This package helps with
[1] querying GaiaDR2 TAP services in chunks of healpixel
[2] assembling approximate completeness maps per healpixel and G magnitude bin
For example for GaiaDR2 extinction extimates were delivered down to G=17. This is an all-sky map in Galactic coordinates showing the completeness of all sources with extinction estimate compared to all sources down to 17th Gmag.
[3] Downloading data to assess the magnitude limits per healpix
[4] Calculating the magnitude limits of Gaia per healpix for different bands
The all-sky G magnitude limit of GaiaDR2 sources that have BP and RP color. These maps are saved in 'data/maglim_X_in_nside128.npy' for G, BP and RP magnitude limits for healpix level 7 ordered by healpix. Or you can generate them yourself with notebook [3] and [4].
[5] Querying the GDR2 RVS selection function
[6] Estimating the average number of sources from the second telescope
The all-sky completeness of the GDR2_RVS sample with respect to all sources in GDR2 for G = 12.5 mag and GRP = 12.0 mag (corresponding to GRVS = 11.8 mag) as returned by our python function.
For more details on the RVS sample selection function please have a look at our paper and you can also check out my GalaxyCoffee talk slides.
The jupyter tutorials illustrate the basic usage of this software. It can be inspected in the github repository or you can run it interactively on your local machine.
pip install git+https://github.com/jan-rybizki/gdr2_completeness.git
it has a few dependencies (healpy, pyvo) and was only tested using python 3
- Jan Rybizki (MPIA, [email protected])
- Ronald Drimmel (INAF)
- Josep Manel Carrasco (University of Barcelona)
If you use sofwares in the example tutorials [1] & [2] (first release) please cite ASCL-cite. If you use software in the example tutorials [3] & [4] (v1.0) please cite GeDR3mock paper. If you use software in the example tutorials [5] & [6] (v2.0) please cite GDR2 selection function.
The package is licensed under the Creative Commons Attribution-ShareAlike 4.0 International.