Table information for 'ucdc.main'

General

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Resource Description: The Ultracool Dwarf Companion Catalogue consists of 278 multiple systems, 32 of which are newly discovered, each with at least one spectroscopically confirmed Ultracool Dwarf, within a 100 pc volume-limited sample. This catalogue is compiled using the Gaia Catalogue of Nearby Stars for stellar primaries and the Gaia Ultracool Dwarf Sample for low-mass companions and includes 241 doubles, 33 triples, and 4 higher-order systems established from positional, proper motion, and parallax constraints.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Ultracool Dwarf Companion Catalogue UCDC'

Resource Reference URL: Resource info

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference https://arxiv.org/abs/2408.07024 either in addition to or instead of the service reference.

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

@MISC{vo:ucdc_main,
  year=2024,
  title={Ultracool Dwarf Companion Catalogue {UCDC}},
  author={Baig, Sayan and Smart, R. L. and Jones, Hugh R.A. and Gagné, Jonathan and Pinfield, D.J. and Cheng, Gemma and Moranta, Leslie},
  url={http://dc.g-vo.org/tableinfo/ucdc.main},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
sys_num Cat. nr. Identifier of the system in the UCDC N/A meta.id;meta.main
num_comp #comp Total number of objects that make up the system N/A meta.number
short_name Name Short (and unique) name used in this catalogue N/A meta.id
discovery_name Disc. Name Known identifier from literature N/A meta.id.cross
bd_ref Bin. Src Binarity discovery bibcode N/A meta.bib.bibcode
source_id Source Id Unique source identifier for Gaia DR3 [Note id] N/A meta.id.cross
fpp FPP False-Positive Probability - Probability of the system being a False-Positive match N/A stat.fit.goodness
ang_sep Separation Angular Separation between companion and the ultracool dwarf arcsec pos.angDistance
projected_sep Comp. Dist Projected physical separation between companion and the ultracool dwarf AU pos.distance
plx_diff Δπ Difference in Parallax between companion and the ultracool dwarf mas pos.parallax;arith.diff
pm_diff Δμ Proper Motion difference between companion and the ultracool dwarf, absolute value mas/a pos.pm;arith.diff
pma_diff Δ(PA) Proper Motion difference between companion and the ultracool dwarf, position angle deg pos.posAng;arith.diff
ra RA Right Ascension from epoch_ref deg pos.eq.ra;meta.main
dec Dec Declination from epoch-ref deg pos.eq.dec;meta.main
epoch Pos. epooch Epoch of object position a time.epoch
epoch_ref Pos. Src. Bibcode for the source of the epoch position N/A meta.bib.bibcode;pos
parallax π Parallax taken from parallax_ref mas pos.parallax
parallax_err Err.π Error in parallax mas stat.error;pos.parallax
parallax_ref Src. π Bibcode for the source of the parallax value N/A meta.bib.bibcode;pos.parallax
pmra PM(RA) Proper motion in Right Ascension from pm_ref mas/a pos.pm;pos.eq.ra
err_pmra Err. PM(RA) Error in the proper motion in Right Ascension mas/a stat.error;pos.pm;pos.eq.ra
pmdec PM(Dec) Proper motion in Declination from pm_ref mas/a pos.pm;pos.eq.dec
err_pmdec Err. PM(Dec) Error in proper motion in Declination mas/a stat.error;pos.pm;pos.eq.dec
pm_ref Src. PM Bibcode for the source of the proper motions N/A meta.bib.bibcode;pos.pm
mag_g m_G G-band mean magnitude mag phot.mag;em.opt.V
err_mag_g Err. m_G Error in G-band mean magnitude mag stat.error;phot.mag;em.opt.V
mag_rp m_RP RP mean magnitude mag phot.mag;em.opt.R
err_mag_rp Err. m_RP Error in RP mean magnitude mag stat.error;phot.mag;em.opt.R
mag_g_rp G-RP G-RP colour mag phot.color;em.opt.V;em.opt.R
mag_j m_J 2MASS J-band mean magnitude mag phot.mag;em.ir.j
