Bibcode
Scarpa, R.; Falomo, R.; Pian, E.
Bibliographical reference
Astronomy and Astrophysics, v.303, p.730
Advertised on:
11
1995
Journal
Citations
25
Refereed citations
23
Description
Optical spectrophotometry of the active galaxy PKS 0521-365 over a
period of 7 years is reported, together with the analysis of IUE
archival spectra. The Hα emission line intensity varied by more
than a factor of 2 during the monitoring. Similar amplitude variations
are observed in the optical and UV continuum, which however are not
simply correlated with the line intensity variations. The broad
component of Hα is found to be asymmetric with a longer extension
towards the red. The Lyα, the only line detected in the UV band,
appears symmetric and exhibits marginal intensity variability.