I/356 Gaia DR3 Part 2. Extra-galactic (Gaia Collaboration, 2022)
Gaia Data Release 3 (Gaia DR3) Part 2: Extra-galactic Gaia sources.
Gaia collaboration
<Astron. Astrophys., in prep. 2022)>
=2023A&A...674A...1G 2023A&A...674A...1G
=2022yCat.1356....0G 2022yCat.1356....0G
ADC_Keywords: Surveys ; Galaxies ; QSOs ; Optical
Mission_Name: Gaia
Keywords: catalogs - astrometry - parallaxes - proper motions -
techniques: photometric - techniques: radial velocities
Abstract:
Gaia Data Release 3 (Gaia DR3) will be released on 13 June 2022.
The Gaia DR3 catalogue builds upon the Early Data Release 3 (released
on 3 December 2020) and combines, for the same stretch of time and the
same set of observations, these already-published data products with
numerous new data products such as extended objects and non-single
stars.
Description:
The set of data released as Gaia Early Data Release 3 (Gaia EDR3) on 3
December 2020 comprises:
The full astrometric solution --- positions on the sky (α,
δ), parallaxes, and proper motions --- for around 1.46 billion
(1.46*109) sources, with a limiting magnitude of about G≃21 and a
bright limit of about G≃3. The astrometric solution is accompanied
with some new quality indicators, like RUWE, and source image
descriptors. The full astrometric solution has been done as
5-parameter solution for 585 million sources and as 6-parameter
solution for 882 million sources. In the 6-parameter solution, the
additional fitted quantity is the so-called pseudo-colour that had to
be included for sources without high-quality colour information. In
addition, two-parameters solutions --- positions on the sky (α,
δ) --- for around 344 million additional sources. G magnitudes
for around 1.806 billion sources (with the known issue present in EDR3
corrected in Gaia DR3). GBP and GRP magnitudes for around 1.54 billion
and 1.55 billion sources, respectively.
In Gaia Data Release 3 (Gaia DR3), the above set of data is
complemented with new products released on 13 June 2022 (EAS
presentation A. Vallenari):
Object classifications for 1.59 billion sources and astrophysical
parameters (Teff, logg, [M/H], AG, distance, etc.) from BP/RP spectra
for 470 million objects, including MCMC samples for most sources with
astrophysical parameters (EAS presentation O.Creevey). Other
astrophysical parameters from the BP/RP spectra include:
Spectral types (217 million stars) and emission-line star
classifications (57,000 stars);
Spectroscopic parameters for 2.3 million hot stars, 94,000 ultra-cool
stars, activity index for 1.3 million cool stars, and H-alpha emission
for 235 million stars;
Evolutionary parameters (mass and age) for 128 million stars;
Astrophysical parameters for 348 million objects based on the
assumption of an unresolved binary in the BP/RP spectra;
Self-organised map (outlier) analysis based on 56 million sources with
the weakest object classifications. Astrophysical parameters (Teff,
logg, [M/H], [X/M] for 12 elements, etc.) from RVS spectra for 5.5
million objects, including diffuse interstellar bands for 472,000
objects.
All-sky total galactic extinction maps at 4 different spatial
resolutions (HEALPix levels 6, 7, 8, and 9).
Mean BP/RP spectra for 219 million sources, most of them with G < 17.6
mag (EAS Presentation F. De Angeli).
Mean RVS spectra for 1 million well-behaved objects (EAS presentation
P. Sartoretti).
Mean radial velocities for 33 million stars and mean GRVS magnitudes
for 32 million objects with GRVS≲14mag with effective temperatures
(Teff) in the range of ∼3100 to 14500K (EAS presentation P.
Sartoretti).
Rotational velocities for 3.5 million sources with GRVS≲12mag.
Variability analysis, together with the underlying epoch photometry,
for 10.5 million sources. Apart from classification into 24
variability classes, detailed variability results are provided in
separate tables for the following candidates (EAS presentation L.
Eyer):
Cepheids (15,021 objects);
Compact companions (6306 objects);
Eclipsing binaries (2,184,477 objects);
Long-period variables (1,720,588 objects);
Microlensing events (363 objects);
Planetary transits (214 objects);
RR Lyrae stars (271,779 objects);
Short-timescale variables (471,679 objects);
Solar-like rotational modulation variables (474,026 objects);
Upper-main-sequence oscillators (54,476 objects);
Active galactic nuclei (872,228 objects).
