The optical variability of QSOs. II. The wavelength dependence
| dc.creator | Cristiani, S. | |
| dc.creator | Trentini, S. | |
| dc.creator | La Franca, F. | |
| dc.creator | Andreani, P. | |
| dc.date | 1996-10-15 | |
| dc.date.accessioned | 2026-07-07T02:22:05Z | |
| dc.date.available | 2026-07-07T02:22:05Z | |
| dc.description | The long-term variability of a sample of 149 optically selected QSOs in the field of the Selected Area 94 has been studied in the R-band. The relations between variability and luminosity and between variability and redshift have been investigated by means of ``robust'' statistical estimators, allowing to disentangle the effects of the measurement errors. The results are compared with the corresponding properties of the variability in the B-band for the same sample. An anti-correlation between the R-band variability and the intrinsic luminosity is found, analogously to what is observed in the B-band. The amplitude of the R-band variability turns out to be smaller (of a factor $1.13 \pm 0.05$) than the B-band variability. The implications in terms of the black-hole, starburst and microlensing models are discussed. | |
| dc.description | 9 pages, 6 figures, A&A-Latex. Accepted for publication in Astronomy & Astrophysics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9610108 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9610108 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10743 | |
| dc.subject | Astrophysics | |
| dc.title | The optical variability of QSOs. II. The wavelength dependence | |
| dc.type | text |