153 citations · 375 across the 5 of their papers we have counts for
5 papers · 1 filter
ESO VLT optical spectroscopy of BL Lacertae objects. III. An extension of the sample
B. Sbarufatti, S. Ciprini, J. Kotilainen +4
We present results of an ongoing program at the ESO VLT for spectroscopy of BL Lac objects lacking a firm redshift estimate and here we report on 15 objects. For 11 sources we conf…
On the geometry of broad emission region in quasars
R. Decarli, M. Labita, A. Treves +1
We study the geometry of the Hbeta broad emission region by comparing the M_BH values derived from Hbeta through the virial relation with those obtained from the host galaxy lumino…
UV Dust Attenuation in Star-forming Galaxies: II Calibrating the A(UV) vs. L_TIR/L_UV relation
L. Cortese, A. Boselli, P. Franzetti +4
We investigate the dependence of the total-infrared (TIR) to UV luminosity ratio method for calculating the UV dust attenuation A(UV) from the age of the underlying stellar populat…
Are the black hole masses in Narrow Line Seyfert 1 galaxies actually small?
R. Decarli, M. Dotti, M. Fontana +1
Narrow Line Seyfert 1 galaxies (NLS1s) are generally considered peculiar objects among the broad class of Type 1 active galactic nuclei, due to the relatively small width of the br…
The census of nuclear activity of late-type galaxies in the Virgo cluster
R. Decarli, G. Gavazzi, I. Arosio +4
The first spectroscopic census of AGNs associated to late-type galaxies in the Virgo cluster is carried on by observing 213 out of a complete set of 237 galaxies more massive than…