibration, exposure 6 (science)
STIS buffer dump and readout, and exposure 7 (science)
Optical Spectroscopy;
07:16:18-07:31:22 exposure 9 (science) Red/IR spectroscopy;
08:31:19-09:10:49 exposure 11 (science) Far-UV spectroscopy;
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Following is the detailed timing of the XTE pointed observations
of XTE J1859+226.
All times are UT on October 18, 1999:
02:12:00-02:56:00 pointed observation 1 (science);
03:48:00-04:39:00 pointed observation 2 (science);
05:24:00-06:22:00 pointed observation 3 (science);
07:00:00-08:02:00 pointed observation 4 (science);
08:36:00-09:38:00 calibration;
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Please do not hesitate to contact us if you wish in order to achieve the most
fruitful multiwavelength campaign.
Many thanks,
C.A. Haswell, S. Chaty, A.J. Norton (Open University),
W. Chen (NASA/GSFC/U.MD.) and R.I. Hynes (Southampton University).
finding chart
