Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-08-25
Astron.J. 120 (2000) 2183
Astronomy and Astrophysics
Astrophysics
15 pages, 4 figures, submitted to AJ
Scientific paper
10.1086/316834
We report the discovery of a pair of z = 4.25 quasars with a separation of 33 arcseconds. The brighter of the two objects was identified as a high-redshift quasar candidate from Sloan Digital Sky Survey multicolor imaging data, and the redshift was measured from a spectrum obtained with the Hobby-Eberly Telescope. The slit orientation of this observation {\it by chance} included another quasar, approximately one magnitude fainter and having the same redshift as the target. This is the third serendipitous discovery of a z > 4 quasar. The differences in the relative strengths and profiles of the emission lines suggest that this is a quasar pair and not a gravitational lens. The two objects are likely to be physically associated; the projected physical separation is approximately 210 $h_{50}^{-1}$ kpc and the redshifts are identical to $\approx$ 0.01, implying a radial physical separation of 950 $h_{50}^{-1}$ kpc or less. The existence of this pair is strong circumstantial evidence that $z \sim 4$ quasars are clustered.
Anderson John E. Jr.
Bahcall Neta A.
Brinkmann John
Brunner Robert
Csabai István
No associations
LandOfFree
Discovery of a Close Pair of z = 4.25 Quasars from the Sloan Digital Sky Survey 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 Discovery of a Close Pair of z = 4.25 Quasars from the Sloan Digital Sky Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a Close Pair of z = 4.25 Quasars from the Sloan Digital Sky Survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-433399