Emission-Line Properties of MG2016+112: A Luminous Type-2 Quasar at High Redshift

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

8 pages, submitted to Astronomy and Astrophysics

Scientific paper

We present new high signal-to-noise ratio spectra of the components B and C of the gravitational lensing system MG2016+112. We show that image C displays strong emission lines of Ly$\alpha$, \NV, \CIV, \HeII, and \CIII redshifted to z=3.27, similar to images and B. We examine the emission-line flux ratios in order to put constraints on the lens models as well as to investigate the intrinsic nature of MG2016+112. The observed line ratios of B and C are consistent with those expected in the simple photo-ionization models for narrow-line region of active galactic nuclei (AGN) except for the enhanced \NV\ lines. The line ratios difference of components B and C can be interpreted as a difference in ionization parameters. This result is consistent with lens model prediction that C is a fold image of a slightly outer part of the nucleus. MG2016+112 is known to be very unique among the high-redshift AGN; it is neither an ordinary broad-line quasar nor a powerful radio galaxy as indicated by the width and flux ratio of the emission lines. Together with other observed properties discussed in literature, we argue that MG2016+112 is the highest redshift luminous radio-quiet type-2 quasar.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Emission-Line Properties of MG2016+112: A Luminous Type-2 Quasar at High Redshift 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 Emission-Line Properties of MG2016+112: A Luminous Type-2 Quasar at High Redshift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emission-Line Properties of MG2016+112: A Luminous Type-2 Quasar at High Redshift will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-222121

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.