extragalactic astrophysics and cosmology group


The work in our group is quite diverse, covering several lines of research, but a common ground to all is the study of the origin and evolution of the Universe and its constituents through the distribution of large scale structure. Our interests range from galaxy formation to the growth of structure to cosmic acceleration, including work on weak lensing shear and magnification, galaxy cross-correlations, the cosmic microwave background (CMB), perturbation theory, N-body simulations, synthetic galaxy catalogues, and more.

Observational Cosmology.

Our group is currently involved in some of the most exciting extra-galactic surveys ongoing or planned for the near future: the Dark Energy Survey (DES), scanning galaxies over 5000 sq deg of the northern sky since 2013 with one of largest cameras ever built; the Physics of the Accelerating Universe (PAU), which will use a novel system of narrow band filters to pin down galaxy positions with very good precision and support a wealth of science related also to galaxy formation; the ESA Euclid satellite, which will raise the bar in our understanding of cosmology and cosmic acceleration to new standards. Some of our team members also collaborate in Planck, currently measuring the cosmic microwave background with a sensitivity never achieved before. In all these collaborations we have taken lead roles, not only at the scientific level but also in data management, infrastructure, and instrumentation.

Numerical Simulations

Over the past several years our group has produced the MICE simulations, some of the largest numerical simulations of cosmological structure formation to date. Our analyses of the MICE simulations not only serves the goals of the aforementioned surveys but also helps us develop and test current theories of nonlinear growth, cosmic acceleration, galaxy formation, weak lensing, etc. Lately we have also developed expertise in producing image simulations to test and improve the data reduction pipelines of DES, PAU and Euclid.

Theoretical Cosmology

Over the years our team members have contributed to the theoretical understanding of various problems in cosmology such as nonlinear gravitational collapse, galaxy biasing and galaxy formation, higher-order statistics, baryon acoustic oscillations. This work, which continues today, merges nicely with our observational and numerical expertise.

For more info, visit the project webpages:


Ricard Casas

Francisco Javier Castander

Martin Crocce

Pablo Fosalba

Enrique Gaztañaga

Martin Folger

Santiago Serrano

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How to reach Barcelona

The most convenient way to reach Barcelona is by air. Barcelona airport ("El Prat" - BCN) is served by two international terminals. Most flights are handled in Terminal 1, which is the new terminal.

The airport is located 15 kilometres outside the city, to the south-west. Most European airlines, and many international ones, operate flights from its international terminal.

From the Airport to Barcelona centre

There are several ways to go from the airport to Barcelona:

BUS: Aerobus are buses from both Terminal 1&2 to Plaça Catalunya. They leave every 5-10 minutes and cost 5,90€ a single ticket and 10.20€ the return ticket. You can find all the information here. It is easy and definitely, the most economic choice.
If you are going to the city center, your stop is Plaça Catalunya:

TAXI: It should cost approx 30-40 € to get to central locations in Barcelona coming from the airport. It is not a long ride. If there is no traffic, it is quick (~30 min). In rush hour it can take longer (~1 hour). Some taxis accept payments with credit card (look for VISA/MasterCard signs in the car).


Depending on the time you visit Barcelona, the availability and price of hotels may vary significantly.
We recommend to always check for offers and suggestions here.

Find here some of our recommendations:

Barcelona Downtown
CSIC's residence
Central and in a touristic. A bit noisy...
Close to Pl. Catalunya FGC station (to come to Universitat Autònoma where ICE-IEEC is) and Aerobus (to go to the Airport)

Barcelona Off-Center
Hotel Via Augusta
Nice and residential area with restaurants and bars.
Close to Gràcia FGC station (to come to Universitat Autònoma)

Universitat Autònoma de Barcelona (UAB)
Hotel Campus
Located outside Barcelona inside UAB Campus. 15-minute walk from ICE-IEEC.
A good choice if you don't expect to do anything else but work...


Our institute is located at Universitat Autònoma de Barcelona (UAB) Campus:

Campus UAB
Facultat de Ciències Torre C5 - Parell (even) - 2nd floor
Phone: +34 93 581 43 52



To come to UAB from the city centre you should use the FGC trains departing from Plaza Catalunya towards Sabadell [S2]. Get off at the Universitat Autònoma station (one after Bellaterra).

You could also get S55 where Universitat Autònoma is last stop (be careful not to confuse with S5 that does not stop in UAB!)



ICE-IEEC Extragalactic Astrophysics and Cosmology Group