10 papers · 1 filter
Detailed Analysis of Balmer Lines in a Sloan Digital Sky Survey Sample of 90 Broad Line Active Galactic Nuclei
G. La Mura, L. Č. Popović, S. Ciroi +2
In order to contribute to the general effort aiming at the improvement of our knowledge about the physical conditions within the Broad Line Region (BLR) of Active Galactic Nuclei (…
Optical and infrared properties of V1647 Orionis during the 2003-2006 outburst. II. Temporal evolution of the eruptive source
D. Fedele, M. E. van den Ancker, M. G. Petr-Gotzens +1
The occurrence of new FU Orionis-like objects is fundamental to understand the outburst mechanism in young stars and their role in star formation and disk evolution. Our work is ai…
New photometric and spectroscopic observations of the Seyfert galaxy Mrk 315
S. Ciroi, V. L. Afanasiev, A. V. Moiseev +5
We present new important results about the intermediate-type Seyfert galaxy Mrk 315, recently observed through optical imaging and integral-field spectroscopy. Broad-band images we…
Nuclear Starbursts in Nearby Seyfert Galaxies
A. Romano, A. Rifatto, S. Ciroi +2
Active galaxies are often associated with starbursts, which are possible sources of fuelling for the nuclear black holes. By means of optical (3500-7500 A) spectroscopic and narrow…
Stellar velocity dispersion in NLS1 galaxies
V. Botte, S. Ciroi, F. Di Mille +2
Several authors recently explored the Black-Hole mass (M_BH) vs. stellar velocity dispersion (sigma_*) relationship for Narrow Line Seyfert 1 galaxies (NLS1s). Their results are mo…
The peculiar galaxy Mkn 298 revisited through integral field spectroscopy
M. Radovich, S. Ciroi, M. Contini +3
Spectroscopic and imaging data of the peculiar galaxy Mkn 298 are presented in this paper. Narrow-band Halpha and broad-band R images are used to study the star formation rate in t…