Solar-system results for 158,000 sources (including 31 planetary
satellites), with orbital solutions and individual epoch observations
for 154,000 objects and with mean BP/RP reflectance spectra for more
than 60,000 objects (EAS presentation P. Tanga). Some 813,000
non-single stars, including amongst others non-single-star models for
sources compatible with an astrometric acceleration solution,
non-single-star orbital models for spectroscopic binaries compatible
with a trend, and non-single-star orbital models for sources
compatible with a two-body solution (EAS presentation F. Arenou).
Some 6.6 million quasar candidates with redshift estimates for most of
them (EAS presentation L. Galluccio).
Some 1.1 million quasars analysed with 60,000 host galaxies detected
and 15,000 surface brightness profiles of the host galaxy.
Some 4.8 million galaxy candidates with redshift estimates for more
than 1 million objects (EAS presentation L. Galluccio).
Some 900,000 galaxies analysed with two surface brightness profiles.
The Gaia Andromeda Photometric Survey (GAPS), consisting of the
photometric time series for all 1.2 million sources located in a
5.5-degree radius field centred on the Andromeda galaxy.
Selected tables from Gaia Collaboration performance verification
papers published with Gaia DR3.
All 2612 science alerts triggered in the period underlying Gaia DR3.
The new data set neither contains new astrometry nor new photometric
calibrations such that the following elements are in common for and
apply to both Gaia EDR3 and Gaia DR3:
About 1.61 million celestial reference frame (Gaia-CRF3) sources.
Cross-matches between Gaia (E)DR3 sources on the one hand and
Hipparcos-2, Tycho-2 + TDSC merged, 2MASS PSC (merged with 2MASS XSC),
SDSS DR13, Pan-STARRS1 DR1, SkyMapper DR2, GSC 2.3, APASS DR9, RAVE
DR5, allWISE, URAT-1, and RAVE DR6 data on the other hand.
Additionally, a Gaia DR2 to Gaia (E)DR3 match table.
Full photometric passband definitions for G, GBP, GRP, and GRVS. More
information is available here. Please be aware that the photometric
system for the G, GBP, and GRP bands in Gaia (E)DR3 is different from
the photometric systems as used in Gaia DR2 and in Gaia DR1.
Simulated data from the Gaia Object Generator (GOG) and the Gaia
Universe Model Snapshot (GUMS).
The commanded scan law covering the Gaia (E)DR3 data collection
period. Also the major periods where data was not sent to the ground
or could not be processed are identified.
All of the above combined makes up the full Gaia Data Release 3.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
galcand.dat 1032 4842342 Parameters derived from various modules
dedicated to the classification and
characterisation of sources considered as
galaxy candidates (Galaxy_candidates)
qsocand.dat 995 6649162 Parameters derived from various modules
dedicated to the classification and
characterisation of sources considered as QSO
candidates (QSO_candidates)
--------------------------------------------------------------------------------
See also:
I/355 : Gaia DR3 Part 1: Main sources
I/356 : Gaia DR3 Part 2: Extra-galactic
I/357 : Gaia DR3 Part 3: Non-single stars
I/358 : Gaia DR3 Part 4: Non-single stars
I/359 : Gaia DR3 Part 5: Solar System
I/360 : Gaia DR3 Part 6: Performance verification
Byte-by-byte Description of file: galcand.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- Source Unique source identifier (unique within a
particular Data Release) (source_id)
21- 39 I19 --- SolID Solution Identifier (solution_id)
41- 55 A15 --- Class Name of best class (in vcclassd.dat table)
(varibestclass_name)
57- 69 E13.8 --- ClassSc ? Score of the best class
(varibestclass_score)
