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GREAT ESF Workshop:

Galaxy Modelling with a Gaia mock catalogue

Second WGA1 Workshop @ Universitat de Barcelona, Spain (29 February - 2 March 2012)

Important Dates

15 January 2012: Registration close.

29 February 2012: Workshop starts.


The Gaia launch day is around the corner. We are excited by the unprecedented accuracy and amount of the data that Gaia will provide us. Furthermore, the ground-based chemodynamical spectroscopy survey projects progress strongly and will add more values to the Gaia data. To extract the maximum useful information about Galaxy dynamics and formation from the enormous data set, the generation and elaboration of theoretical models are crucial. A question is: ”are we ready?”

Gaia will produce the unprecedentedly large amount of the data for order of billion stars with many dimensions of information. The accuracy of the information of each dimension could be fairly inhomogeneous, depending on distance, population, location in the sky due to the dust extinction, crowding and so on, i.e. there will be a complicated observational ”selection function”. On the other hand, theoretical models are never like the real Galaxy, and some simplification and/or coarse sampling are always applied. To quantitatively compare such theoretical models with the upcoming Gaia data, we need to be well prepared and exercises with a Gaia mock catalogue will be crucial for the theorists.

The workshop will discuss how we would like to access and use the Gaia catalogue for Galaxy modelling. We invite 3 types of participants (some may work for both A and B);

A. Modellers who wants to generate a Gaia mock catalogue from their simulations, e.g. N-body simulations, semi-analytic models. A. Modellers who wants to compare their Galaxy model to the Gaia data, i.e. establish a tool to statistically analyse Gaia (mock) data, e.g. dynamical modelling (torus model, made-to-measure), number-count models. A. Experts of the contents and accuracies of the Gaia data, mock catalogue, dust, stellar populations, e.g. DPAC-CU1, CU2, GAP, Besançon Galaxy model.

The aim of this workshop is to stimulate discussion and establish collaboration among these participants. The expected outcome of this workshop are:

* establishing a close link between Galaxy modelling community to the DPAC teams. * addressing the challenge of generating and using the Gaia catalogue. * providing input and feedback, including the use cases of the Gaia (mock) catalogue, from the Gaia modelling community to the DPAC teams. * setting the tasks for the participants to work on for the next workshop.

Participants A and B are expected to give a short talk about how they want to use a Gaia Mock Catalogue. There is a free discussion afternoon on the 2nd day (1st March). On the 3rd day (2nd March) participants A and B are asked to give a short presentation what they discussed in the free discussion session. We also encourage PhD student to attend and they do not have to give a presentation, but can join free discussion actively.

Schedule (subject to change)

  Speaker Title Slide
29 February      
1pm-5pm Session 1 How we want to use a Gaia Mock Catalogue  
  Participants A and B. very short presentations  
1 March      
9:30am-10am cont. Session 1    
10:15am-12:30pm Session 2 'What we will see'  
  Participants C    
12:30pm-1:30pm Lunch    
1:30pm-5:30pm Session 3 Free discussion.  
    Participants discuss what are challenges of generating and using a Gala mock catalogue for their science with the other participants.  
2 March      
9:30am-12:30pm Session 4 What we need to do to be ready for Gaia.  
  All the speaker of Session 1    
12:30pm-1:30pm Lunch    
1:30pm-3pm cont. Session 4    


(The number of participants is limited to ~40)
Name Institute Interests Lunch Dinner
      29 1 2 29
Daisuke Kawata MSSL,UCL,UK Generating Gaia Mock catalogue from N-body simulations. Spiral Structures, pattern speed and stellar motion around spiral arms. x x x x
Francesca Figueras UB (Spain) Kinematic tracers from Spiral Structure models x x x x
Mercè Romero-Gómez UB (Spain) Bar and Spiral Structure models x x x x
Luis Aguilar UB , UNAM   x x x x
Teresa Antoja Kapteyn (Netherlands)   x x x x
Joao Alves University of Vienna Data visualization. 3D modeling of the local ISM x x x x
Andre Moitinho SIM - U. Lisbon Type C participant. I'm interested in the selection of star clusters; Spiral arms; optically revealed star forming regions (Large scale star formation) x x x x
Coryn Bailer-Jones MPIA, Heidelberg Modelling Gaia data using Bayesian methods (i.e. as participant type B); overview of the expected results/accuracies on the astrophysical parameters from CU8 (i.e. as participant type C). x x x x
Andreea Font University of Birmingham Generating Gaia mock catalogues from numerical simulations and comparisons with the data (groups A and B). x x x x
Robyn Sanderson Kapteyn Astronomical Institute (Netherlands) Constraining the dark matter distribution in the outer Galaxy with [mock] Gaia data (participant type B). x x x x


Teresa Antoja (Groningen), James Binney (Oxford), Anthony Brown (Leiden), Victor Debattista (UCLan), Francesca Figueras (Barcelona, LOC Chair), Andreea Font (Cambridge), Amina Helmi (Groningen), Daisuke Kawata (MSSL, UCL), Xavier Luri (Barcelona, LOC), Ivan Minchev (Potsdam), William O’Mullane (ESAC), Céline Reylé (Besançon)

Related Web Resources

Gaia Data Access: GaiaDataAccess


Please use the following form and send it to Lola Balaguer (gaiamock at am.ub.es) by '''15th January, 2012'''.

* Name: * Affiliation: * E-mail: * Lunch: 29th February (Y/N), 1st March: (Y/N), 2nd March: (Y/N) * Social dinner on 29th Feb.: (Y/N) * PhD student?: (Y/N) * Financial support: Air Fair (Y/N) (estimated costs: euro), Accommordation: (Y/N) (estimated costs: euro). * Your interests and/or What you want to do with Gaia Mock Catalogue:

Local Information

* The meeting will take place at the Fontseré Room in the 1st floor of the Faculty of Physics of the University of Barcelona. * Map of the area: bcn_1.jpg * Map of the University: z_univ.jpg * WGA1GaiaModel/WS2GaiaMock/Access * WGA1GaiaModel/WS2GaiaMock/Accommodation

WS2GaiaMock Web Utilities

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Topic revision: r7 - 2011-10-27 - LolaBalaguer
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