Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies

Details Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies Resolved Infrared Spectroscopy of Two High-Redshift Radio Galaxies

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...563...63c&link_type=abstract

The Astrophysical Journal, Volume 563, Issue 1, pp. 63-70.

Astronomy and Astrophysics

Astronomy

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.

Affiliated with

Also associated with

No associations

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

Comments { 0 }

Profile ID: LFWR-SCP-O-1387808