KAIT discovery of an uncataloged quasar at z = 1.08 : KAIT J20233743-19163425
ATel #5425; W. Zheng, University of California, Berkeley, S. B. Cenko, NASA / Goddard Space Flight Center, P. L. Kelly, K. I. Clubb, M. L. Graham, J. Mauerhan, A. V. Filippenko, University of California, Berkeley
on 26 Sep 2013; 22:22 UT
Credential Certification: Weikang Zheng (zwk@umich.edu)
Subjects: Optical, Quasar
The object KAIT J20233743-19163425, which has a corresponding USNO
B1.0 counterpart (0707-0791917) at the same location with B2 = 20.57
mag in USNO B1.0 catalog, was found to be brightened by more than
0.5 mag in the KAIT clear-band image on June 17 UT during our normal
supernova searching campaign. A CCD spectrum (range 450-960 nm) was
obtained with the 10-m Keck II telescope (+ DEIMOS spectrograph) at
Keck Observatory on Sep. 10.36 UT. The spectrum shows a blue continuum
with a strong, broad emission line around 5800A having FWHM ~ 20 nm.
The spectrum shape matches the composite SDSS quasar spectrum, assuming
the broad emission feature is produced by Mg II 280nm, placing the
object at redshift of z = 1.08. An finding chart was posted at the
following website: http://astro.berkeley.edu/~zwk/findingchart/KAIT_J20233743-19163425.jpg
