A Possible Optical Counterpart to XTE J1550--564
ATel #34; Jerome Orosz (Penn State), Charles Bailyn, Raj Jain (Yale)
on 10 Sep 1998; 02:33 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Jerome A. Orosz (orosz@astro.psu.edu)
Subjects: Optical, X-ray, Transient
Referred to by ATel #: 37
We
report YALO consortium observations using the Yale 1m
telescope at Cerro Tololo
Interamerican Observatory and the ANDICAM CCD camera. We have identified
a possible optical counterpart to the recent
X-ray transient XTE J1550-564
(IAUC 7008 ) in V-band images obtained September 8.99 UT.
The J2000 coordinates of the candidate are
R.A. = 15h51m04s, Decl. = -56o28'37.5", with errors on each value
of about +/- 3 arcseconds. This object is not visible on an
image obtained from the Digitized Sky Survey. We estimate a V
magnitude of V=16 based on comparions with nearby stars
selected from the Hubble Guide Star Catalog.
Further observations, especially spectroscopic confirmation, are
urgently needed. A finding chart may be obtained via the
World Wide Web at http://www.astro.psu.edu/users/orosz/xte.html.
