6 papers · 1 filter
The High-Mass End of the Black Hole Mass Function: Mass Estimates in Brightest Cluster Galaxies
E. Dalla Bonta', L. Ferrarese, E. M. Corsini +5
We present Hubble Space Telescope imaging and spectroscopic observations of three Brightest Cluster Galaxies, Abell 1836-BCG, Abell 2052-BCG, and Abell 3565-BCG, obtained with the…
A new search for planet transits in NGC 6791
M. Montalto, G. Piotto, S. Desidera +12
Context. Searching for planets in open clusters allows us to study the effects of dynamical environment on planet formation and evolution. Aims. Considering the strong dependence o…
The quest for Type 2 quasars: Chandra observations of luminous obscured quasars in the Sloan Digital Sky Survey
C. Vignali, D. M. Alexander, A. Comastri
We report on new Chandra exploratory observations of six candidate Type 2 quasars at z=0.49-0.73 selected among the most [OIII] luminous emitters from the Sloan Digital Sky Survey…
3D Simulations of the ISM pollution by SNII and SNI in dwarf spheroidal galaxies
Andrea Marcolini, Fabrizio Brighenti, Annibale D'Ercole +1
We present preliminary results of 3-D hydro simulations of the interstellar medium evolution in dwarf spheroidal galaxies undergoing star formation for the first time. The star for…
Type II quasar candidates in the Sloan Digital Sky Survey: evidence for X-ray obscuration
C. Vignali, D. M. Alexander, A. Comastri
Recent X-ray surveys with Chandra and XMM-Newton have found several genuine Type II quasars, the long sought-after population of high-luminosity (high-redshift) Seyfert 2 galaxies,…
Chemical and dynamical evolution in gas-rich dwarf galaxies
Simone Recchi, Francesca Matteucci, Annibale D'Ercole
We study the effect of a single, instantaneous starburst in a gas-rich dwarf galaxy on the dynamical and chemical evolution of its interstellar medium. We consider the energetic in…