Publications (17)
Unveiling the corona of the Milky Way via ram-pressure stripping of dwarf satellites
A. Gatto, F. Fraternali, J. I. Read +3
The spatial segregation between dSphs and dIrrs in the Local Group has long been regarded as evidence of an interaction with their host galaxies. In this paper, we assume that ram-…
A Deep Learning Approach to Galaxy Cluster X-ray Masses
M. Ntampaka, J. ZuHone, D. Eisenstein +9
We present a machine-learning approach for estimating galaxy cluster masses from Chandra mock images. We utilize a Convolutional Neural Network (CNN), a deep machine learning tool…
Galactic fountains and the rotation of disc-galaxy coronae
F. Marinacci, F. Fraternali, C. Nipoti +3
In galaxies like the Milky Way, cold (~ 10^4 K) gas ejected from the disc by stellar activity (the so-called galactic-fountain gas) is expected to interact with the virial-temperat…
The mode of gas accretion onto star-forming galaxies
F. Marinacci, J. Binney, F. Fraternali +3
It is argued that galaxies like ours sustain their star formation by transferring gas from an extensive corona to the star-forming disc. The transfer is effected by the galactic fo…
Fountain-driven gas accretion by the Milky Way
F. Marinacci, F. Fraternali, J. Binney +3
Accretion of fresh gas at a rate of ~ 1 M_{sun} yr^{-1} is necessary in star-forming disc galaxies, such as the Milky Way, in order to sustain their star-formation rates. In this w…
On the origin of the warm-hot absorbers in the Milky Way's halo
A. Marasco, F. Marinacci, F. Fraternali
Disc galaxies like the Milky Way are expected to be surrounded by massive coronae of hot plasma that may contain a significant fraction of the so-called missing baryons. We investi…
Stationary models for the extra-planar gas in disc galaxies
F. Marinacci, F. Fraternali, L. Ciotti +1
The kinematics of the extra-planar neutral and ionised gas in disc galaxies shows a systematic decline of the rotational velocity with height from the plane (vertical gradient). Th…
Efficiency of gas cooling and accretion at the disc-corona interface
L. Armillotta, F. Fraternali, F. Marinacci
In star-forming galaxies, stellar feedback can have a dual effect on the circumgalactic medium both suppressing and stimulating gas accretion. The trigger of gas accretion can be c…
The origin of the high-velocity cloud complex C
F. Fraternali, A. Marasco, L. Armillotta +1
High-velocity clouds consist of cold gas that appears to be raining down from the halo to the disc of the Milky Way. Over the past fifty years, two competing scenarios have attribu…
Exact density-potential pairs from complex shifted axisymmetric systems
L. Ciotti, F. Marinacci
In a previous paper the complex-shift method has been applied to self-gravitating spherical systems, producing new analytical axisymmetric density-potential pairs. We now extend th…
Galactic fountains and gas accretion
F. Marinacci, J. Binney, F. Fraternali +3
Star-forming disc galaxies such as the Milky Way need to accrete $\gsim$ 1 of gas each year to sustain their star formation. This gas accretion is likely to come from t…
Magnetic fields in cosmological simulations of disk galaxies
R. Pakmor, F. Marinacci, V. Springel
Observationally, magnetic fields reach equipartition with thermal energy and cosmic rays in the interstellar medium of disk galaxies such as the Milky Way. However, thus far cosmol…
The survival of gas clouds in the Circumgalactic Medium of Milky Way-like galaxies
L. Armillotta, F. Fraternali, J. K. Werk +2
Observational evidence shows that low-redshift galaxies are surrounded by extended haloes of multiphase gas, the so-called 'circumgalactic medium' (CGM). To study the survival of r…
An off-centred bulge or a satellite? Hydrodynamical -body simulations of the disc galaxy NGC 5474
R. Pascale, M. Bellazzini, M. Tosi +3
We present dynamical models of the star-forming galaxy NGC 5474 based on -body hydrodynamical numerical simulations. We investigate the possible origin of the compact round stel…
Chemodynamics of barred galaxies in cosmological simulations: On the Milky Way's quiescent merger history and in-situ bulge
F. Fragkoudi, R. J. J. Grand, R. Pakmor +9
We explore the chemodynamical properties of a sample of barred galaxies in the Auriga magneto-hydrodynamical cosmological zoom-in simulations, which form boxy/peanut (b/p) bulges,…
Dancing in the void: hydrodynamical N-body simulations of the extremely metal poor galaxy DDO 68
R. Pascale, F. Annibali, M. Tosi +7
Using hydrodynamical -body simulations, we show that the observed structure and kinematics of the extremely metal-poor, dwarf irregular galaxy DDO 68 is compatible with a merger…
Beyond the surface: hydrodynamical N-body simulations of the interacting dwarf galaxies NGC 5238 and UGC 8760
R. Pascale, F. Annibali, M. Tosi +6
From deep imaging data obtained with the Large Binocular Telescope as part of the Smallest Scale of Hierarchy Survey (SSH), we have discovered low-surface brightness tidal features…