Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

10

Galaxies: Active, Galaxies: High-Redshift, Galaxies: Individual (4C 40.36, 4C 48.48), Infrared: Galaxies

Scientific paper

We report on the rest-frame optical-line emission from the extended gas in two high-redshift radio galaxies, 4C 48.48 at z=2.343 and 4C 40.36 at z=2.265. These are among the first observations to obtain rest-frame optical spectra for distinct knots of gas within a high-redshift radio galaxy. Although the dominant ionization mechanism in both sources is photoionization by the central AGNs, we find evidence of another mechanism within the off-nuclear emission of each source. We measure [O II], [Ne III] and [O III] for several regions in 4C 48.48; these measurements indicate shock ionization in one region. We measure seven lines in 4C 40.36 and compare the on- and off-nuclear emission from the two strongest, Hα and [O III] we find that [O III]/Hα is at least a factor of 4 weaker off-nucleus, suggesting star formation in the extended region.

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

Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies 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 Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1387808

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