Studying the gas around galaxies with the Multi Unit Spectroscopic Explorer and hydrodynamical simulations


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 Nazionalità Coordinatore Netherlands [NL]
 Totale costo 1˙496˙400 €
 EC contributo 1˙496˙400 €
 Programma FP7-IDEAS-ERC
Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call ERC-2011-StG_20101014
 Funding Scheme ERC-SG
 Anno di inizio 2012
 Periodo (anno-mese-giorno) 2012-09-01   -   2017-08-31


# participant  country  role  EC contrib. [€] 

 Organization address address: RAPENBURG 70
city: LEIDEN
postcode: 2300 RA

contact info
Titolo: Dr.
Nome: Joop
Cognome: Schaye
Email: send email
Telefono: 31715278443
Fax: 31715275743

NL (LEIDEN) hostInstitution 1˙496˙400.00

 Organization address address: RAPENBURG 70
city: LEIDEN
postcode: 2300 RA

contact info
Titolo: Mr.
Nome: Tonnis
Cognome: Brouwer
Email: send email
Telefono: 31715273149
Fax: 31715275269

NL (LEIDEN) hostInstitution 1˙496˙400.00


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

lines    runs    guide    bright    alpha    magnitude    us       physics    qsos    cgm    cosmological    absorption    ly    asymp    muse    guaranteed    gas    simulations    metal    hours    resolution    deep    galaxies    time    emission    carry    we    absorbers   

 Obiettivo del progetto (Objective)

'Gas accretion and galactic winds are two of the most important and poorly understood ingredients of models for the formation and evolution of galaxies. We propose to take advantage of two unique opportunities to embark on a multi-disciplinary program to advance our understanding of the circumgalactic medium (CGM).

We will use MUSE, a massive optical integral field spectrograph that we helped to develop and that will be commissioned on the VLT in 2012, to study the CGM in both absorption and emission. We will use 200 hours of guaranteed time to carry out deep redshift surveys of fields centred on bright z≈3.5 and z≈5 QSOs. This will yield hundreds of faint galaxies (mainly Lyα emitters) within 250 kpc of the lines of sight to the background QSOs, an order of magnitude increase compared to the best existing sample (bright, z≈2.3 galaxies). This will allow us to map the CGM in absorption in 3-D using HI and metal lines and to identify, for the first time, the counterparts to most metal absorbers. MUSE will also enable us to detect Lyα emission from the denser CGM (also using another 300 hours of guaranteed time targeting deep HST fields) and thus to directly explore its connection with galaxies and QSO absorbers.

We will use the new supercomputer of the Virgo consortium to carry out cosmological hydro simulations that contain 1-2 orders of magnitude more resolution elements than the largest existing (spatially adaptive) runs. We will use the results of our previous work to guide our choice of parameters in order to obtain a better match to the observed mass function of galaxies. In parallel, we will carry out a complementary program of zoomed simulations of individual galaxies. These will have the physics and resolution to include a cold gas phase and hence to bypass much of the 'subgrid' physics used in the cosmological runs. Both types of simulations will be used to study the physics of gas flows around galaxies and to guide the interpretation of our observations.'

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