Gaia early DR3 Mock Catalogue (gedr3mock)gedr3mock.maglimivo://org.gavo.dc/gedr3mock/q/maglim_5doi:10.21938/dBrplG8I1KR7RyfkMXTyYAThe GAVO DC teamRybizki, J.Demleitner, M.Bailer-Jones, C.Tio, P. D.Cantat-Gaudin, T.Fouesneau, M.Chen, Y.Andrae, R.Girardi, L.Sharma, S.2020-11-25T08:41:00ZGAVO Data Center TeamMönchhofstrasse 12-14, D-69120 Heidelberggavo@ari.uni-heidelberg.de++49 6221 54 1837astrostatistics-techniquesmilky-way-galaxyastronomical-simulations
This table gives empirical magnitude limits for
G and BP bands derived from Gaia DR2 with G < 20.7 mag for HEALPixels
of 5 (scale roughly ~2 degrees). For each band
we have 4 different variants:
(1) no additional condition,
(2) parallax available,
(3) BP-RP available,
(4) parallax and BP-RP available.
For BP mag limits we also require that BP is available. The magnitude
limits are approximated by the mode of the magnitude distribution in a
specific HEALpix. Since this mode estimator is prone to Poisson noise
in low density areas we report the magnitude limits in two flavours:
(a) directly the mode estimator
(b) the same as the mode estimator,
except that in healpixel with a stellar density below 1e5 sources per
square degree the limit is arbitrarily set to 20.7 mag. These magnitude
limits were created using the `gdr2_completeness package`_ and users
are encouraged to create custom-made magnitude limits with specific
conditions, e.g. RVS sample with good parallaxes.
.. _gdr2_completeness package: https://github.com/jan-rybizki/gdr2_completenesshttps://dc.zah.uni-heidelberg.de/tableinfo/gedr3mock.maglim_5SimulationResearchOpticalInfraredgedr3mockGaia early DR3 Mock Catalogue (gedr3mock) This catalogue is a simulation of the Gaia EDR3 stellar content using
Galaxia (a tool to sample stars from a Besancon-like Milky Way model),
3d dust extinction maps and the latest PARSEC Isochrones. It is
mimicking the Gaia DR2 data model and an apparent magnitude limit of
G=20,7. Extinctions and photometry in different bands have also been
included in a supplementary table as well as uncertainty estimates
using scaled GDR2 errors. Additional magnitude limit per HEALpix maps
are provided, based on the mode in the magnitude distribution of Gaia
DR2 data.
gedr3mock.maglim_5
This table gives empirical magnitude limits for
G and BP bands derived from Gaia DR2 with G < 20.7 mag for HEALPixels
of 5 (scale roughly ~2 degrees). For each band
we have 4 different variants:
(1) no additional condition,
(2) parallax available,
(3) BP-RP available,
(4) parallax and BP-RP available.
For BP mag limits we also require that BP is available. The magnitude
limits are approximated by the mode of the magnitude distribution in a
specific HEALpix. Since this mode estimator is prone to Poisson noise
in low density areas we report the magnitude limits in two flavours:
(a) directly the mode estimator
(b) the same as the mode estimator,
except that in healpixel with a stellar density below 1e5 sources per
square degree the limit is arbitrarily set to 20.7 mag. These magnitude
limits were created using the `gdr2_completeness package`_ and users
are encouraged to create custom-made magnitude limits with specific
conditions, e.g. RVS sample with good parallaxes.
.. _gdr2_completeness package: https://github.com/jan-rybizki/gdr2_completeness12288hpxLevel 5 HEALPix for which the magnitude limit applies.pos.healpixintindexedmaglim_gThe mode of the G magnitude distribution in the respective HEALPixmaginstr.sensitivityfloatnullablestarcount_gThe number of stars in the respective HEALPix bin with G<20.7meta.numberintmaglim_g_density_thresholdThe mode of the G magnitude distribution in the respective HEALPix. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_g_parallaxThe mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax measurementmaginstr.sensitivityfloatnullablestarcount_g_parallaxThe number of stars in the respective HEALPix bin with G<20.7 and parallax measurementmeta.numberintmaglim_g_parallax_density_thresholdThe mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_g_colorThe mode of the G magnitude distribution in the respective HEALPix when also requiring a BP and RP measurementmaginstr.sensitivityfloatnullablestarcount_g_colorThe number of stars in the respective HEALPix bin with G<20.7 and BP and RP measurementmeta.numberintmaglim_g_color_density_thresholdThe mode of the G magnitude distribution in the respective HEALPix when also requiring a BP and RP measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_g_parallax_colorThe mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurementmaginstr.sensitivityfloatnullablestarcount_g_parallax_colorThe number of stars in the respective HEALPix bin with G<20.7 and parallax and BP and RP measurementmeta.numberintmaglim_g_parallax_color_density_thresholdThe mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_bpThe mode of the BP magnitude distribution in the respective HEALPixmaginstr.sensitivityfloatnullablestarcount_bpThe number of stars in the respective HEALPix bin with G<20.7meta.numberintmaglim_bp_density_thresholdThe mode of the BP magnitude distribution in the respective HEALPix. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_bp_parallaxThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax measurementmaginstr.sensitivityfloatnullablestarcount_bp_parallaxThe number of stars in the respective HEALPix bin with G<20.7 and parallax measurementmeta.numberintmaglim_bp_parallax_density_thresholdThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_bp_colorThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a BP and RP measurementmaginstr.sensitivityfloatnullablestarcount_bp_colorThe number of stars in the respective HEALPix bin with G<20.7 and BP and RP measurementmeta.numberintmaglim_bp_color_density_thresholdThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a BP and RP measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullablemaglim_bp_parallax_colorThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurementmaginstr.sensitivityfloatnullablestarcount_bp_parallax_colorThe number of stars in the respective HEALPix bin with G<20.7 and parallax and BP and RP measurementmeta.numberintmaglim_bp_parallax_color_density_thresholdThe mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurement. In HEALPixes with less than 1e5 stars per square degree the limit is set to 20.7 mag. This should reduce the noise of the mode estimator due to Poisson noise in low density areas.maginstr.sensitivityfloatnullable