err_mag_j Err. m_J Error in 2MASS J-band mean magnitude mag stat.error;phot.mag;em.ir.j
mag_h m_H 2MASS H-band mean magnitude mag phot.mag;em.ir.h
err_mag_h Err. m_H Error in 2MASS H-band mean magnitude mag phot.mag;em.ir.h
mag_k m_K 2MASS K_s-band mean magnitude mag phot.mag;em.ir.K
err_mag_k Err. m_K Error in 2MASS K_s-band mean magnitude mag stat.error;phot.mag;em.ir.K
sptopt Spect. Opt. Optical Spectral Type from sptopt_ref N/A src.sptype
sptopt_ref Src. Spectype Opt Reference for the optical spectral type N/A meta.bib.bibcode;src.sptype
sptnir Sepct. IR Near Infrared Spectral Type from sptnir_ref N/A src.sptype
sptnir_ref Src. Spectype IR Reference for the near infrared spectral type N/A meta.bib.bibcode;src.sptype
astrometric_n_obs_al Gaia AL #Obs Total number of observations in the along the Gaia scan (AL) direction N/A meta.number
phot_g_n_obs Gaia G #Obs Number of observations contributing to G photometry N/A meta.number
phot_rp_n_obs Gaia RP #Obs Number of observations contributing to RP photometry N/A meta.number
phot_rp_n_blended_transits #RP blended Number of RP blended transits N/A meta.number
ruwe RUWE Renormalised Unit Weight Error N/A stat.error
luwe LUWE Local Unit Weight Error as per 2022MNRAS.513.5270P N/A stat.error
ipd_gof_harmonic_amplitude IPD GoF Ampl. Amplitude of the IPD GoF versus position angle of scan deg stat.value
ipd_frac_multi_peak #IPD multi-peak Percent of successful-IPD windows with more than one peak % stat.value
rv RV Radial Velocity from rv_ref km/s phys.veloc;pos.heliocentric
err_rv Err. RV Error in radial velocity km/s stat.error;phys.veloc;pos.heliocentric
rv_ref Src. RV Bibcode of the source of rv N/A meta.bib.bibcode;phys.veloc;pos.heliocentric
v_tan Tangential Tangential Velocity km/s phys.veloc.transverse
t_eff T_eff Effective temperature from t_eff_ref K phys.temperature.effective
err_t_eff_lower Err T_eff ↓ Lower error in effective temperature K stat.error;phys.temperature.effective
err_t_effupper Err T_eff ↑ Upper error in effective temperature K stat.error;phys.temperature.effective
err_t_eff_espucd Err. T_eff ESP Error in T_eff from ESP-UCD K stat.error;phys.temperature.effective
t_eff_ref Src. T_eff 1 = GSP-Phot, 2 = ESP-UCD N/A meta.bib
logg_gspphot logg Surface gravity from GSP-Phot (DR3) (Median of MCMC values) log(cm/s**2) phys.gravity
err_logg_gspphot_lower Err logg ↓ Lower error in Surface gravity log(cm/s**2) stat.error;phys.gravity
err_logg_gspphotupper Err logg ↑ Upper error in Surface gravity log(cm/s**2) stat.error;phys.gravity
mh_gspphot [Fe] Iron abundance from GSP-Phot (DR3) (Median of MCMC values, log relative to solar) N/A phys.abund.Fe
err_mh_gspphot_lower Err [Fe] ↓ Lower error in Iron abundance N/A stat.error;phys.abund.Fe
err_mh_gspphotupper Err [Fe] ↑ Upper error in Iron abundance N/A stat.error;phys.abund.Fe
luminosity L Bolometric luminosity solLum phys.luminosity
err_luminosity_lower Err L ↓ Lower error in Bolometric luminosity solLum stat.error;phys.luminosity
err_luminosityupper Err L ↑ Upper error in Bolometric luminosity solLum stat.error;phys.luminosity
mass Mass Mass of the object from mass_ref solMass phys.mass
err_mass_lower Err Mass ↓ Lower error in object mass solMass stat.error;phys.mass
err_massupper Err Mass ↑ Upper error in object mass solMass stat.error;phys.mass
mass_ref Src. Mass Mass reference: 1 = gaia FLAME, 2 = White Dwarf, 3 = BANYAN Sigma N/A meta.bib
age Age Age of the object from age_ref Gyr time.age
err_age_lower Err Age ↓ Lower error in Age of the object Gyr stat.error;time.age
err_ageupper Err Age ↑ Upper error in Age of the object Gyr stat.error;time.age
age_ref Src. Age Age reference: 1 = gaia FLAME, 2 = White Dwarf, 3 = BANYAN Sigma N/A meta.bib

Columns that are parts of indices are marked like this.

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