tests:collision:mock_data:challenge_4
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tests:collision:mock_data:challenge_4 [2017/03/18 15:44] – v.henault-brunet | tests:collision:mock_data:challenge_4 [2022/10/24 12:28] (current) – external edit 127.0.0.1 | ||
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- | The mock data is a snapshots of large $N$-body simulation of the globular cluster M4 are [[http:// | + | The mock data is a snapshots of large N-body simulation of the globular cluster M4 are [[http:// |
- | We selected the snapshot at t = 12023.9 Myr and assume that radial/LOS velocities are available for all stars brighter than V=15 (N=1143). A distance modulus of 11.35 mag was adopted (i.e. D=1862.1 pc). The cluster properties are: | + | We selected the snapshot at t = 12023.9 Myr. A distance modulus of 11.35 mag was adopted (i.e. D=1862.1 pc). The cluster properties are: |
- Mtot = 69144.5 M_sun | - Mtot = 69144.5 M_sun | ||
- L_V = 35547.1 L_V_sun | - L_V = 35547.1 L_V_sun | ||
Line 20: | Line 20: | ||
We do the comparison in 3 steps: | We do the comparison in 3 steps: | ||
- | - Surface brightness profile + RVs | + | - Step 1: Surface brightness profile + RVs |
- | - Surface brightness profile + RVs + PMs | + | - Step 2: Surface brightness profile + RVs + PMs (' |
- | - Surface brightness profile + RVs + PMs + Gaia | + | - Step 3: Surface brightness profile + RVs + PMs (' |
+ | (+ local mass function for methods allowing it). | ||
- | The data for the 3 fitting steps : | + | ** DOWNLOAD NEW M4 MOCK DATA (updated 21/ |
- | - Step 1: | + | |
- | - Surface brightness: {{:data:M4_sb.dat.gz}} | + | |
- | - Discrete LOS velocities: {{: | + | |
- | - LOS velocity dispersion profile: {{: | + | |
- | - Step 2: | + | |
- | - Discrete proper motions: {{: | + | |
- | - Proper motion dispersion profiles: {{: | + | |
- | - Step 3: | + | |
- | - Gaia proper motions: | + | |
- | - Gaia proper motion dispersion profiles: | + | |
+ | Included are the surface brightness profile, line-of-sight dispersion profile and discrete velocities for RGB stars, HST-like PM dispersion profiles and discrete velocities, Gaia-like (end-of-mission) PM dispersion profiles and discrete velocities (for M4, bulge and halo-like backgrounds), | ||
- | For methods that allow it, you can also use constraints from a mock observed mass function at a projected radius of 300 arcseconds from the centre: {{: | ||
- | A number density profile for stars brighter than the main-sequence turnoff (V < 17 mag; corresponding to a turnoff mass of 0.82 solar masses) is also available ({{: | ||
- | |||
- | |||
- | The mass profile in projection and the $M/L_V$ ratio in projection can be found here: | ||
- | - {{: |
tests/collision/mock_data/challenge_4.1489851881.txt.gz · Last modified: 2022/10/24 12:28 (external edit)