J/ApJS/273/19ivo://CDS.VizieR/J/ApJS/273/19doi:10.26093/cds/vizier.22730019CDSZhang M.Xiang M.Ting Y.-S.Wang J.Li H.Zou HuNie J.Mou L.,Wu T.Wu Y.Liu J.2025-07-18T20:15:24Z2025-02-04T13:22:59ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frvisible-astronomyspectroscopychemical-abundancessurveysmilky-way-galaxyStellar abundances for a large number of stars provide key information for the study of Galactic formation history. Large spectroscopic surveys such as the Dark Energy Spectroscopic Instrument (DESI) and LAMOST take median-to-low-resolution (R<~5000) spectra in the full optical wavelength range for millions of stars. However, the line-blending effect in these spectra causes great challenges for elemental abundance determination. Here we employ DD-Payne, a data-driven method regularized by differential spectra from stellar physical models, to the DESI early data release spectra for stellar abundance determination. Our implementation delivers 15 labels, including effective temperature Teff, surface gravity logg, microturbulence velocity v_mic_, and the abundances for 12 individual elements, namely C, N, O, Mg, Al, Si, Ca, Ti, Cr, Mn, Fe, and Ni. Given a spectral signal-to-noise ratio of 100 per pixel, the internal precisions of the label estimates are about 20K for Teff, 0.05dex for logg, and 0.05dex for most elemental abundances. These results agree with the theoretical limits from the Cramer-Rao bound calculation within a factor of 2. The majority of the accreted halo stars contributed by the Gaia-Enceladus-Sausage are discernible from the disk and in situ halo populations in the resultant [Mg/Fe]-[Fe/H] and [Al/Fe]-[Fe/H] abundance spaces. We also provide distance and orbital parameters for the sample stars, which spread over a distance out to ~100kpc. The DESI sample has a significantly higher fraction of distant (or metal- poor) stars than the other existing spectroscopic surveys, making it a powerful data set for studying the Galactic outskirts.2024ApJS..273...19Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/273/19CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : 2MASS All-Sky Extended Source Catalog (XSC) (IPAC/UMass, 2003-2006)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)III/286 : APOGEE-2 DR17 final allStar catalog (Abdurro'uf+, 2022)VII/292 : DESI Legacy Imaging Surveys DR8 photometric redshifts (Duncan, 2022)J/A+A/497/497 : Physical param. from JHK flux (Gonzalez-Hernandez+, 2009)J/ApJ/808/16 : Cannon: a new approach to determine abundances (Ness+, 2015)J/ApJ/836/5 : Abundances of LAMOST giants from APOGEE DR12 (Ho+, 2017)J/ApJS/245/34 : Abund. for 6 million stars from LAMOST DR5 (Xiang+, 2019)J/MNRAS/493/5195 : Milky Way halo stars ages and kinematics (Das+, 2020)J/ApJ/891/23 : Stellar abundances from LAMOST MRS (SPCAnet) (Wang+, 2020)J/ApJS/246/9 : Stellar parameters of LAMOST stars using SLAM (Zhang+, 2020)J/other/NatAs/5.640 : Chronologically dating early assembly (Montalban+, 2021)J/A+A/649/A3 : Gaia EDR3 photometric passbands (Riello+, 2021)J/ApJS/253/22 : Ks abs. magnitudes from LAMOST for OB stars (Xiang+, 2021)J/MNRAS/513/1557 : Accreted halo stars abundances (Carrillo+, 2022)J/ApJ/931/147 : Very metal-poor stars with LAMOST & Subaru. II. (Li+, 2022)J/A+A/666/A121 : Cluster target Giraffe HR15N RV precision (Randich+, 2022)J/other/Nat/603.599 : 247014 subgiant stars data (Xiang+, 2022)J/A+A/662/A66 : Hot stars from LAMOST DR6 (Xiang+, 2022)J/ApJS/267/18 : Abundance measurements in M15 RGB stars (Sandford+, 2023)http://www.legacysurvey.org/ : DESI Legacy Imaging Surveys homepagehttp://data.desi.lbl.gov/doc/ : DESI data homepagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/273/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/273/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/273/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/273/19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/273/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/273/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/273/19/catalog (Catalog of atmospheric parameters and elemental abundances for stars in the early data release of the DESI spectroscopic survey (from erratum published in 2024, ApJS, 274, 21))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/273/19/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/273/19/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/273/19/catalog?GETtext/xml+votable180.050000true22.949346230.61329560.0055555555555555564/351 369 372-373 477 572 650 698 1106 1622 1642 1749 5/226 232 234 513 518 524 538-539 560-561 677 1024 1061 1063 1171 1174 1180-1181 1192 1194 1239 1243-1246 1255 1259 1261-1262 1264-1266 1303 1309 1319 1323 1326 1329-1330 1403 1408-1410 1415 1426-1427 1429-1431 1485 1497 1500-1501 1563 1565 1585 1597 1599-1601 1603 1608 1633 1636 1640 1669-1671 1676-1677 1685 1703 1713-1715 1718 1728-1730 1755 1854-1855 1885-1887 1891 1897 1901-1903 1907 1913 1916-1917 1950-1951 1985 1988 2007 2012 2014-2015 2035-2036 2038 2117 2128 2134 2140 2146 2152 2181 2192 2221 2232 2234 2286-2287 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12112-12114 12117 12119 12128-12129 12148-12149 12170-12171 12182-12183 12185-12187 12192-12194 12197-12199 12201-12203 12212-12214 12216-12218 12220 12226 12232 12234 12256 14858-14859 14884 14886 14892 15338-15339 15930-15931 15934 16005-16007 16012-16013 16020-16022 16024-16025 16046-16047 16061-16063 16297-16299 16312 16314 17495 17501 17503 17525 17666-17667 17676-17678 17684 17686-17687 17716 17728 17730-17731 17740 17742-17743 17754 17760-17761 17763 17772-17773 17775 17784-17785 17801 17804-17805 17853-17855 17902 18197 18244 18246 19534-19535 19553 19555 19561 19564-19565 19567-19568 19570 19576 19578 20290-20291 20294-20295 20320-20321 20324-20325 20357-20359 20374 20380 20707 20710-20711 20713 20715 20728 20730 21057 21072 21074-21075 21084 21086 21104-21105 21367 21373 21838-21839 21850 21868-21869 21871 21880-21882 22052 22054-22055 22145 22148 22483 22489 22491 22517-22519 22524-22525 22527 22729 22731 22744 22746 22753 22755 22768 22770 22915 22918-22919 22936 22938 22945 22960 25590-25591 25593 25595 25909 25911 25913-25915 25926-25927 25929-25931 25938 25974 25980 25982 26000-26001 26003 26012-26013 26030-26031 26039 26042 26045 26047 26053 26064-26065 26068 26082-26083 26086 26122-26123 26152 26183 26189 26191 26194-26195 26204 26206 26213 26224-26225 26228 26249-26252 26254-26255 26288 26290 26296 26369 26371 26379 26392-26394 26401 26403 26409 26411 26416 26418 26424 26432-26433 26436-26437 26505 26508-26509 26512 26514 26520 26606-26607 26618-26619 26863 26874-26875 26949 26951 26956-26957 26959 26972-26974 26992-26993 27133 27135 27220 27222 27228 27238-27239 27250-27251 27260 27262 27278-27279 27297 27299 27312 27314 27320 27322 27333 27348 27350 27419 27422-27423 27441 27443 27452-27453 27455 27466 27500 27502 27541 27543 27588 27590 27656 27810-27811 27814 27820 27822 27969 27971 27977 28027 28030-28031 28120-28121 28123 28145 28147 28153 28156-28157 28160-28161 28163-28164 28466-28467 28507 28510-28511 28514 28520 28536-28537 28539-28542 28561 28564 28583 28594 31399 31405 31407 31410-31411 31414 31678-31679 31722 32431 32442-32443 32629 32631 32637 34699 34702-34703 34721-34723 34729 34732-34734 34736 34738 34744 36792 36794-36795 38769-38771 38774-38775 38855 38865-38868 38884-38885 38896-38897 40859 40862-40863 40881 40883 40889 40928 40930 40936 40957-40959 44996 44998-44999https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/273/19?format=asciiOpticaldefaultJ/ApJS/273/19/catalogCatalog of atmospheric parameters and elemental abundances for stars in the early data release of the DESI spectroscopic survey (from erratum published in 2024, ApJS, 274, 21)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Target right ascension (J2000) (TARGET_RA)degpos.eq.ra;meta.mainindexedDEJ2000[-31.6/85] Target declination (J2000) (TARGET_DEC)degpos.eq.dec;meta.mainindexedIDDESI target identifier (TARGET_ID)meta.id;meta.mainSurveyName of the DESI survey (SURVEY)meta.idcharProgName of the program (PROGRAM)meta.id;obscharPrim[FT] Primary, false or true (PRIMARY)meta.codecharHpix[683/45007] Healpix ID (HEALPIX)meta.idintsnrB[-6.3/473.2] Median spectral signal-to-noise ratio in B-band (SNRB)stat.snr;stat.median;em.opt.BfloatsnrG[-0.3/608] Median spectral signal-to-noise ratio in G-band (SNRG)stat.snr;stat.median;em.optfloatsnrR[0.2/771] Median spectral signal-to-noise ratio in R-band (SNRR)stat.snr;stat.median;em.opt.RfloatRV[-1500/1500] Radial velocity from DESI EDR catalog (RV)km/sphys.veloc;pos.heliocentricdoublee_RV[0.0001/2341] RV uncertainty (RV_ERR)km/sstat.error;phys.veloc;pos.heliocentricdoubleTeff[2642/8863]? Effective temperature (TEFF)Kphys.temperature.effectivefloatnullablee_Teff[2.7/1220]? Teff uncertainty (TEFF_ERR)Kstat.error;phys.temperature.effectivefloatnullablelogg[-1.5/7.2]? Log of surface gravity (LOGG)log(cm.s**-2)phys.gravitydoublenullablee_logg[0.01/3.1]? logg uncertainty (LOGG_ERR)log(cm.s**-2)stat.error;phys.gravityfloatnullable[Fe/H][-5.2/1.7]? Iron abundance (FEH)phys.abund.Fedoublenullablee_[Fe/H][0.007/1.4]? [Fe/H] Uncertainty (FEH_ERR)stat.error;phys.abund.Fefloatnullable[C/Fe][-1.4/2.1]? Log of C/Fe abundance (C_FE)phys.abunddoublenullablee_[C/Fe][0.004/1.8]? [C/Fe] Uncertainty (C_FE_ERR)stat.error;phys.abundfloatnullable[N/Fe][-1.9/2.2]? Log of N/Fe abundance (N_FE)phys.abunddoublenullablee_[N/Fe][0.009/3]? [N/Fe] Uncertainty (N_FE_ERR)stat.error;phys.abundfloatnullable[Mg/Fe][-0.8/1.4]? Log of Mg/Fe abundance (MG_FE)phys.abunddoublenullablee_[Mg/Fe][0.005/3]? [Mg/Fe] Uncertainty (MG_FE_ERR)stat.error;phys.abundfloatnullable[O/Fe][-0.8/1.6]? Log of O/Fe abundance (O_FE)phys.abunddoublenullablee_[O/Fe][0.006/2]? [O/Fe] Uncertainty (O_FE_ERR)stat.error;phys.abundfloatnullable[Al/Fe][-1.3/1.5]? Log of Al/Fe abundance (AL_FE)phys.abunddoublenullablee_[Al/Fe][0.01/2.5]? [Al/Fe] Uncertainty (AL_FE_ERR)stat.error;phys.abundfloatnullable[Si/Fe][-0.9/1.4]? Log of Si/Fe abundance (SI_FE)phys.abunddoublenullablee_[Si/Fe][0.007/2.1]? [Si/Fe] Uncertainty (SI_FE_ERR)stat.error;phys.abundfloatnullable[Ca/Fe][-0.9/1.4]? Log of Ca/Fe abundance (CA_FE)phys.abunddoublenullablee_[Ca/Fe][0.006/2]? [Ca/Fe] Uncertainty (CA_FE_ERR)stat.error;phys.abundfloatnullable[Ti/Fe][-1.2/1.5]? Log of Ti/Fe abundance (TI_FE)phys.abunddoublenullablee_[Ti/Fe][0.006/1.5]? [Ti/Fe] Uncertainty (TI_FE_ERR)stat.error;phys.abundfloatnullable[Cr/Fe][-1.9/1]? Log of Cr/Fe abundance (CR_FE)phys.abunddoublenullablee_[Cr/Fe][0.009/3.6]? [Cr/Fe] Uncertainty (CR_FE_ERR)stat.error;phys.abundfloatnullable[Mn/Fe][-1.4/0.9]? Log of Mn/Fe abundance (MN_FE)phys.abunddoublenullablee_[Mn/Fe][0.008/3.2]? [Mn/Fe] Uncertainty (MN_FE_ERR)stat.error;phys.abundfloatnullable[Ni/Fe][-0.9/1.1]? Log of Ni/Fe abundance (NI_FE)phys.abunddoublenullablee_[Ni/Fe][0.008/3.1]? [Ni/Fe] Uncertainty (NI_FE_ERR)stat.error;phys.abundfloatnullableVmic[-0.63/3.13]? Microturbulent velocity (VMIC)km/sphys.veloc.microTurbdoublenullablee_Vmic[0.009/3.4]? Vmic uncertainty (VMIC_ERR)km/sstat.error;phys.veloc.microTurbfloatnullableCorTeff-logg[-1/0.87] The correlation coefficients between Teff and logg (COR_TEFF_LOGG)stat.correlation;phys.temperature.effective;phys.gravityfloatCorTeff-feh[-1/0.81] The correlation coefficients between Teff and [Fe/H] (COR_TEFF_FEH)stat.correlation;phys.temperature.effective;phys.abund.FefloatCorlogg-feh[-1/0.72] The correlation coefficients between logg and [Fe/H] (COR_LOGG_FEH)stat.correlation;phys.gravity;phys.abund.Fefloatq_Chi2[-3.2/3.9e+6]? A quality flag describing the {chi}^2^ of the spectral fit (CHISQ_FLAG)meta.code.qualdoublenullableChi2[0.009/773000]? The {chi}^2^ of the spectral fit (CHISQ)stat.fit.chi2doublenullableVR