Optical Spectroscopy of SWIFT J1753.5-0127
ATel #551; M. A. P. Torres (CfA), D. Steeghs (CfA), M. R. Garcia (CfA), J. E. McClintock (CfA), J. M. Miller (CfA), P. G. Jonker (CfA/SRON), P. J. Callanan (University College, Cork), P. Zhao (CfA), J. Huchra (CfA), Vivian U (CfA), C. Hutcheson (CfA)
on 3 Jul 2005; 12:42 UT
Credential Certification: Manuel Torres (mtorres@cfa.harvard.edu)
Subjects: Request for Observations, Black Hole, Transient
Spectra of the optical counterpart to the gamma ray source SWIFT J1753.5-0127 (ATEL #546,#547,#549,#550) were acquired on 2005 July 3th 03:52-09:48 UT with the FAST spectrograph
mounted at the F. L. Whipple Observatory 1.5m telescope. The spectra
show a blue continuum with Halpha being the only emission line
detected in the averaged spectrum (S/N~30 at Halpha). This line
has an equivalent width of ~3 angstroms and FWHM~2000 km/s. The NaD
doublet at 5890/96 angstroms is also evident with an equivalent width
of ~1.5 angstroms.
We encourage follow-up observations of this source at all wavelengths.
