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Table A.1

Description of the catalogue of 12 760 successfully analysed binary stars, available in electronic form at the CDS.

Column Unit Description
sobject_id Unique per-observation star ID (spectrum ID)
star_id 2MASS ID number by default, UCAC4 ID number if 2MASS unavailable (begins with UCAC4-)
gaia_id Gaia DR2 identifier
field_id GALAH field identification number
raj2000 deg Right ascension from 2MASS, J2000
dej2000 deg Declination from 2MASS, J2000
Bmag mag B magnitude from APASS
e_Bmag mag Uncertainty of Bmag
Vmag mag V magnitude from APASS
e_Vmag mag Uncertainty of Vmag
GBPmag mag GBP magnitude from Gaia DR2
e_GBPmag mag Uncertainty of GBPmag
Gmag mag G magnitude from Gaia DR2
e_Gmag mag Uncertainty of Gmag
GRPmag mag GRP magnitude from Gaia DR2
e_GRPmag mag Uncertainty of GRPmag
Jmag mag J magnitude from 2MASS
e_Jmag mag Uncertainty of Jmag
Hmag mag H magnitude from 2MASS
e_Hmag mag Uncertainty of Hmag
Kmag mag Ks magnitude from 2MASS
e_Kmag mag Uncertainty of Kmag
W1mag mag W1 magnitude from WISE
e_W1mag mag Uncertainty of W1mag
W2mag mag W2 magnitude from WISE
e_W2mag mag Uncertainty of W2mag
parallax mas Parallax from Gaia DR2
e_parallax mas Uncertainty of parallax
sn_c1 S/N per pixel in the HERMES blue channel (GALAH spectral band 1)
sn_c2 S/N per pixel in the HERMES green channel (GALAH spectral band 2)
sn_c3 S/N per pixel in the HERMES red channel (GALAH spectral band 3)
sn_c4 S/N per pixel in the HERMES IR channel (GALAH spectral band 4)
flag_cannon Flags for spectrum information in a bitmask format (see Buder et al. 2018)
teff1 K Effective temperature – primary component
teff2 K Effective temperature – secondary component
log g1 dex Surface gravity – primary component
log g2 dex Surface gravity – secondary component
feh dex Iron abundance ([Fe/H])
V1 km s−1 RV – primary component
V2 km s−1 RV – secondary component
ratio1 Ratio of spectral flux in GALAH band 1 (secondary/primary)
ratio2 Ratio of spectral flux in GALAH band 2 (secondary/primary)
ratio3 Ratio of spectral flux in GALAH band 3 (secondary/primary)
ratio4 Ratio of spectral flux in GALAH band 4 (secondary/primary)
vmic1 km s−1 Microturbulence velocity – primary component
vmic2 km s−1 Microturbulence velocity – secondary component
vsini1 km s−1 Line broadening – primary component
vsini2 km s−1 Line broadening – secondary component
reddening Interstellar reddening
r1 R Stellar radius – primary component
r2 R Stellar radius – secondary component
chi2_binary_pipeline , see Sect. 3.2
chi2_binary_pipeline_spec (see Sect. 3.2)
chi2_binary_pipeline_phot (see Sect. 3.2)
ruwe Renormalised unit weight error (RUWE, Gaia DR2)

Notes. The columns in this table that list direct products of the binary pipeline (from teff1 to r2) are placeholders for actual columns in the catalogue, where each placeholder contains five columns to report the 16th, 50th, and 84th percentile along withe the mean and mode of the posterior distributions (e.g. teff1_16, teff1_50, teff1_84, teff1_mean, and teff1_mode for the effective temperature of the primary component, see Sect. 3.2.4 for more details).

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