VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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J/AJ/170/171
  SpecDis v2.1: Stellar distance catalog from DESI DR1 (Li+, 2025)
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2025AJ....170..171L
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1.J/AJ/170/171/specdis(c)MWS SpecDis v2.1 catalog of DESI DR1 (original column names in green) (4140838 rows)
2.J/AJ/170/171/fig1Example of coadded error spectra (Data behind Figure 1) (8300 rows)
3.J/AJ/170/171/fig2Example of principal component analysis reconstruction, for a randomly selected star (Data behind Figure 2) (3700 rows)
4.J/AJ/170/171/fig3Comparison between GMagNN and GMag for different S/N, for stars with precise Gaia parallax plx/e_plx>10 (Data behind Figure 3) (220097 rows)
5.J/AJ/170/171/fig4HR diagrams based on the full test sample (Data behind Figure 4) (786716 rows)
6.J/AJ/170/171/fig5Comparison between NN-predicted and reference distance moduli (Data behind Figure 5) (3217 rows)
7.J/AJ/170/171/fig6Comparison between NN-predicted and reference distance moduli based on all DESI Year-1 BHB stars (Data behind Figure 6) (4326 rows)
8.J/AJ/170/171/fig7Distribution of heliocentric distances of stars (Data behind Figure 7) (249 rows)
9.J/AJ/170/171/fig8Distribution of relative distance uncertainty as functions of S/N and distance (Data behind Figure 8) (4037611 rows)
10.J/AJ/170/171/fig9Median distance measurement errors obtained by MC sampling the error spectra, reported as a function of S/N (Data behind Figure 9) (100 rows)
11.J/AJ/170/171/fig10Comparison between our distance measurements and the spectrophotometric distance measurements from 6 previous studies (Data behind Figure 10) (110726 rows)
12.J/AJ/170/171/fig11External validations for the distance measurements of 5 previous studies (Data behind Figure 11) (74552 rows)
13.J/AJ/170/171/fig12Distribution of single stars and binaries in the HR diagram (Data behind Figure 12) (8000 rows)
14.J/AJ/170/171/fig13Comparison between GMagNN and GMag for single stars and binaries (Data behind Figure 13) (220814 rows)
15.J/AJ/170/171/fig14Equal-mass binary fraction reported as a function of [Fe/H], log(g), Teff, and [{alpha}/Fe] (Data behind Figure 14) (83 rows)
16.J/AJ/170/171/fig15Relationships between [Fe/H], Teff, and the first and second principal components (Data behind Figure 15) (400000 rows)
17.J/AJ/170/171/fig16Distributions of NN-predicted and derived from Gaia parallax distance moduli (Data behind Figure 16) (3217 rows)
18.J/AJ/170/171/refsReferences of the previous studies used in Figures 10 & 11 (Added by CDS) (6 rows)
19.J/AJ/170/171/sampleDescription of the external validation samples used in Figure 11 (Added by CDS) (4 rows)

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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)TargetID  DESI (V/161) source ID (TARGET_ID) (meta.id;meta.main)
  (1)GaiaDR3  (n) Gaia DR3 (I/355) source ID (SOURCE_ID) (meta.id)
  (1)RA_ICRS deg (n)(i) Gaia DR3 right ascension (ICRS) at Ep=2016.0 (RA) (pos.eq.ra;meta.main)
  (1)DE_ICRS deg (n)(i) Gaia DR3 declination (ICRS) at Ep=2016.0 (DEC) (pos.eq.dec;meta.main)
  (1)pmRA mas/yr (n) [-1195.27/1469.25] Gaia DR3 proper motion in right ascension (PMRA) (pos.eq.ra;pos.pm)
  (1)e_pmRA mas/yr (n) [5e-3/3.34] pmRA uncertainty (PMRA_ERR) (stat.error;pos.eq.ra;pos.pm)
  (1)pmDE mas/yr (n) [-1289.47/473.61] Gaia DR3 proper motion in declination (PMDEC) (pos.pm;pos.eq.dec)
  (1)e_pmDE mas/yr (n) [7e-3/3.43] pmDE uncertainty (PMDEC_ERR) (stat.error;pos.pm;pos.eq.dec)
  (1)RVel km/s [-1500/1500] Radial velocity (VRAD) (spect.dopplerVeloc)
  (1+9)Dist kpc (n) [2.2e-3/5.7e6] Heliocentric distance (DIST) (pos.distance;pos.heliocentric)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)e_Dist kpc (n) [1.1e-4/8.03e6] Dist uncertainty (DISTERR) (stat.error;pos.distance;pos.heliocentric)
  (1+4+5+14)GMagNN mag [-23.32/16.56] Neural Network (NN)-predicted Gaia G-band absolute magnitude (MG_NN) (phys.magAbs;em.opt;meta.modelled)
  (1+4+5+13+14)GMag mag (n) [-24.3/16.63] Observed Gaia G-band absolute magnitude (MG_GEO) (phys.magAbs;em.opt)
  (1+17)plx mas (n) [-15.31/279.25] Gaia DR3 parallax before zero point correction (PARALLAX) (pos.parallax)
  (1)e_plx mas (n) [7.9e-3/4.43] Parallax uncertainty (PARALLAX_ERR) (stat.error;pos.parallax)
  (1)plx-zp mas [-0.084/0.076] Zero point correction of parallax (PARALLAX_ZPC) (Note 1)   (arith.zp;arith.diff;pos.parallax)
  (1)E(B-V)  (n) [2.5e-3/0.5] Reddening estimated in this work (EBV) (phot.color;em.opt.V;em.opt.B)
