Francesco Calura INAF/O. A. Bologna

Pagel, B., 2002, ASPC, 253, 509

How do galaxies form? When do the stellar populations of their

sub-components form? What are the principal

feedback/quenching mechanisms? Scaling relations of ETG: can they be

reproduced w/in LCDM?

(FC & Menci, 2011, MNRAS, 413, L1)

(FC & Menci, 2011, MNRAS, 413, L1)

Obs.Slope=0.38

ModelSlope=-0.02

(FC & Menci, 2011, MNRAS, 413, L1)

Obs.Slope=0.38

ModelSlope=0.03

(FC & Menci, 2011, MNRAS, 413, L1)

Obs.Slope=0.38

ModelSlope=0.11

(FC & Menci, 2011, MNRAS, 413, L1)

Obs.Slope=0.38

ModelSlope=0.21

What is the chronology of the Hubble sequence? (And role of Main Sequence galaxies)

What have we learned (and what can we really learn ever) from numerical simulations and SAMs?

‘Unsatisfied Observers’ (S. Lilly)

+Frustrated theoreticians

=

Lack of trust in ‘physical’ (i.e. fully cosmological) models

Use of ‘Simple’ (i.e. analytical) models to describe galaxy evolution

Lilly et al. 2013

Spheroids (at z>2) Discs (at z<2)

Fig. from Pipino et al., 2013, MNRAS, 432, 2541

How do galaxies form? When do the stellar populations of their sub-

components form? What are the principal feedback/quenching

mechanisms? Scaling relations of ETG: can they be reproduced

w/in LCDM? What is the chronology of the Hubble sequence?

(And role of Main Sequence galaxies) What have we learned (and what can we really

learn ever) from numerical simulations and SAMs?

How do metals escape from galaxies (ram pressure, winds…driven by which mechanism (Sne and/or AGN)

Is ICM typical of IGM (as traced by Lya-forest) in general?

Does either the metallicity or abundance pattern vary with z?