non-single-star (NSS) orbital models compatible with two-body solution (gaiadr3.nss_two_body_orbit)

The table has 443205 rows, 77 columns.

Description

This table contains non-single-star orbital models for sources compatible with an orbital two-body solution. This covers astrometric binaries, spectroscopic binaries, eclipsing binaries and certain combinations thereof. 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. Warning: as a source may receive independent astrometric, spectroscopic or photometric orbits, a query using a given source_id may return several solutions. This has to be accounted for when doing a crossmatch by source_id.

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.record 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
a_thiele_innes double phys.angSize mas Thiele-Innes element A
a_thiele_innes_error float stat.error
phys.angSize
mas Standard error of Thiele-Innes element A
b_thiele_innes double phys.angSize mas Thiele-Innes element B
b_thiele_innes_error float stat.error
phys.angSize
mas Standard error of Thiele-Innes element B
f_thiele_innes double phys.angSize mas Thiele-Innes element F
f_thiele_innes_error float stat.error
phys.angSize
mas Standard error of Thiele-Innes element F
g_thiele_innes double phys.angSize mas Thiele-Innes element G
g_thiele_innes_error float stat.error
phys.angSize
mas Standard error of Thiele-Innes element G
c_thiele_innes double phys.angSize
phys.angSize.smajAxis
AU C element of Thiele-Innes
c_thiele_innes_error float stat.error
phys.angSize
phys.angSize.smajAxis
AU Standard error of C element of Thiele-Innes
h_thiele_innes double phys.angSize
phys.angSize.smajAxis
AU H element of Thiele-Innes
h_thiele_innes_error float stat.error
phys.angSize
phys.angSize.smajAxis
AU Standard error of H element of Thiele-Innes
period double time.period d Orbital Period
period_error float stat.error
time.period
d Standard error of Orbital Period
t_periastron double time.epoch d Periastron epoch
t_periastron_error float stat.error
time.epoch
d Standard error of Periastron epoch
eccentricity double src.orbital.eccentricity eccentricity
eccentricity_error float stat.error
src.orbital.eccentricity
Standard error of eccentricity
center_of_mass_velocity double phys.veloc km.s**-1 The velocity of the center of mass
center_of_mass_velocity_error float stat.error
phys.veloc
km.s**-1 Standard error of The velocity of the center of mass
semi_amplitude_primary double phys.veloc km.s**-1 Semi-amplitude of the center of mass
semi_amplitude_primary_error float stat.error
phys.veloc
km.s**-1 Standard error of Semi-amplitude of the center of mass
semi_amplitude_secondary double phys.veloc km.s**-1 The semiamplitude of the radial velocity curve for second component
semi_amplitude_secondary_error float stat.error
phys.veloc
km.s**-1 Standard error of The semiamplitude of the radial velocity curve for second component
mass_ratio double phys.mass
arith.ratio
Mass ratio
mass_ratio_error float stat.error Standard error of Mass ratio
fill_factor_primary double src.morph.param Fill factor of primary
fill_factor_primary_error float stat.error Standard error of Fill factor of primary
fill_factor_secondary double src.morph.param Fill factor of secondary
fill_factor_secondary_error float stat.error Standard error of Fill factor of secondary
inclination double src.orbital.inclination deg Orbital inclination
inclination_error float stat.error
src.orbital.inclination
deg Standard error of Orbital inclination
arg_periastron double src.orbital.periastron deg Argument of periastron
arg_periastron_error float stat.error
src.orbital.periastron
deg Standard error of Argument of periastron
temperature_ratio double phys.temperature
arith.ratio
Ratio of the effective temperatures
temperature_ratio_error double stat.error
phys.temperature
Standard error of the ratio of the effective temperatures
temperature_ratio_definition short meta.number Code defining which fitting scenario did apply to the effective temperature
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
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
rv_n_obs_secondary integer meta.number Total number of radial velocities considered for the secondary in the case of SB2
rv_n_good_obs_secondary integer meta.number Total number of radial velocities actually used for the secondary in the case of SB2
phot_g_n_obs integer meta.number Total number of G photometry measurements considered
phot_g_n_good_obs integer meta.number Total number of G photometry measurements 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 (column-major ordered)
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
conf_spectro_period float stat.probability The probability of the period for not being due to (gaussian white) noise. Relevant for SB1, SB1C, SB2 and SB2C models. To be ignored otherwise.
r_pole_sum double phys.size.radius Sum of the polar radii of primary and secondary (in units of the semi-major axis)
r_l1_point_sum double phys.size.radius L1-pointing radii of primary and secondary (in units of the semi-major axis)
r_spher_sum double phys.size.radius Sum of the radii of sphere having the same volume as the primary and secondary (in units of the semi-major axis
ecl_time_primary double time.crossing d Time of mid-eclipse of the primary by the secondary
ecl_time_secondary double time.crossing d Time of mid-eclipse of the secondary by the primary
ecl_dur_primary double time.duration d Duration of primary eclipse assuming spherical components
ecl_dur_secondary double time.duration d Duration of secondary eclipse assuming spherical components
g_luminosity_ratio double phys.luminosity
arith.ratio
Ratio of the G-band luminosity of the secondary over the primary
input_period_error float stat.error
time.period
d Standard error of the period taken from VariEclipsingBinary.frequencyError
g_rank double stat.fit.param Rank of the G-band solution
astrometric_jitter double stat.value mas Uncorrelated astrometric jitter term