INAF - Astronomical Observatory of Padova

INAF - Astronomical Observatory of Padova is one of the main structures of the National Institute of Astrophysics (INAF). The main activity of the Observatory is to perform scientific research in various  fields of Astrophysics. The Observatory also contributes to  advanced education, assists in the dissemination of knowledge and implements project of education and outreach of Astronomy.

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INAF - Osservatorio Astronomico di Padova

Event 

Title:
Seminario Dr. Matteo Bianconi
When:
14.02.2019 - 14.02.2019
Where:
Sala jappelli - Osservatorio Astronomico di Padova - Padova
Category:
Seminario

Description

Seminars

Giovedi 14 Febbraio 2019, h. 11:30 
 Aula Jappelli Osservatorio Astronomico

Matteo Bianconi 

   School of Physics and Astronomy University of Birmingham
 
 

 LoCuSS: Galaxy properties in and around massive clusters at z=0.2

 

Abstract

Galaxy cluster evolution is driven by accretion, in the form of both baryonic and non-baryonic matter, of smooth continuous streams of small haloes, together with episodic merging of more massive systems. Given that clusters double their mass below z∼0.5, the LoCuSS survey provides the ideal dataset to study how accretion shapes clusters and their galaxy members. In particular, LoCuSS clusters have excellent data coverage in both wavelength and area, the latter of which includes infalling regions. I will present direct evidences of pre-processing in a population of newly discovered infalling groups, caught at their first encounter with the cluster environment. Star formation quenching appears effective in galaxies already prior to them settling in the cluster potential, and groups are favourable locations for this process. The fraction of star-forming galaxies in groups is compatible with cluster cores, suggesting that groups populate clusters with passive galaxies. Additionally, I will show a new study targeting dust consumption in cluster galaxies and its dependence with respect to the cluster dynamical state.

Venue

Venue:
Sala jappelli - Osservatorio Astronomico di Padova
Street:
vicolo Osservatorio 5
ZIP:
35122
City:
Padova

Description

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