  (1)AG  (n) [5.9e-3/1.49] Dust correction in Gaia G-band (A_G) (phys.absorption;em.opt.V)
  (1)RUWE  (n) [0.49/1.66] Gaia DR3 renormalized unit weight error (RUWE) (stat.error)
  (1)Solved  (n) [3/16959] Which parameters have been solved for?; Gaia DR3 ASTROMETRIC_PARAMS_SOLVED (APS) (Note 2)   (meta.number)
  (1)nueff 1/um (n) [1.12/2.1] Effective wavenumber of the source used in the astrometric solution; Gaia DR3 NU_EFF_USED_IN_ASTROMETRY (NEUIA) (em.wavenumber)
  (1)pscol 1/um (n) [-0.063/3.07] Astrometrically estimated pseudocolour of the source; Gaia DR3 PSEUDOCOLOUR (P_COLOUR) (em.wavenumber)
  (1)ELAT deg (n) Gaia DR3 ecliptic latitude (ECL_LAT) (pos.ecliptic.lat)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (1)BinFlag   [0/1] Flag of binaries; 1=single stars, 0=binaries (BINARY_FLAG) (Note 3)   (meta.code)
  (1)BinProb  (n) [-9999/8.13] Binary possibility of a star (BINARY_POSSIBILITY) , Equation 9 (meta.code)
  (1)_RA.icrs deg (n)(i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
  (1)_DE.icrs deg (n)(i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  (2+3)lambda 0.1nm [3589.2/7735.2] Wavelength in Angstroms (em.wl)
  (2)f [-] [-0.15/0.34] Log flux of error spectra after the moving average, f({lambda}) (phot.flux)
  (3)S [-] [-0.61/0.44] Log flux of stellar spectra after subtracting the mean and after logarithmic transformation, S({lambda}) (phot.flux)
  (3)Srec [-] [-0.62/0.43] Reconstructed log flux of stellar spectra based on the first 100 principal components, S({lambda})reconstructed (phot.flux;meta.modelled)
  (3)Res   [-0.31/0.35] Residuals, R({lambda}) (stat.fit.residual)
  (4+9+10)SNR   [0.53/269.48] Signal-to-noise ratio of stellar spectra (stat.snr)
  (5+13)BP-RP mag [-0.55/4.74] Gaia BP-RP color index (phot.color;em.opt.B;em.opt.R)
  (6)Seq   [0/3216] Sequential index (meta.code;spect.index)
  (6+7+12+17)DM-true mag [13.54/22.06] Reference distance modulus, (m-M)true (Note 1)   (phot.mag.distMod)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (6+7+17)DM-pred mag [6.61/24.18] Neural Network (NN)-predicted distance modulus, (m-M)predicted (phot.mag.distMod)
  (7)e_DM-pred mag (n) [0.023/5.56] Uncertainty on DMpred (stat.error;phot.mag.distMod)
  (8)b_Dist kpc [0/249] Lower limit of heliocentric distance range (stat.min;pos.distance;pos.heliocentric)
  (8)B_Dist kpc [1/250] Higher limit of heliocentric distance range (stat.max;pos.distance;pos.heliocentric)
  (8)Nfull   [0/913999] Number of stars in that distance range (meta.number)
  (8)Nerrsamp   [0/805304] Number of stars with relative distance error smaller than 25% in that distance range (meta.number)
  (9)DistErr/Dist   [0.023/3.47] Relative distance uncertainty (stat.error;arith.ratio;pos.distance)
  (10)DistErr/Dist1   [0.048/0.64] Median distance measurement error for stars with log(g)<3.8 (Note 1)   (stat.error;arith.ratio;pos.distance)
  (10)DistErr/Dist2   [0.051/0.38] Median distance measurement error for stars with log(g)>3.8 (Note 1)   (stat.error;arith.ratio;pos.distance)
  (11)DM mag (n) [2.12/28.49] Distance (modulus) measurement in this paper, (m-M)Li (phot.mag.distMod)
  (11)n_DM-Lit (char) I for infinity; i for -infinity (meta.note)
  (11+12)DM-Lit mag (n)Distance modulus measurement from previous study (phot.mag.distMod)
  (11+12)r_DM-Lit (char) Reference for DM-Lit (meta.bib)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (12)n_DM-true (char) External validation sample for DM (meta.id)
  (13+14)Bin   [0/1] Flag for binaries; 1=single stars, 0=binaries (meta.code)
  (15)Param (char) Parameter name (meta.id)
  (15)Value   [-1.96/7950] Parameter value (phys.abund.Z;phys.temperature.effective)
  (15)BinFrac   [8.3e-3/0.3] Binary fraction (stat.fit.param)
  (16)C1   [-0.99/0.077] Coefficient of the first principal component (stat.fit.param)
  (16)C2   [-0.76/0.53] Coefficient of the second principal component (stat.fit.param)
  (16)[Fe/H] [-] [-4/1.01] Metallicity (phys.abund.Z)
  (16)Teff K [2654.7/15000.03] Effective temperature (phys.temperature.effective)
  (18)Ref (char) Reference for DM-Lit, Author+year (see fig10.dat and fig11.dat) (meta.bib)
  (18)Bibcode (char) Reference bibcode (meta.bib.bibcode)
  (18)Catalog (char) Reference catalog on VizieR (meta.id;meta.dataset)
  (18)Note (char) Description and origin of measurements (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (19)Sample (char) External validation sample for DM (see fig11.dat) (meta.ref;pos.frame)
  (19)Description (char) Description of the external validation sample (meta.note)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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