NSS models compatible with a VIM solution (gaiadr3.nss_vim_fl)

The table has 870 rows, 27 columns.

Description

This table contains non-single-star models for sources compatible with an Variability Induced Mover (VIM) solution. Several possible models are in principle hosted within the same table and they are indicated by the field nss_solution_type. The description of this latter lists all possible solution types considered for this release. Only a selection of parameters hosted in this table are provided here, depending on the solution. The details of those is given in the description of field bit_index, which can also be used to extract the relevant elements of the correlation vector corr_vec.For DR3, only VIMF solutions are provided here. Details about the formalism used to derive the parameters in this table are given in the on-line documentation, see Chapter cu4nss.

Attribution

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 (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

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Columns

Name Type UCD Unit Description
solution_id long meta.version

Solution Identifier
source_id long meta.id
meta.main
meta.ref

Source Identifier
nss_solution_type char meta.code.class

NSS model adopted
ra double pos.eq.ra
meta.main 		deg

Right ascension
ra_error float stat.error
pos.eq.ra 		mas

Standard error of right ascension
dec double pos.eq.dec
meta.main 		deg

Declination
dec_error float stat.error
pos.eq.dec 		mas

Standard error of declination
parallax double pos.parallax mas

Parallax
parallax_error float stat.error
pos.parallax 		mas

Standard error of parallax
pmra double pos.pm
pos.eq.ra 		mas.yr**-1

Proper motion in right ascension direction
pmra_error float stat.error
pos.pm
pos.eq.ra 		mas.yr**-1

Standard error of proper motion in right ascension direction
pmdec double pos.pm
pos.eq.dec 		mas.yr**-1

Proper motion in declination direction
pmdec_error float stat.error
pos.pm
pos.eq.dec 		mas.yr**-1

Standard error of proper motion in declination direction
ref_flux_g float phot.flux
em.opt 		"electron".s**-1

Reference flux in the G band
vim_d_ra double pos.eq.ra mas

VIM coordinate in RA
vim_d_ra_error float stat.error
pos.eq.ra 		mas

Standard error of VIM coordinate in RA
vim_d_dec double pos.eq.dec mas

VIM coordinate in DEC
vim_d_dec_error float stat.error
pos.eq.dec 		mas

Standard error of VIM coordinate in DEC
astrometric_n_obs_al integer meta.number

Total astrometric CCD observations in AL considered
astrometric_n_good_obs_al integer meta.number

Total astrometric CCD observations in AL actually used
bit_index long meta.code.status

Boolean mask for the fields above in the corrVec matrix
corr_vec float[] stat.correlation

Vector form of the upper triangle of the correlation matrix
obj_func float stat.fit.param

Value of the objective function at the solution
goodness_of_fit float stat.fit.goodness

Goodness of fit in the Hipparcos sense
efficiency float stat.fit.param

Efficiency of the solution
significance float stat.fit.param

The significance of the solution (i.e. how worth keeping a model is)
flags long meta.code.qual

Quality flag for the achieved NSS solution