Open Access
Table 6
Descriptions for the stellar label catalog of LAMOST DR6 hot stars.
| Field | Description |
|---|---|
| Specid | LAMOST spectra ID in the format of “date-planid-spid-fiberid” |
| Ra | Right ascension from the LAMOST DR6 catalog (J2000; deg) |
| Dec | Declination from the LAMOST DR6 catalog (J2000; deg) |
| Uniqflag | Flag to indicate repeat visits; uniqflag = 1 means unique star, uniqflag = 2, 3,n indicates the nth repeat visit |
| For stars with repeat visits, the uniqflag is sorted by the spectral S/N, with uqflag = 1 having the highest S/N | |
| Star_id | A unique ID for each unique star based on its RA and Dec, in the format of “Sdddmmss ± ddmmss” |
| snr_g | Spectral signal-to-noise ratio per pixel in SDSS g-band |
| rv | Radial velocity from LAMOST fits header (kms−1) |
| rv_err | Uncertainty in radial velocity (kms−1) |
| Teff | Effective temperature |
| Teff _err | Uncertainty in Teff |
| log g | Surface gravity |
| log g_err | Uncertainty in log g |
| vsin i | Projected rotation velocity |
| vsin i err | Uncertainty in vsin i |
| [Fe/H] | Iron abundance |
| [Fe/H] err | Uncertainty in [Fe/H] |
| [Si/H] | Silicon abundance |
| [Si/H] err | Uncertainty in [Si/H] |
| corr_Teff _log g | Correlation coefficient between Teff and log g, derived from the covariance array of the fit |
| corr Teff vsin i | Correlation coefficient between Teffand vsin i |
| corr_Teff _[Si/H] | Correlation coefficient between Teffand [Si/H] |
| corr_Teff _[Fe/H] | Correlation coefficient between Teffand [Fe/H] |
| corr_log g_vsin i | Correlation coefficient between log g and vsin i |
| corr_log g_[Si/H] | Correlation coefficient between log g and [Si/H] |
| corr_log g_[Fe/H] | Correlation coefficient between log g and [Fe/H] |
| corr_vsin i_[Si/H] | Correlation coefficient between vsin i and [Si/H] |
| corr_vsin i_[Fe/H] | Correlation coefficient between vsin i and [Fe/H] |
| corr_[Si/H]_[Fe/H] | Correlation coefficient between [Si/H] and [Fe/H] |
| chisq_red | Reduced χ2 (i.e., χ2/dof) of the fit |
| chi2ratio | Deviation of the chisq_red from the median value of chisq_red for stars of similar S/N and Teff, divided by the dispersion of the chisq_red |
| source_dr6oba | Target from the LAMOST classification for OBA stars? (1 = ‘YES’, 0 = ‘NO’) |
| source_Zari21 | Target from the photometry-based identification of Zari et al. (2021)? (1 = ‘YES’, 0 = ‘NO’) |
| source_Liu19 | Target from the OB star catalog of Liu et al. (2019)? (1 = ‘YES’, 0 = ‘NO’) |
| gaia_id | Source ID of Gaia eDR3, matched with the CDS-Xmatch service (Boch et al. 2012) using 3” criterion |
| parallax | Gaia eDR3 parallax |
| parallax_error | Uncertainty in parallax |
| pmra | Gaia eDR3 proper motion in RA direction |
| pmra_error | Uncertainty in pmra |
| pmdec | Gaia eDR3 proper motion in Dec direction |
| pmdec_error | Uncertainty in pmdec |
| RUWE | Gaia eDR3 RUWE |
| r_geo | Geometric distance derived from Gaia parallax by Bailer-Jones et al. (2021) |
| r_geo_low | Distance at 16th percentile of the probability distribution |
| r_geo_high | Distance at 84th percentile of the probability distribution |
| fidelity | Value of fidelity from Rybizki et al. (2022), an identifier for spurious astrometric solutions |
| ebv_bayes19 | E(B–V) interpolated from the 3D map of Green et al. (2019) using r_geo |
| ebv_pair | E(B–V) estimated using intrinsic color from synthetic spectra of HotPayne stellar parameters |
| ebv_pair_err | Uncertainty in ebv_pair |
| G/BP/RP | Gaia eDR3 magnitudes |
| J/H/K | 2MASS photometric magnitudes |
| qual_2MASS | 2MASS photometric quality flag |
| W1/W2/W3/W4 | WISE photometric magnitudes |
| qual_wise | WISE photometric quality flag |
| var_wise | WISE varibility flag |
Notes. The catalog is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/662/A66
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