Auxiliary information about mean BP/RP spectra (gaiadr3.xp_summary)
The table has 219197643 rows, 20 columns.
Description
This tables contains auxiliary information about the mean BP/RP spectrum of a given source. It should be used in order to refine queries on spectra and build dedicated samples before interrogating the DataLink protocol to download the results of those queries.
Attribution
If you have used Gaia data in your research, please use the following acknowledgement:
This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.
More information can be found on the credit and citation instructions page.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| source_id | long |
meta.id meta.main meta.ref |
Unique source identifier (unique within a particular Data Release) |
|
| solution_id | long | meta.version |
Solution Identifier |
|
| bp_n_relevant_bases | short | meta.number |
Number of bases that are relevant for the representation of this mean BP spectrum |
|
| bp_relative_shrinking | float | meta.number |
Measure of the relative shrinking of the coefficient vector when truncation is applied for the mean BP spectrum |
|
| bp_n_measurements | short | stat.fit.param |
Number of measurements used for the BP spectrum generation |
|
| bp_n_rejected_measurements | short | stat.fit.param |
Number of rejected measurements in the BP spectrum generation |
|
| bp_standard_deviation | float | stat.stdev | "electron".s**-1.pixel**-1 |
Standard deviation for the BP spectrum representation |
| bp_chi_squared | float | stat.fit.chi2 |
Chi squared for the BP spectrum representation |
|
| bp_n_transits | short | stat.fit.param |
Number of transits contributing to the mean in BP |
|
| bp_n_contaminated_transits | short | stat.fit.param |
Number of contaminated transits in BP |
|
| bp_n_blended_transits | short | stat.fit.param |
Number of blended transits in BP |
|
| rp_n_relevant_bases | short | stat.fit.param |
Number of bases that are relevant for the representation of this mean RP spectrum |
|
| rp_relative_shrinking | float | stat.fit.param |
Measure of the relative shrinking of the coefficient vector when truncation is applied for the mean RP spectrum |
|
| rp_n_measurements | short | stat.fit.param |
Number of measurements used for the RP spectrum generation |
|
| rp_n_rejected_measurements | short | stat.fit.param |
Number of rejected measurements in the RP spectrum generation |
|
| rp_standard_deviation | float | stat.stdev | "electron".s**-1.pixel**-1 |
Standard deviation for the RP spectrum representation |
| rp_chi_squared | float | stat.fit.chi2 |
Chi squared for the RP spectrum representation |
|
| rp_n_transits | short | stat.fit.param |
Number of transits contributing to the mean in RP |
|
| rp_n_contaminated_transits | short | stat.fit.param |
Number of contaminated transits in RP |
|
| rp_n_blended_transits | short | stat.fit.param |
Number of blended transits in RP |