Table information for 'ztf.feature'

General

Table Description:

Computed light-curve and variability features for ZTF objects used as input to ALeRCE classifiers. Features are stored per object, per filter, and per pipeline version.

This table is available for ADQL queries and through the TAP endpoint.

Resource Description:

Legacy ZTF astronomical catalog containing objects, detections, photometric measurements, classifications, and cross-matches from the Zwicky Transient Facility (ZTF) survey, as processed by the ALeRCE broker pipeline.

For a list of all services and tables belonging to this table's resource, see Information on resource 'ALeRCE ZTF Legacy Catalog'

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:ztf_feature,
  year=2026,
  title={{ZTF} Object Features},
  author={{ALeRCE} Team},
  url={http://tap.alerce.online/tableinfo/ztf.feature},
  howpublished={{VO} resource provided by the {ALeRCE} {TAP} service}
}

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
fid Fid Filter identifier (1=g, 2=r, 3=i); 0 for multi-band features N/A meta.id;instr.filter
name Name Feature name (e.g., Amplitude, Period, IAR_phi) N/A meta.id
oid Oid Object identifier N/A meta.id;src
value Value Computed feature value N/A stat.param
version Version Feature computation version N/A meta.version

Columns that are parts of indices are marked like this.

VOResource

VO nerds may sometimes need VOResource XML for this table.