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Chasing the observational signatures of seed black holes at z > 7: candidate statistics
Rosa Valiante, Raffaella Schneider, Luca Graziani +1
Supermassive black holes (SMBHs) of 10^9-10^10 Msun were already in place ~13 Gyr ago, at z>6. Super-Eddington growth of low-mass BH seeds (~100 Msun) or less extreme accretion ont…
Where does galactic dust come from?
Michele Ginolfi, Luca Graziani, Raffaella Schneider +5
Here we investigate the origin of the dust mass (Mdust) observed in the Milky Way (MW) and of dust scaling relations found in a sample of local galaxies from the DGS and KINGFISH s…
The sustainable growth of the first black holes
Edwige Pezzulli, Marta Volonteri, Raffaella Schneider +1
Super-Eddington accretion has been suggested as a possible formation pathway of supermassive black holes (SMBHs) 800 Myr after the Big Bang. However, stellar feed…
The WISSH quasars Project: II. Giant star nurseries in hyper-luminous quasars
F. Duras, A. Bongiorno, E. Piconcelli +12
Studying the coupling between the energy output produced by the central quasar and the host galaxy is fundamental to fully understand galaxy evolution. Quasar feedback is indeed su…
On the formation of the first quasars
Rosa Valiante, Bhaskar Agarwal, Melanie Habouzit +1
Observations of the most luminous quasars at redshift z>6 reveal the existence of numerous supermasssive black holes (>10^9 Msun) already in place about twelve billion years ago. I…
AGB and SAGB stars: modelling dust production at solar metallicity
F. Dell'Agli, D. A. García-Hernádez, R. Schneider +5
We present dust yields for asymptotic giant branch (AGB) and super--asymptotic giant branch (SAGB) stars of solar metallicity. Stars with initial mass $1.5~M_{\odot} \leq M_{\rm in…