other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
1999MNRAS.303..711L - Mon. Not. R. Astron. Soc., 303, 711-720 (1999/March-2)
Emission within a damped Lyman alpha absorption trough: the complex sightline towards Q2059-360.
LEIBUNDGUT B. and ROBERTSON J.G.
Abstract (from CDS):
The emission feature has a large velocity offset of +490 km.s–1 with respect to the DLA system, and is resolved in velocity, comprising two components with a separation of ∼300 km.s–1. We consider three possibilities. (1) Both emission and absorption occur within an object similar to the high-redshift Lyman-break galaxies. (2) The emission feature arises from an object distinct from both the DLA absorber and the QSO, perhaps a young star-forming galaxy or a protogalactic clump. It could be associated with the DLA absorber and perhaps the QSO in a compact group or cluster. (3) The redshifts are such that the emission feature could be caused by narrow-line region filaments of the QSO, if the DLA absorption covers a sufficiently small angular size to allow the filaments to be seen beyond the edge of the DLA cloud.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): galaxies: distances and redshifts - galaxies: formation - quasars: absorption lines - quasars: emission lines - quasars: individual: Q2059-360 - cosmology: observations
Simbad objects: 7
To bookmark this query, right click on this link: simbad:1999MNRAS.303..711L and select 'bookmark this link' or equivalent in the popup menu