71- 83 E13.8 --- PGal ? Probability from DSC-Combmod of being a
galaxy (data used: BP/RP spectrum,
photometry, astrometry)
(classprobdsccombmod_galaxy)
85- 98 E14.8 --- PQSO ? Probability from DSC-Combmod of being a
quasar (data used: BP/RP spectrum,
photometry, astrometry)
(classprobdsccombmod_quasar)
100- 113 A14 --- ClassDSCC Class assigned by DSC based on the
probability from its Combmod classifier
(classlabel_dsc)
115- 126 A12 --- ClassDCSSA Class assigned by DSC based on the
probability from its Specmod and Allosmod
classifiers (classlabeldscjoint)
128- 138 A11 --- ClassOA Class assigned by OA the neuron that
represents the source (classlabel_oa)
140- 152 E13.7 --- z ? Redshift from UGC (redshift_ugc)
154- 166 E13.7 --- zlow ? Redshift prediction lower limit from UGC
(redshiftugclower)
168- 178 F11.9 --- zupp ? Redshift prediction upper limit from UGC
(redshiftugcupper)
180- 182 I3 --- Ntrans Number of transits used for the
morphological analysis (n_transits)
184- 206 F23.19 deg PAS ? Fitted position angle of the source for
the Sersic Profile (posangle_sersic)
208- 228 E21.16 deg e_PAS ? Error on the fitted position angle of the
source for the Sersic Profile
(posanglesersicerror)
230- 250 F21.19 e-/s IntS ? Fitted intensity of the source for the
Sersic Profile (intensity_sersic)
252- 273 E22.16 e-/s e_IntS ? Error on the fitted intensity of the
source at effective radius radiusSersic
(intensitysersicerror)
275- 293 F19.14 mas RadS ? Fitted effective radius of the source for
the Sersic Profile (radius_sersic)
295- 316 E22.16 mas e_RadS ? Error on the fitted effective radius of
the source for the Sersic Profile
(radiussersicerror)
318- 338 E21.16 --- ellS ? Fitted ellipticity of source for the
Sersic Profile (ellipticity_sersic)
340- 361 E22.16 --- e_ellS ? Error on the fitted ellipticity of the
source for the Sersic Profile
(ellipticitysersicerror)
363- 372 F10.8 --- nS ? Fitted Sersic Index for Sersic Profile
(n_sersic)
374- 387 E14.8 --- e_nS ? Error on the fitted Sersic Index for
Sersic Profile (nsersicerror)
389- 408 F20.17 --- L2S ? L2 norm for the Sersic Profile
(l2_sersic)
410- 431 E22.16 --- mpcvS0 ? Parameter 0 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[0])
433- 454 E22.16 --- mpcvS1 ? Parameter 1 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[1])
456- 477 E22.16 --- mpcvS2 ? Parameter 2 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[2])
479- 500 E22.16 --- mpcvS3 ? Parameter 3 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[3])
502- 523 E22.16 --- mpcvS4 ? Parameter 4 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[4])
525- 546 E22.16 --- mpcvS5 ? Parameter 5 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[5])
548- 569 E22.16 --- mpcvS6 ? Parameter 6 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[6])
571- 592 E22.16 --- mpcvS7 ? Parameter 7 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[7])
594- 615 E22.16 --- mpcvS8 ? Parameter 8 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[8])
617- 638 E22.16 --- mpcvS9 ? Parameter 9 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the Sersic Profile
(morphparamscorrvecsersic[9])
640 I1 --- FlagsS [0/8]? Flag indicative of processing or
scientific quality for the morphological
parameters fitting for the Sersic Profile
(flags_sersic) (4)
642- 663 F22.18 deg PAdV ? Fitted position angle of the source for
the de Vaucouleurs Profile
(posangledevaucouleurs)
665- 685 E21.16 deg e_PAdV ? Error on the fitted position angle of the
source for the de Vaucouleurs Profile
(posangledevaucouleurs_error)
687- 706 F20.18 e-/s IntdV ? Fitted intensity of the source for the
de Vaucouleurs Profile
