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This table contains stars and their associated properties from the mock catalogue.
Each star has a set of positions and velocities specified relative to the galactic centre,
and relative to an observer placed at a position similar to that of the Sun's
in the Milky Way. This observer has been placed on the x-axis at r = (x,y,z) = (8,0,0) kpc,
with a velocity (U,V,W) = (11, 12 + 220, 7) km/s, (v_x, v_y, v_z) = (-11, -232, 7) km/s.
| column | type | unit | description |
|---|
| ID |
long |
|
ID of the star, unique within the mock catalogue
|
| x |
float |
kpc |
x-component position, relative to halo centre
|
| y |
float |
kpc |
y-component position, relative to halo centre
|
| z |
float |
kpc |
z-component position, relative to halo centre
|
| v_x |
float |
km/s |
x-component velocity, relative to halo rest frame
|
| v_y |
float |
km/s |
y-component velocity, relative to halo rest frame
|
| v_z |
float |
km/s |
z-component velocity, relative to halo rest frame
|
| l |
float |
degrees |
Galactic longitude relative to Sun
|
| b |
float |
degrees |
Galactic latitude relative to Sun
|
| r |
float |
kpc |
Distance from Sun
|
| v_r |
float |
km/s |
Radial velocity relative to Sun
|
| v_theta |
float |
km/s |
Tangential velocity relative to Sun
|
| age |
float |
log10(yr) |
Age of the star expressed as log10(years)
|
| metallicity |
float |
Gyr |
Fraction of star mass in metals
|
| mass |
float |
Msun |
Current mass of star
|
| logg |
float |
|
Surface gravity of the star
|
| logTe |
float |
|
Effective temperature of the star
|
| type |
int |
|
The type of star based on its current evolutionary stage of the PARSEC isochrone.
(0=Pre-MS, 1=Main sequence, 2=Subgiant branch, 3=Red giant branch,
4,5,6=stages of core He burning, 7,8=stages of Asymptotic giant branch)
|
| absmag_u |
float |
|
Absolute rest frame u band (SDSS) magnitude of the star.
|
| absmag_g |
float |
|
Absolute rest frame g band (SDSS) magnitude of the star.
|
| absmag_r |
float |
|
Absolute rest frame r band (SDSS) magnitude of the star.
|
| absmag_i |
float |
|
Absolute rest frame i band (SDSS) magnitude of the star.
|
| absmag_z |
float |
|
Absolute rest frame z band (SDSS) magnitude of the star.
|
| appmag_u |
float |
|
Apparent u band (SDSS) magnitude of the star as seen from the Sun.
|
| appmag_g |
float |
|
Apparent g band (SDSS) magnitude of the star as seen from the Sun.
|
| appmag_r |
float |
|
Apparent r band (SDSS) magnitude of the star as seen from the Sun.
|
| appmag_i |
float |
|
Apparent i band (SDSS) magnitude of the star as seen from the Sun.
|
| appmag_z |
float |
|
Apparent z band (SDSS) magnitude of the star as seen from the Sun.
|
| subhaloID |
long |
|
ID of subhalo to which the dark matter particle this star was spawned from, is a member of. -1 means it
is not currently a member of any subhalo, 0 means it is part of the main halo.
|
| TreeID |
long |
|
The subhalo tree that this star came from. All stars that arrive in the main halo via
the same satellite have the same TreeID.
|
| infRedshift |
float |
|
Accretion redshift of the subhalo this star once belonged to,
defined as the redshift at which the satellite reaches its maximum mass.
|
| dmID |
long |
|
ID of associated dark matter particle.
|
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