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11 papers · 1 filter
Tagging the Chemical Evolution History of the Large Magellanic Cloud Disk
Emilio Lapenna, Alessio Mucciarelli, Livia Origlia +1
We have used high-resolution spectra obtained with the multifiber facility FLAMES at the Very Large Telescope of the European Southern Observatory to derive kinematic properties an…
High resolution reddening map in the direction of the stellar system Terzan 5
Davide Massari, Alessio Mucciarelli, Emanuele Dalessandro +7
We have used optical images acquired with the Hubble Space Telescope to construct the first high-resolution extinction map in the direction of Terzan 5, a peculiar stellar system i…
The central structure of Broad Absorption Line QSOs: observational characteristics in the cm-mm wavelength domain
G. Bruni, K. -H. Mack, D. Dallacasa +6
Accounting for ~20% of the total QSO population, Broad Absorption Line QSOs are still an unsolved problem in the AGN context. They present wide troughs in the UV spectrum, due to m…
The Dynamics and Metallicity Distribution of the Distant Dwarf Galaxy VV124
Evan N. Kirby, Judith G. Cohen, Michele Bellazzini
VV124 (UGC 4879) is an isolated, dwarf irregular/dwarf spheroidal (dIrr/dSph) transition-type galaxy at a distance of 1.36 Mpc. Previous low-resolution spectroscopy yielded inconsi…
X-ray gaseous emission in the galaxy M82
Piero Ranalli, Andrea Comastri, Livia Origlia +1
The main results from a deep X-ray observation of M82 are summarised: spatially-dependent chemical abundances, temperature structure of the gas, charge-exchange emission lines in t…
A mass estimate of an intermediate-mass black hole in omega Centauri
P. Miocchi
Context. The problem of the existence of intermediate-mass black holes (IMBHs) at the centre of globular clusters is a hot and controversial topic in current astrophysical research…