Optical monitoring of the z=4.40 quasar Q 2203+292

Details Optical monitoring of the z=4.40 quasar Q 2203+292 Optical monitoring of the z=4.40 quasar Q 2203+292

2008-01-24

arxiv.org/abs/0801.3729v1

Astronomy and Astrophysics

Astrophysics

9 pages, 8 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2008.12990.x

We report Cousins R-band monitoring of the high-redshift (z=4.40) radio quiet quasar Q 2203+292 from May 1999 to October 2007. The quasar shows maximum peak-to-peak light curve amplitude of ~0.3 mag during the time of our monitoring, and ~0.9 mag when combined with older literature data. The rms of a fit to the light curve with a constant is 0.08 mag and 0.2 mag, respectively. The detected changes are at ~3-sigma level. The quasar was in a stable state during the recent years and it might have undergone a brightening event in the past. The structure function analysis concluded that the object shows variability properties similar to those of the lower redshift quasars. We set a lower limit to the Q 2203+292 broad line region mass of 0.3-0.4 M_odot. Narrow-band imaging search for redshifted Ly_alpha from other emission line objects at the same redshift shows no emission line objects in the quasar vicinity.

Affiliated with

Also associated with

No associations

Rating

Optical monitoring of the z=4.40 quasar Q 2203+292 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical monitoring of the z=4.40 quasar Q 2203+292, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical monitoring of the z=4.40 quasar Q 2203+292 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-283070