Make a Mock Milky Way Survey

Model

Model to sample from:*

Disk flare and warp

Population*

Bar pattern speed*

km/s/kpc

Mass-to-clump ratio*

RCGs per M⊙

Nuclear star cluster mass P17a*

10⁹M⊙

Disk maximality*

Geometry

Survey Geometry*

Galactic longitude

deg

Galactic latitude

deg

Survey area

deg²

Sampling Factor*

For small areas set to 1 to produce a representative sample of stars.For large areas and deep surveys set this to a small number togenerate a random subsample reduced by this factor.

Your mock survey must have a maximum depth in a band you choose from your primary photometric system. To this you can add colour cuts and cuts in absolute magnitude. This allows you to focus your survey, for example, on giants or horizontal branch stars. All other survey selection functions (e.g. on parallax/proper motion) must be applied manually post catalogue generation.

Primary Photometric System*

This system contains the bands

Magnitude to filter on*

REQUIRED Note: the magnitude must exist in your primary photometric system

Minimum apparent magnitude

Maximum apparent magnitude*

REQUIRED. This should usually be the depth of your survey

Minimum absolute magnitude

Maximum absolute magnitude

Colour to filter on

e.g. J-Ks Note: both magnitudes must exist in your primary photometric system

Minimum Colour

Maximum Colour

Output Settings

Catalogue file format*

Add Astrometry Add columns with parallax and proper motions (in galactic coordinates)

Gaia Astrometric Errors Add columns with simulated Gaia DR2 astrometric errors. Scaled using the mission length.

Gaia Mission Length*

months

DR2 is 22 months of data, DR3 will be 34 months, the nominal mission is 60 months.

Additional photometric systems This will add magnitude columns additional to your primary photometric system. Control clock to select multiple systems.

Miscellaneous

Random seed

If empty the random number generators seed is chosen based on the time. If reproducibility is important for you then set the value here.

Maximum distance*

kpc

Note that without logging in you are limited to very small surveys, less than 20Mb in size. To increase this to 10Gb, you can log in or sign up in the top right corner of the page.