NSS orbital models compatible with a linear trend (gaiadr3.nss_non_linear_spectro)

The table has 56808 rows, 16 columns.


This table contains non-single-star orbital models for spectroscopic binaries compatible with a trend. Several possible models are 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. Details about the formalism used to derive the parameters in this table are given in the on-line documentation, see Chapter cu4nss.


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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Name Type UCD Unit Description
solution_id long meta.version

Solution Identifier

source_id long meta.id

Source Identifier

nss_solution_type char meta.record

NSS model adopted

mean_velocity double phys.veloc km.s**-1

Mean velocity

mean_velocity_error float stat.error

Standard error of Mean velocity

first_deriv_velocity double phys.acceleration Km.s**-1.d**-1

First order derivative of the velocity

first_deriv_velocity_error float stat.error

Standard error of First order derivative of the velocity

second_deriv_velocity double phys.acceleration Km.s**-1.d**-2

Second order derivative of the velocity

second_deriv_velocity_error float stat.error

Standard error of Second order derivative of the velocity

rv_n_obs_primary integer meta.number

Total number of radial velocities considered for the primary

rv_n_good_obs_primary integer meta.number

Total number of radial velocities actually used for the primary

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

flags long meta.code.status

Quality flag for the achieved NSS solution