The NV/CIV ratio in high redshift radio galaxies

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dc.creatorFosbury, R. A. E.
dc.creatorVernet, J.
dc.creatorVillar-Martin, M.
dc.creatorCohen, M. H.
dc.creatorCimatti, A.
dc.creatorAlighieri, S. di Serego
dc.date1999-01-11
dc.date.accessioned2026-07-07T02:29:55Z
dc.date.available2026-07-07T02:29:55Z
dc.descriptionDeep Keck spectropolarimetry has been obtained of a sample of powerful radio galaxies with $z \sim 2.5 \pm 1$. In addition to a clear 2200Ådust scattering/extinction signature and an inverse correlation between the degree of continuum polarization and the Lyman-αemission line strength (relative to C IV), we find an intriguing positive correlation between the N~V/C IV ratio and the polarization. The line ratio, which varies by almost a dex amongst objects having a very similar ionization state, is most likely to indicate an abundance ratio. We speculate that the correlation with polarization represents a connection between nitrogen enhancement and dust production following a major starburst event connected with the birth of the quasar.
dc.description6 pages. pdf viewgraphs available at: http://ecf.hq.eso.org/~rfosbury/research/preprints/chemev98/ To appear in "ESO Conference on Chemical Evolution from Zero to High Redshift", Garching, Germany, October 14-16, 1998. ESO Astrophysics Symposia. Eds. J Walsh and M Rosa, Springer
dc.identifierhttps://arxiv.org/abs/astro-ph/9901115
dc.identifierhttp://arxiv.org/abs/astro-ph/9901115
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13661
dc.subjectAstrophysics
dc.titleThe NV/CIV ratio in high redshift radio galaxies
dc.typetext

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