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Table of Contents
Discs and Extinction Map
These mock data are designed to mimic the Milky Way disc - either locally or globally. Key questions include, for the local problem:
(1) What quality of data are required to determine the local dark matter density? (2) Do multiple populations (e.g. split by abundance/age) help? (3) Is 1D modelling sufficient?
And for the global problem:
(1) Can global models simultaneously recover the disc phase space distribution function and the gravitational potential? (2) What are the key degeneracies in the problem and how can these be broken?
If posting new tests, please try to approximately follow the template set out for the “spherical collisionless tests” here.
Key working group coordinator: Daisuke Kawata
Challenges
Hunt & Kawata challenges for 2015
Can you recover V_LSR=218.4 km/s and (U,V,W)=(11,12,7) km/s from:
- An axisymmetric disc galaxy without extinction or error?
- The same galaxy with dust extinction added?
- The same galaxy with dust extinction and Gaia like errors added?
| Model | <latex>N</latex> | Data file |
|---|---|---|
| Full data | 5,999,999 | 1.dat.gz |
| With extinction | 2,372,335 | 2.dat.gz |
| With extinction & error | 2,372,335 | 3.dat.gz |
All in the format: alpha, delta, parallax, mu-alpha, mu-delta, radial velocity, x, y, z, vx, vy, vz, mass, V, V-I.
The observer is assumed at (-8,0) kpc
SNAPDRAGONS tutorial
Find here the resources for the SNAPDRAGONS tutorial on Wednesday 16:30-17:30,
If you're interested in following along with the example please download in advance
Zipped SNAPDRAGONS source code and example input file snapdragons.tar.gz
Gaia errors code June 2015
The code has been updated to compute the astrometric and photometric errors for a fraction of the operation data.