Information on Service 'Gaia EB classification Cone Search'

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This resource provides the results of a morphological classification of 2,184,283 eclipsing binary candidates from the Gaia DR3 catalogue. The systems are classified into EA/EB and EW types, followed by the identification of starspot signatures within both morphological classes. The classification was performed using a hierarchical computer-vision pipeline based on a fine-tuned ResNet-18 convolutional neural network trained on synthetic light curves generated with the ELISa code. The phase-folded Gaia G-band light curves are represented as 3-channel 128×128 pixel images encoding the flux distribution, its polar transformation, and the flux gradient. A tailored augmentation scheme calibrated to the Gaia cadence distribution was applied to reduce the synthetic-to-real domain gap (in prep). Because the morphological classification is based on single-passband Gaia G photometry alone, EW and ellipsoidal systems cannot be reliably distinguished. Therefore, systems with orbital periods P > 3 d initially classified as EW are explicitly reassigned as "ellipsoidal", since such long-period EW-type systems are physically unlikely for main-sequence stars.

For a list of all services and tables belonging to this service's resource, see Information on resource 'Morphological classification of eclipsing binaries from the Gaia'

Overview

You can access this service using:

Coverage

Intervals of messenger energies reflected in this resource: 1.23984 3.8149 eV

This service is published as follows:

local means it is listed on our front page, ivo_managed means it has a record in the VO registry.

Other services provided on the underlying data include:

Input Fields

The following fields are available to provide input to the service (with some renderers, some of these fields may be unavailable):

NameTable Head DescriptionUnitUCD
DEC Delta (ICRS) Declination (ICRS decimal) deg pos.eq.dec
hscs_pos Position/Name Coordinates (as h m s, d m s or decimal degrees), or SIMBAD-resolvable object N/A N/A
hscs_sr Search radius Search radius in arcminutes N/A N/A
main_class Main class EA/EB, EW or Ellispsoidal N/A meta.code.class
maxrec Match limit Maximum number of records returned. Pass 0 to retrieve service parameters. N/A N/A
RA Alpha (ICRS) Right Ascension (ICRS decimal) deg pos.eq.ra
responseformat Output Format File format requested for output. N/A meta.code.mime
source_id Gaia DR3 ID Gaia DR3 identifier N/A meta.id;meta.main
spot_class Spot class Presence of spots N/A meta.code.class
SR Search Radius Search radius deg N/A
verb Verbosity Exhaustiveness of column selection. VERB=1 only returns the most important columns, VERB=2 selects the columns deemed useful to the average user, VERB=3 returns a table with all available columns. N/A N/A

Default Output Fields

The following fields are contained in the output by default. More fields may be available for selection; these would be given below in the VOTable output fields.

NameTable Head DescriptionUnitUCD
_r Dist. Distance to cone center deg pos.angDistance
dec Dec (ICRS) Barycentric Declination in ICRS at epoch J2016.0 from Gaia DR3 deg pos.eq.dec;meta.main
dec_error Err. Dec Standard error of dec from Gaia DR3 mas stat.error;pos.eq.dec
main_class Main class EA/EB, EW or Ellispsoidal Note main_class_note N/A meta.code.class
period Period Period of the variable star calcukated from Gaia DR3 frequency d src.var;time.period
prob_ea_eb EA/EB probability Probability of classification as EA/EB Note prob_over N/A meta.code.class;stat.probability
prob_ew EW probability Probability of classification as EW Note prob_over N/A meta.code.class;stat.probability
prob_spot spot probability Probability of classification as spotted N/A meta.code.class;stat.probability
ra RA (ICRS) Barycentric Right Ascension in ICRS at epoch J2016.0 from Gaia DR3 deg pos.eq.ra;meta.main
ra_error Err. RA Standard error of ra (with cos δ applied) from Gaia DR3 mas stat.error;pos.eq.ra
source_id Gaia DR3 ID Gaia DR3 identifier N/A meta.id;meta.main
spot_class Spot class Presence of spots N/A meta.code.class
teff teff_gspphot Effective temperature from Gaia DR3 GSP-Phot Aeneas best library using BP/RP spectra K phys.temperature.effective

VOTable Output Fields

The following fields are available in VOTable output. The verbosity level is a number intended to represent the relative importance of the field on a scale of 1 to 30. The services take a VERB argument. A field is included in the output if their verbosity level is less or equal VERB*10.

NameTable Head DescriptionUnitUCD Verb. Level
ra RA (ICRS) Barycentric Right Ascension in ICRS at epoch J2016.0 from Gaia DR3 deg pos.eq.ra;meta.main 1
dec Dec (ICRS) Barycentric Declination in ICRS at epoch J2016.0 from Gaia DR3 deg pos.eq.dec;meta.main 1
_r Dist. Distance to cone center deg pos.angDistance 10
source_id Gaia DR3 ID Gaia DR3 identifier N/A meta.id;meta.main 20
period Period Period of the variable star calcukated from Gaia DR3 frequency d src.var;time.period 20
teff teff_gspphot Effective temperature from Gaia DR3 GSP-Phot Aeneas best library using BP/RP spectra K phys.temperature.effective 20
main_class Main class EA/EB, EW or Ellispsoidal Note main_class_note N/A meta.code.class 20
prob_ea_eb EA/EB probability Probability of classification as EA/EB Note prob_over N/A meta.code.class;stat.probability 20
prob_ew EW probability Probability of classification as EW Note prob_over N/A meta.code.class;stat.probability 20
spot_class Spot class Presence of spots N/A meta.code.class 20
prob_spot spot probability Probability of classification as spotted N/A meta.code.class;stat.probability 20
ra_error Err. RA Standard error of ra (with cos δ applied) from Gaia DR3 mas stat.error;pos.eq.ra 20
dec_error Err. Dec Standard error of dec from Gaia DR3 mas stat.error;pos.eq.dec 20

Citation Info

VOResource XML (that's something exclusively for VO nerds)

Note main_class_note

We explicitly assign the main class "ellipsoidal" to all systems with period > 3 d that are classified as EW, because such systems are physically unlikely. Using a single-passband light curve alone, we cannot reliably distinguish between EW and ellipsoidal systems.

Note prob_over

For systems explicitly reclassified as "ellipsoidal" based on long period and EW-like lightcurve shape, the value of prob_ew should be interpreted as the probability of an ellipsoidal classification.