tests:collision:mock_data:challenge_4
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tests:collision:mock_data:challenge_4 [2016/12/16 14:42] – 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: |
- | - $M = 69144.5\, | + | - Mtot = 69144.5 |
- | - $L_{V} | + | - L_V = 35547.1 |
- | - $M/L_V=1.95$ | + | - M/L_V = 1.95 Msun/ |
- | - $r_{\rm h} = 3.14\, | + | - <m> = 0.495 Msun |
+ | - r_h = 3.14 pc | ||
+ | - r_eff = 1.43 pc | ||
+ | - N neutron stars = 130 | ||
+ | - N black holes = 2 | ||
+ | - Mass in remnants = 27176.4 Msun | ||
- | We do the comparison in 3 steps: | ||
- | - Surface brightness profile + RVs | ||
- | - Surface brightness profile + RVs + PMs | ||
- | - Surface brightness profile + RVs + PMs + Gaia | ||
- | The data for the 3 fitting | + | We do the comparison in 3 steps: |
- | - Step 1: | + | - Step 1: Surface brightness profile |
- | - Surface brightness: {{: | + | - Step 2: Surface brightness profile + RVs + PMs (' |
- | - Discrete LOS velocities: {{: | + | - Step 3: Surface brightness profile + RVs + PMs (' |
- | - LOS velocity dispersion | + | (+ local mass function for methods allowing it). |
- | - Step 2: | + | |
- | - Discrete proper motions: {{: | + | |
- | - Proper motion dispersion profiles: {{: | + | |
- | For methods that allow it, you can also use constraints from a mock observed mass function at a projected radius | + | ** DOWNLOAD NEW M4 MOCK DATA (updated 21/ |
- | A number density | + | Included are the surface brightness profile, line-of-sight dispersion |
- | The mass profile in projection and the $M/L_V$ ratio in projection can be found here: | ||
- | - {{: |
tests/collision/mock_data/challenge_4.1481899337.txt.gz · Last modified: 2022/10/24 12:28 (external edit)