Rawlings, Steve, Lacy, Mark and Eales, Stephen Anthony  ORCID: https://orcid.org/0000-0002-7394-426X
1991.
Near-infrared spectrophotometry of eight 3CR radiogalaxies - The first detections of O III 500.7 and S III 953.2 forbidden emission lines in galaxies with Z greater than 1.
Monthly Notices of the Royal Astronomical Society
251
, pp. 17-21.
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Abstract
The results are presented of near-IR spectrophotometry of eight 3CR radiogalaxies with redshifts in the range of 0.256 to 1.575. The narrow O III 500.7 forbidden emission line was detected in 3C13 (z = 1.351), and the narrow S III 953.2 forbidden emission line in 3C79 (z = 0.256), in the northern near-IR knot to 3C356 (z = 1.079), and marginally in 3C368 (z = 1.132). These emission lines are among the faintest to be detected with near-IR spectroscopy, and include the first measurements of forbidden O III 500.7 and S III 953.2 in any galaxy with z greater than 1. It is shown that narrow-line emission can sometimes account for a substantial fraction (about 25 percent) of the broad-band near IR flux arising from the substructures of high-z radiogalaxies, but that this fraction is strongly dependent on, and therefore a valuable probe of, physical conditions within the substructures.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Subjects: | Q Science > QB Astronomy |
| Publisher: | Oxford University Press |
| ISSN: | 0035-8711 |
| Related URLs: | |
| Last Modified: | 24 Oct 2022 11:46 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/49273 |
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