Bolometric luminosities and radii in solar units for a subset of ultracool dwarfs (gaiadr3.gold_sample_ucd)

The table has 21062 rows, 7 columns.


The table contains the bolometric luminosities and radii in solar units for a subset of ultracool dwarfs from the Gaia DR3 catalogue, as well as some intermediate quantities used in the selection of sources and in the derivation of the luminosities and radii. For more details please refer to DR3-DPACP-123.


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 (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

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Name Type UCD Unit Description
source_id long

Unique source identifier (unique within a particular Data Release)

ftot_fobs float arith.factor

Correction factor applied to obtain the total SED flux

lum float phys.luminosity solLum

Bolometric luminosity in solar units

lum_uncertainty float stat.error

Uncertainty in bolometric luminosity

radius float phys.size.radius solRad

Radius in solar unit

radius_uncertainty float stat.error

Uncertainty in radius

reduced_chi2 float

Reduced chi-square of the SED fit