(intensitydevaucouleurs)
708- 729 E22.16 e-/s e_IntdV ? Error on the fitted intensity of the
bulge for the de Vaucouleurs Profile
(intensitydevaucouleurs_error)
731- 750 F20.14 mas RaddV ? Fitted effective radius of the source for
de Vaucouleurs Profile
(radiusdevaucouleurs)
752- 773 E22.16 mas e_RaddV ? Error on the fitted effective radius of
the source for the de Vaucouleurs Profile
(radiusdevaucouleurs_error)
775- 795 E21.16 --- ElldV ? Fitted ellipticity of source for the
de Vaucouleurs Profile
(ellipticitydevaucouleurs)
797- 818 E22.16 --- e_ElldV ? Error on the fitted ellipticity of the
source for the de Vaucouleurs Profile
(ellipticitydevaucouleurs_error)
820- 839 F20.17 --- L2dV ? L2 norm for the de Vaucouleurs Profile
(l2devaucouleurs)
841- 862 E22.16 --- mpcvdV0 ? Parameter 0 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[0])
864- 885 E22.16 --- mpcvdV1 ? Parameter 1 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[1])
887- 908 E22.16 --- mpcvdV2 ? Parameter 2 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[2])
910- 931 E22.16 --- mpcvdV3 ? Parameter 3 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[3])
933- 954 E22.16 --- mpcvdV4 ? Parameter 4 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[4])
956- 977 E22.16 --- mpcvdV5 ? Parameter 5 of vector form of the upper
triangle of the correlation matrix for the
fitted parameters for the de Vaucouleurs
Profile
(morphparamscorrvecde_vaucouleurs[5])
979 I1 --- FlagsdV [0/8]? Flag indicative of processing or
scientific quality for the morphological
parameters fitting for the de Vaucouleurs
Profile (flagsdevaucouleurs) (1)
981- 982 I2 --- FlagSel Bit indicative of whether the input data
from a given module met the source list
eligibility criteria for the source of
interest (sourceselectionflags) (2)
984 I1 --- CatID [0/1]? Catalog id (catalogue_id)
986-1008 E23.16 deg RAdeg Right ascension (ICRS) at Ep=2016.0 (ra)
1010-1032 E23.16 deg DEdeg Declination (ICRS) at Ep=2016.0 (dec)
--------------------------------------------------------------------------------
Note (1): flagsS as follows:
1 = Elliptical profile fitted, other source exists at less that 2.5arcsec,
doubtful solution
2 = Circular profile fitted, other source exists at less that 2.5arcsec,
doubtful solution
3 = Elliptical profile fitted, the position angle did not converge and one
parameter or more is at the bound, Poor solution.
4 = Elliptical profile fitted, the position angle did not converge
5 = Elliptical profile fitted, one parameter or more is at the bound,
Poor solution
6 = Elliptical profile fitted
7 = Circular profile fitted, one parameter or more is at the bound,
Poor solution
8 = Circular profile fitted
Note (2): The bit is coded as:
bit 0 = The source meets the eligibility criteria for the output of the
Surface brightness analysis module
bit 1 = The source belongs to the {GalaxyCatalogueName} table.
bit 2 = The source meets the eligibility criteria for the output of the
classification module based on photometric lightcurves
bit 3 = The source meets the eligibility criteria for the output of the DSC
module
bit 4 = The source meets the eligibility criteria for the redshift
determined by the UGC module
bit 5 = The source meets the eligibility criteria for the classification
output of the UGC module (not yet applicable to DR3).
Note (4): Sersic flags as follows:
1 = Elliptical profile fitted, other source exists at less that 2.5",
doubtful solution
2 = Circular profile fitted, other source exists at less that 2.5",
doubtful solution
3 = Elliptical profile fitted, the position angle did not converge and
one parameter or more is at the bound, poor solution.
