<?xml version='1.0'?><?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?><ri:Resource created="2019-12-01T13:08:00Z" status="active" updated="2024-02-06T08:59:18Z" version="1.2" xmlns:g-colstat="http://dc.g-vo.org/ColStats-1" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://dc.g-vo.org/ColStats-1 http://vo.ari.uni-heidelberg.de/docs/schemata/Colstats.xsd http://www.ivoa.net/xml/RegistryInterface/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/RegistryInterface.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogResource"><title>Gaia early DR3 Mock Catalogue (gedr3mock)</title><shortName>gedr3mock.maglim</shortName><identifier>ivo://org.gavo.dc/gedr3mock/q/maglim_7</identifier><altIdentifier>doi:10.21938/dBrplG8I1KR7RyfkMXTyYA</altIdentifier><curation><publisher>The GAVO DC team</publisher><creator><name>Rybizki, J.</name></creator><creator><name>Demleitner, M.</name></creator><creator><name>Bailer-Jones, C.</name></creator><creator><name>Tio, P. D.</name></creator><creator><name>Cantat-Gaudin, T.</name></creator><creator><name>Fouesneau, M.</name></creator><creator><name>Chen, Y.</name></creator><creator><name>Andrae, R.</name></creator><creator><name>Girardi, L.</name></creator><creator><name>Sharma, S.</name></creator><date role="Updated">2020-11-25T08:41:00Z</date><contact><name>GAVO Data Centre Team</name><address>Mönchhofstrasse 12-14, D-69120 Heidelberg</address><email>gavo@ari.uni-heidelberg.de</email><telephone>+49 6221 54 1837</telephone></contact></curation><content><subject>astrostatistics-techniques</subject><subject>milky-way-galaxy</subject><subject>astronomical-simulations</subject><description>
This table gives empirical magnitude limits for
G and BP bands derived from Gaia DR2 with G &lt; 20.7 mag for HEALPixels
of 7 (scale roughly ~0.5 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_completeness</description><source format="bibcode">2020PASP..132g4501R</source><referenceURL>http://dc.g-vo.org/tableinfo/gedr3mock.maglim_7</referenceURL><type>Simulation</type><contentLevel>Research</contentLevel></content><coverage><waveband>Optical</waveband><waveband>Infrared</waveband></coverage><tableset><schema><name>gedr3mock</name><title>Gaia early DR3 Mock Catalogue (gedr3mock)</title><description> 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.</description><table><name>gedr3mock.maglim_7</name><description>
This table gives empirical magnitude limits for
G and BP bands derived from Gaia DR2 with G &lt; 20.7 mag for HEALPixels
of 7 (scale roughly ~0.5 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_completeness</description><nrows>196608</nrows><column><name>hpx</name><description>Level 7 HEALPix for which the magnitude limit applies.</description><ucd>pos.healpix</ucd><stats><min>0</min><percentile03>5898.21</percentile03><median>98303.5</median><percentile97>190708.79</percentile97><max>196607</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType><flag>indexed</flag></column><column><name>maglim_g</name><description>The mode of the G magnitude distribution in the respective HEALPix</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.8</min><percentile03>19.7</percentile03><median>20.5</median><percentile97>20.6</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_g</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7</description><ucd>meta.number</ucd><stats><min>240</min><percentile03>440.0</percentile03><median>1678.5</median><percentile97>51103.79000000001</percentile97><max>238267</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_g_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.7</min><percentile03>20.6</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_g_parallax</name><description>The mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>15.1</min><percentile03>19.4</percentile03><median>20.4</median><percentile97>20.6</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_g_parallax</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and parallax measurement</description><ucd>meta.number</ucd><stats><min>194</min><percentile03>405.0</percentile03><median>1612.0</median><percentile97>45006.79000000001</percentile97><max>172027</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_g_parallax_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.6</min><percentile03>20.3</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_g_color</name><description>The mode of the G magnitude distribution in the respective HEALPix when also requiring a BP and RP measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.5</min><percentile03>19.7</percentile03><median>20.5</median><percentile97>20.6</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_g_color</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and BP and RP measurement</description><ucd>meta.number</ucd><stats><min>59</min><percentile03>428.0</percentile03><median>1651.0</median><percentile97>44354.370000000024</percentile97><max>121343</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_g_color_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.5</min><percentile03>20.5</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_g_parallax_color</name><description>The mode of the G magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>15.1</min><percentile03>19.3</percentile03><median>20.3</median><percentile97>20.6</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_g_parallax_color</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and parallax and BP and RP measurement</description><ucd>meta.number</ucd><stats><min>54</min><percentile03>400.0</percentile03><median>1596.0</median><percentile97>40766.580000000016</percentile97><max>114534</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_g_parallax_color_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.5</min><percentile03>20.3</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_bp</name><description>The mode of the BP magnitude distribution in the respective HEALPix</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.4</min><percentile03>20</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_bp</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7</description><ucd>meta.number</ucd><stats><min>59</min><percentile03>428.0</percentile03><median>1651.0</median><percentile97>44379.580000000016</percentile97><max>124846</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_bp_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.4</min><percentile03>20.4</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_bp_parallax</name><description>The mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.5</min><percentile03>19.9</percentile03><median>20.6</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_bp_parallax</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and parallax measurement</description><ucd>meta.number</ucd><stats><min>54</min><percentile03>400.0</percentile03><median>1596.0</median><percentile97>40792.16000000003</percentile97><max>117090</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_bp_parallax_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.3</min><percentile03>20.4</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_bp_color</name><description>The mode of the BP magnitude distribution in the respective HEALPix when also requiring a BP and RP measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.4</min><percentile03>20</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_bp_color</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and BP and RP measurement</description><ucd>meta.number</ucd><stats><min>59</min><percentile03>428.0</percentile03><median>1651.0</median><percentile97>44354.370000000024</percentile97><max>121343</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_bp_color_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.4</min><percentile03>20.4</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>maglim_bp_parallax_color</name><description>The mode of the BP magnitude distribution in the respective HEALPix when also requiring a parallax and BP and RP measurement</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>16.5</min><percentile03>19.9</percentile03><median>20.6</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>starcount_bp_parallax_color</name><description>The number of stars in the respective HEALPix bin with G&lt;20.7 and parallax and BP and RP measurement</description><ucd>meta.number</ucd><stats><min>54</min><percentile03>400.0</percentile03><median>1596.0</median><percentile97>40766.580000000016</percentile97><max>114534</max><fillFactor>1.0</fillFactor></stats><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>maglim_bp_parallax_color_density_threshold</name><description>The 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.</description><unit>mag</unit><ucd>instr.sensitivity</ucd><stats><min>17.3</min><percentile03>20.4</percentile03><median>20.7</median><percentile97>20.7</percentile97><max>20.7</max><fillFactor>1</fillFactor></stats><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column></table></schema></tableset></ri:Resource>