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Starburst-driven Mass Loss from Dwarf Galaxies: Efficiency and Metal Ejection
We model the effects of repeated supernova (SN) explosions from starbursts in dwarf galaxies on the interstellar medium of these galaxies, taking into account the gravitational potential of theirExpand
The fragmentation of pre-enriched primordial objects
Recent theoretical investigations have suggested that the formation of the very first stars, forming out of metal-free gas, was fundamentally different from the present-day case. The question thenExpand
Cosmological radiative transfer codes comparison project – I. The static density field tests
Radiative transfer (RT) simulations are now at the forefront of numerical astrophysics. They are becoming crucial for an increasing number of astrophysical and cosmological problems; at the same timeExpand
Dust-to-gas Ratio and Metal Abundance in Dwarf Galaxies
We have compared the metallicity (represented by oxygen abundance), and the dust-to-gas ratio, in a sample of dwarf galaxies. For dwarf irregulars (dIrrs) we find a good correlation between the twoExpand
ALMA constraints on the faint millimetre source number counts and their contribution to the cosmic infrared background
We have analysed 18 ALMA continuum maps in Bands 6 and 7, with rms down to 7.8 μJy, to derive differential number counts down to 60 μJy and 100 μJy at λ = 1.3 mm and λ = 1.1 mm, respectively.Expand
Evidence of strong quasar feedback in the early Universe
Most theoretical models invoke quasar driven outflows to que nch star formation in massive galaxies, and this feedback mechanism is required to account for the population of old and passive galaxiesExpand
Infrared background signatures of the first black holes
Angular fluctuations of the Near InfraRed Background (NIRB) intensity are observed up to scales $\simlt 1^{\ensuremath{^{\circ}}}$. Their interpretation is challenging as even after removing theExpand
Very extended cold gas, star formation and outflows in the halo of a bright QSO at z>6
Past observations of QSO host galaxies at z >6 have found cold gas and star formation on compact scales of a few kiloparsecs. We present new high sensitivity IRAM PdBI follow-up observations of theExpand
Signatures of X-rays in the early Universe
[abridged] With their long mean free paths and efficient heating of the intergalactic medium (IGM), X-rays could have a dramatic impact on the thermal and ionization history of the Universe. WeExpand
Massive black hole factories: Supermassive and quasi-star formation in primordial halos
Context. Supermassive stars and quasi-stars (massive stars with a central black hole) are both considered as potential progenitors for the formation of supermassive black holes. They are expected toExpand