4 = Elliptical profile fitted, the position angle did not converge
5 = Elliptical profile fitted, one parameter or more is at the bound,
poor solution
6 = Elliptical profile fitted
7 = Circular profile fitted, one parameter or more is at the bound,
poor solution
8 = Circular profile fitted
--------------------------------------------------------------------------------
Byte-by-byte Description of file: qsocand.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- Source Unique source identifier (unique within a
particular Data Release) (source_id)
21- 39 I19 --- SolID Solution Identifier (solution_id)
41 I1 --- ASF [0/1] Flag indicating if the source is part
of the astrometric selection
(astrometricselectionflag)
43 I1 --- GCS [0/1] Flag indicative of whether the source
was used define the Gaia-CRF3
(gaiacrfsource)
45- 70 A26 --- Class Name of best class (in vcclassd.dat table)
(varibestclass_name)
72- 84 E13.8 --- ClassSc ? Score of the best class
(varibestclass_score)
86- 97 E12.7 --- fvarG ? Fractional variability in the G band
(fractionalvariabilityg)
99-111 E13.7 --- SFIndex ? Index of the first-order structure function
in the G band (structurefunctionindex)
113-132 F20.18 --- s_SFIndex ? Standard deviation of the index of the
structure function
(structurefunctionindex_scatter)
134-147 E14.8 --- QSOVar ? Quasar variability metric in the G band
(qso_variability)
149-162 E14.8 --- NonQSOVar ? Non-quasar variability metric in the G band
(nonqsovariability)
164-185 E22.16 --- VAGNMenSc ? Membership score (0=lowest,1=highest) of
source to be of AGN type
(variagnmembership_score)
187-200 E14.8 --- PQSO ? Probability from DSC-Combmod of being a
quasar (data used: BP/RP spectrum,
photometry, astrometry)
(classprobdsccombmod_quasar)
202-215 E14.8 --- PGal ? Probability from DSC-Combmod of being a
galaxy (data used: BP/RP spectrum,
photometry, astrometry)
(classprobdsccombmod_galaxy)
217-230 A14 --- ClassDSCC Class assigned by DSC based on the
probability from its Combmod classifier
(classlabel_dsc)
232-243 A12 --- ClassDCSSA Class assigned by DSC based on the
probability from its Specmod and Allosmod
classifiers (classlabeldscjoint)
245-255 A11 --- ClassOA Class assigned by OA the neuron that
represents the source (classlabel_oa)
257-267 F11.9 --- z ? Redshift from QSOC (redshift_qsoc)
269-280 F12.9 --- zlow ? Redshift lower confidence level from QSOC
(redshiftqsoclower)
282-292 F11.9 --- zupp ? Redshift upper confidence level from QSOC
(redshiftqsocupper)
294-304 F11.9 --- CCF ? Value of the cross-correlation function
used to derive the redshift from QSOC
(ccfratio_qsoc)
306-318 E13.8 --- QSOCSc ? Redshift zscore from QSOC (zscore_qsoc)
320-321 I2 --- flagsQSOC [0/31]? Processing flags for the analysis
based on BP/RP Spectra from QSOC
(flags_qsoc) (1)
323-325 I3 --- Ntrans Number of transits used for the morphological
analysis (n_transits)
327-347 F21.16 e-/s IntQSO ? Fitted intensity of the quasar at its
centre (intensity_quasar)
349-370 E22.16 e-/s e_IntQSO ? Error on the fitted intensity of the quasar
at its centre (intensityquasarerror)
372-392 F21.18 e-/s IntHost ? Fitted intensity of the host galaxy at the
effective radius (intensity_hostgalaxy)
394-415 E22.16 e-/s e_IntHost ? Error on the fitted intensity of the host
galaxy at effective radius
(intensityhostgalaxyerror)
417-435 F19.14 mas RadHost ? Fitted effective radius of the host galaxy
(radius_hostgalaxy)
437-457 E21.16 mas e_RadHost ? Error on the fitted effective radius of the
host galaxy (radiushostgalaxyerror)
459-468 F10.8 --- n ? Fitted sersic Index (sersic_index)
470-482 E13.8 --- e_n ? Error on the fitted sersic Index
(sersicindexerror)
484-503 F20.18 --- EllHost ? Fitted ellipticity of the host galaxy
(ellipticity_hostgalaxy)
505-525 E21.16 --- e_EllHost ? Error on the fitted ellipticity of the host
galaxy (ellipticityhostgalaxyerror)
527-548 F22.18 deg PAHost ? Fitted position angle of the host galaxy
(posangle_hostgalaxy)
550-570 E21.16 deg e_PAHost ? Error on the fitted position angle of the
host galaxy (posanglehostgalaxyerror)
572 I1 --- HostDet [0/1] Flag indicating whether a host galaxy
has been detected (hostgalaxydetected)
574-592 F19.16 --- L2 ? L2 norm for the fitted Sersic profile
(l2_norm)
594-615 E22.16 --- mpcv0 ? Parameter 0 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[0])
617-638 E22.16 --- mpcv1 ? Parameter 1 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[1])
640-661 E22.16 --- mpcv2 ? Parameter 2 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[2])
663-684 E22.16 --- mpcv3 ? Parameter 3 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[3])
