2.2 phot_variable_time_series_gfov

Field-of-view time series of sources that have phot_variable_flag = "VARIABLE" in the gaia_source table.

Columns description:

solution_id : Solution Identifier (long)

The data in the MDB will be described by means of a ”Solution identifier” parameter. This will be a numeric field attached to each table row that can be used to unequivocally identify the version of all the subsystems that where used in the generation of the data as well as the input data used. Each DPC generating the data will have the freedom to choose the Solution identifier number, but they must ensure that given the Solution identifier they can provide detailed information about the ”conditions” used to generate the data: versions of the software, version of the data used…

source_id : Unique source identifier (long)

A unique single numerical identifier of the source obtained from gaia_source (for a detailed description see gaia_source.source_id)

observation_time : Barycentric light-travel time corrected timestamp for each FOV observation (double, Time[Barycentric JD in TCB - 2455197.5 (day)])

Field-of-view transit averaged observation time in units of Barycentric JD (in TCB) in days -2 455 197.5, computed as follows. First the observation time is converted from On-board Mission Time (OBMT) into Julian date in TCB (Temps Coordonnée Barycentrique). Next a correction is applied for the light-travel time to the Solar system barycentre, resulting in Barycentric Julian Date (BJD). Finally, an offset of 2 455 197.5 days is applied (corresponding to a reference time T0 at 2010-01-01T00:00:00) to have a conveniently small numerical value. Although the centroiding time accuracy of the individual CCD observations is (much) below 1 ms, this per-FoV observation time is averaged over typically 9 CCD observations taken in a time range of about 44 sec.

g_flux : G-band flux for each FOV observation (double, Flux[e-/s])

G-band flux for the field-of-view transit observation.

g_flux_error : Estimated G-band flux uncertainty for each FOV observation (double, Flux[e-/s])

Estimated uncertainty of G-band flux for the field-of-view transit observation.

g_magnitude : G-band magnitude for each FOV observation (double, Magnitude[mag])

G-band magnitude for the field-of-view transit observation, computed from the g_flux field using magnitude zero-point defined in ExtPhotZeroPoint.

rejected_by_variability_processing : True when this FOV observation was excluded from variability analyses (boolean, Dimensionless[see description])

Observations with this flag true have been excluded from the variability result in tables variable_summary, cepheid, rrlyrae, and phot_variable_time_series_gfov_statistical_parameters.