Ca depletion and the presence of dust in large scale nebulosities in radiogalaxies (II)
| dc.creator | Villar-Martin, M. | |
| dc.creator | Binette, L. | |
| dc.date | 1996-05-31 | |
| dc.date.accessioned | 2026-07-07T02:21:18Z | |
| dc.date.available | 2026-07-07T02:21:18Z | |
| dc.description | We investigate here the origin of the gas observed in extended emission line regions surrounding AGNs. We use the technique of calcium depletion as a test to prove or disprove the existence of dust in such a gas in order to discriminate between two main theories: (1) a cooling process from a hotter X-ray emitting phase surrounding the galaxy, (2) merging or tidal interaction between two or more components. We have obtained long slit spectroscopy of a sample of objects representative of different galaxy types although our main interest focus on radio galaxies. The spectral range was set to always includethe [CaII]$λλ$7291,7324 doublet. The faintness or absence of such lines is interpreted as due to the depletion of calcium onto the dust grains and, therefore, is a proof of the existence of dust mixed with the gas in the EELRs. | |
| dc.description | Accepted for publication in A&A. 8 pages, 3 figures (tarred, gzipped LaTeX & postscript files) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9605195 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9605195 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10502 | |
| dc.subject | Astrophysics | |
| dc.title | Ca depletion and the presence of dust in large scale nebulosities in radiogalaxies (II) | |
| dc.type | text |