686-707 E22.16 --- mpcv4 ? Parameter 4 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[4])
709-730 E22.16 --- mpcv5 ? Parameter 5 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[5])
732-753 E22.16 --- mpcv6 ? Parameter 6 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[6])
755-776 E22.16 --- mpcv7 ? Parameter 7 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[7])
778-799 E22.16 --- mpcv8 ? Parameter 8 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[8])
801-822 E22.16 --- mpcv9 ? Parameter 9 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[9])
824-845 E22.16 --- mpcv10 ? Parameter 10 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[10])
847-868 E22.16 --- mpcv11 ? Parameter 11 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[11])
870-891 E22.16 --- mpcv12 ? Parameter 12 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[12])
893-914 E22.16 --- mpcv13 ? Parameter 13 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[13])
916-937 E22.16 --- mpcv14 ? Parameter 14 of vector form of the upper
triangle of the correlation matrix for the
fitted morphological parameters
(morphparamscorr_vec[14])
939 I1 --- FlagHost [0/6]? Flag indicative of processing or
scientific quality for the morphological
parameters fitting (hostgalaxyflag) (2)
941-943 I3 --- FlagSel Bit indicative of whether the input data from
a given module met the source list
eligibility criteria for the source of
interest (sourceselectionflags) (3)
945-947 I3 --- CatID ? Catalog id (catalogue_id)
949-971 E23.16 deg RAdeg Right ascension (ICRS) at Ep=2016.0 (ra)
973-995 E23.16 deg DEdeg Declination (ICRS) at Ep=2016.0 (dec)
--------------------------------------------------------------------------------
Note (1): FlagsQSOC (binary combination (binary OR)) as:
0 = Z_NOWARNING. The processing of this source raised no warning flag.
1 = Z_AMBIGUOUS. The cross correlation function has more than one maximum
with {ccfratioQsoc}>0.85, meaning that at least two redshifts lead to
a similar chi2 and the solution is ambiguous
2 = Z_LOWCCFRATIO. The selected redshift leads to a small value of the
cross correlation function when compared to the maximum value of the
cross correlation function. Equivalently, {ccfratioQsoc}<0.9.
4 = Z_LOWZSCORE. The selected redshift leads to a low {zscoreQsoc}, meaning
that at least one emission line is either missing or is strongly
damped. Equivalently, {zscoreQsoc}<0.9.
8 = Z_NOTOPTIMAL. We did not choose the redshift having the lowest chi2
(i.e. {ccfratioQsoc}<1).
16 = Z_BADSPEC. Raised if one of the following conditions is met:
the number of BP or RP spectral transits (NBP and NRP hereafter), is
lower than 10 transits, or G>20.5mag, or G>19+0.03*(NBP-10)mag, or
G>19+0.03*(NRP-10)mag.
This allows the user to filter out uncertain predictions in a simple way
without having to explicitly deal with the aforementioned formula,
nor with NBP and NRP.
Note (2): FlagHost as follows:
1 = Host Galaxy measured with circular Sersic profile
2 = Host Galaxy measured with elliptical Sersic profile
3 = No host galaxy detected
4 = Poor solution measured with elliptical Sersic profile
5 = No convergence of fitting but host galaxy detected
6 = No convergence of fitting or doubtful solution due to presence of a
secondary source at d<5 arcsec
Note (3): The bit is coded as:
bit 0 = The source belongs to the Gaia-CRF3 ({AgnCrossId} table)
bit 1 = The source belongs to the {FrameRotatorSource} table with either
{usedForReferenceFrameOrientation} or
{usedForReferenceFrameSpin} set to True.
bit 2 = The source meets the eligibility criteria for the output of the
Surface brightness analysis module
bit 3 = The source belongs to the {QsoCatalogueName} table.
bit 4 = The source meets the eligibility criteria for the output of the
classification module based on photometric lightcurves
bit 5 = The source meets the eligibility criteria for the output of the SOS
AGN module
bit 6 = The source meets the eligibility criteria for the output of the DSC
module
bit 7 = The source meets the eligibility criteria for the redshift determined
by the QSOC module
bit 8 = The source meets the eligibility criteria for the classification
output of the QSOC module (not yet applicable to DR3)
--------------------------------------------------------------------------------
History:
From Gaia team
Acknowledging Gaia/esa :
Acknowledge and cite Gaia DR3:
https://www.cosmos.esa.int/web/gaia-users/credits
Acknowledgements:
Gaia team
(End) Arnaud Siebert, Francois-Xavier Pineau, Patricia Vannier [CDS] 11-May-2022