Partecipanti: Marta Volonteri (IAP, Paris, FR)
Abstract
Massive black holes have been detected in many nearby galaxies. Their masses scale with several properties of the host galaxies, suggesting a correlation, and a coevolution, among black holes and galaxies. I will first discuss how gas accretion and black hole mergers shape this co-evolution at different galaxy and black hole masses. I'll then consider the relation (or lack thereof) between black hole accretion rate (BHAR) and the star formation rate (SFR) in the galaxy. In principle, the almost linear correlation between black holes mass and bulge/galaxy mass suggests parallel growth. Observationally, however, show different results on how BHAR compares to SFR: samples of AGN show no correlation, or at least a large scatter, between the mean BHAR and the mean SFR; samples of galaxies seem instead to find that they scale with each other. I will present the analysis of some simulations where the different aspects are analyzed, and seem to reconcile the different views.
See you on thursday in Aula della Specola, via Zamboni 33, on time at 14h
Next seminars:
- Thursday November 5th, at 14:00 TBD
- Thursday November 12th, at 14:00 Sebastian Kamann (Institut fuer Astrophysik, Universitaet Goettingen, DE)
- Tuesday November 17th, at 14:00 Young-Wook Lee (Center for Galaxy Evolution Research & Department of Astronomy, Yonsei University, Seoul, Korea)
- Thursday November 19th, at 14:00 Matteo Guainazzi (Astro-H ESA Science Operation Center & Astro-H JAXA Operation Office)
- Thursday November 26th, at 14:00 TBD
The complete list of seminars is available at: http://davide2.bo.astro.it/?page_id=4531
The organizers of seminars: