111 citations · 894 across the 36 of their papers we have counts for
19 papers · 1 filter
Early-type galaxies in the near-infrared: 1.5-2.4\mum spectroscopy
M. Cesetti, V. D. Ivanov, L. Morelli +6
Near-infrared (hereafter NIR) data may provide complementary information to the traditional optical population synthesis analysis of unresolved stellar populations because the spec…
Optical and IR observations of SN 2002dj: some possible common properties of fast expanding SNe Ia
G. Pignata, S. Benetti, P. A. Mazzali +17
As part of the European Supernova Collaboration we obtained extensive photometry and spectroscopy of the type Ia SN 2002dj covering epochs from 11 days before to nearly two years a…
The impact of encounters on the members of Local Group Analogs. A view from GALEX
L. M. Buson, D. Bettoni, L. Bianchi +3
The bright galaxy population of the Local Group Analog (LGA) LGG 225 has been imaged with the Galaxy Evolution Explorer (GALEX) through its Far- and Near-UV wavebands. A significan…
The GALEX UV emission in shell galaxies
A. Marino, R. Rampazzo, R. Tantalo +4
Shell galaxies are widely considered the debris of recent accretion/merging episodes. Their high frequency in low density environment suggests that such episodes could be among the…
Field Camera Unit for WSO-UV: Phase A Study Report
I. Pagano, F. Bacciotti, L. Bedin +33
World Space Observatory UltraViolet (WSO-UV) is a multipurpose space observatory, made by a 170 cm aperture telescope, capable of UV high-resolution spectroscopy, long slit low-res…
The GALEX UV emission in shell galaxies: tracing galaxy "rejuvenation" episodes
R. Rampazzo, A. Marino, R. Tantalo +6
We present the GALEX far FUV and near NUV ultraviolet imaging of three nearby shell galaxies, namely NGC 2865, NGC 5018 and NGC 7135. The system of shells and fine structures visib…
NGC5719/13: interacting spirals forming a counter-rotating stellar disc
D. Vergani, A. Pizzella, E. M. Corsini +4
(Context) When a galaxy acquires material from the outside, it is likely that the resulting angular momentum of the accreted material is decoupled from that of the pre-existing gal…
The Star Formation History of the Virgo early-type galaxy NGC4435: the Spitzer Mid Infrared view
P. Panuzzo, O. Vega, A. Bressan +7
We present a population synthesis study of NGC4435, an early-type Virgo galaxy interacting with NGC4438. We combine new spectroscopic observations obtained with the Spitzer Space T…
SPITZER IRS spectra of Virgo early type galaxies: detection of stellar silicate emission
A. Bressan, P. Panuzzo, L. Buson +7
We present high signal to noise ratio Spitzer Infrared Spectrograph observations of 17 Virgo early-type galaxies. The galaxies were selected from those that define the colour-magni…
NGC 7679: an anomalous, composite Seyfert 1 galaxy whose, X-ray luminous AGN vanishes at optical wavelengths
L. M. Buson, M. Cappellari, E. M. Corsini +3
Morphological disturbances and gas kinematics of the SB0 galaxy NGC 7679=Arp 216 are investigated to get clues to the history of this highly composite object, where AGN and starbur…
New Candidate EHB Stars in the Open Cluster NGC 6791: Looking Locally into the UV-upturn Phenomenon
L. M. Buson, E. Bertone, A. Buzzoni +1
Relying on U,B imagery at the Italian Telescopio Nazionale Galileo (TNG), we report here the discovery of a sample of 13 new UV-bright post-HB candidate stars in the field of the g…
Is the Giant Elliptical Galaxy NGC5018 a Post-Merger Remnant?
L. M. Buson, F. Bertola, A. Bressan +2
NGC5018, one of the weakest UV emitters among giant ellipticals (gE) observed with IUE, appears to consist of an optical stellar population very similar to that of the compact, dwa…
Multiwavelength evidence for a 15-year periodic activity in the symbiotic nova V1016 Cygni
S. Parimucha, D. Chochol, T. Pribulla +2
The ~15.1 years period found in the long-term UBV photoelectric and photographic photometry of the symbiotic nova V1016 Cyg is detected also in the (J-K) colour index and in the UV…
The Quest for the Dominant Stellar Population in the Giant Elliptical NGC 5018
Lucio M. Buson, Francesco Bertola, David Burstein +1
Newly obtained HST/WFPC2 images of the disturbed elliptical galaxy NGC 5018 show that the average amount of internal reddening due to the its complex ``dust web'' is as low as E(B-…
UV Imaging of the Galaxy Cluster CL0939+4713 (Abell 851) at z=0.41
Lucio M. Buson, Francesco Bertola, Michele Cappellari +3
The first UV F300W and F218W WFPC2 observations of the rich galaxy cluster CL0939+4713 at z=0.41 are presented and discussed. UV/optical two-color and c-m diagrams of the sources d…
Central UV Spikes in two Galactic Spheroids
Michele Cappellari, Francesco Bertola, David Burstein +3
FOS spectra and FOC photometry of two centrally located, UV-bright spikes in the elliptical galaxy NGC 4552 and the bulge-dominated early spiral NGC 2681, are presented. These spec…
Objects in NGC 205 Resolved into Stellar Associations by HST Ultraviolet Imaging
Michele Cappellari, Francesco Bertola, David Burstein +3
We have obtained high resolution UV images with the HST+WFPC2 of the central region of the dwarf elliptical galaxy NGC 205. Our images reveal that many of the hot UV stars previous…
The Mini AGN at the Center of the Elliptical Galaxy NGC 4552 with HST
Michele Cappellari, Alvio Renzini, Laura Greggio +4
The complex phenomenology shown by the UV-bright, variable spike first detected with the Hubble Space Telescope (HST) at the center of the otherwise normal galaxy NGC 4552 is furth…
Coordinated UV-optical observations of quasars: the evolution of the Lyman absorption
S. Cristiani, E. Giallongo, L. M. Buson +2
The average flux decrement shortward the Ly emission, due to the well-known ``forest'' of absorptions, has been measured in the spectra of 8 quasars. Quasi-simultaneous optical…