Contains an entry for every star in the data release. Relays information about the combined spectrum and derived quantities for each DR star, in particular, radial velocity values, stellar atmospheric parameters, and individual element abundances as determined from ASPCAP analysis.

Required Data Table Columns
NameTypeUnitsDescription
APSTAR_IDchar[45] Unique apStar identifier: apogee.[ns].[sc].APSTAR_VERS.LOC.STAR, where [ns] is for APOGEE North/South, [sc] is for survey/commissioning
TARGET_IDchar[48]
ASPCAP_IDchar[48] Unique ASPCAP identifier: apogee.[ns].[sc].RESULTS_VERS.LOC.STAR
FILEchar[34] apStar file name
APOGEE_IDchar[18] TMASS-STYLE object name
TELESCOPEchar[8] String representation of of telescope used for observation (apo25m, lco25m, apo1m)
LOCATION_IDint16 Field Location ID
FIELDchar[16] Field name
ALT_IDchar[18] Alternate object name, if any
RAfloat64degrees Right ascension (J2000)
DECfloat64degrees Declination (J2000)
GLONfloat64degrees Galactic longitude
GLATfloat64degrees Galactic latitude
Jfloat32 2MASS J mag [bad=99]
J_ERRfloat32 Uncertainty in 2MASS J mag
Hfloat32 2MASS H mag [bad=99]
H_ERRfloat32 Uncertainty in 2MASS H mag
Kfloat32 2MASS Ks mag [bad=99]
K_ERRfloat32 Uncertainty in 2MASS Ks mag
SRC_Hchar[12] Source of H-Band photometry for targeting
WASH_Mfloat32 Washington M mag
WASH_M_ERRfloat32 Washington M mag error
WASH_T2float32 Washington T2 mag
WASH_T2_ERRfloat32 Washington T2 mag error
DDO51float32 DDO 51 mag
DDO51_ERRfloat32 DDO 51 mag error
IRAC_3_6float32 IRAC 3.6micron mag
IRAC_3_6_ERRfloat32 IRAC 3.6micron mag error
IRAC_4_5float32 IRAC 4.5micron mag
IRAC_4_5_ERRfloat32 IRAC 4.5micron mag error
IRAC_5_8float32 IRAC 5.8 micron mag
IRAC_5_8_ERRfloat32 IRAC 5.8 micron mag error
IRAC_8_0float32 IRAC 8.0 micron mag
IRAC_8_0_ERRfloat32 IRAC 8.0 micron mag error
WISE_4_5float32 WISE 4.5 micron mag
WISE_4_5_ERRfloat32 WISE 4.5 micron mag error
TARG_4_5float32 4.5 micron mag adopted for dereddening for targeting
TARG_4_5_ERRfloat32 4.5 micron mag adopted for dereddening for targeting, error
WASH_DDO51_GIANT_FLAGint16 Flagged as a giant for targeting purposes based on Washington/DDO 51 photometry
WASH_DDO51_STAR_FLAGint16 Flagged as a starfor targeting purposes based on Washington/DDO 51 photometry
TARG_PMRAfloat32 RA proper motion used for targeting
TARG_PMDECfloat32 DEC proper motion used for targeting
TARG_PMSRCfloat32 Source of proper motion used for targeting
AK_TARGfloat32 K-band extinction adopted for targetting
AK_TARG_METHODchar[17] Method used to get targetting extinction
AK_WISEfloat32 WISE all-sky K-band extinction
SFD_EBVfloat32 SFD reddening
APOGEE_TARGET1int32 Bitwise OR of first APOGEE-1 target flag of all visits, see bitmask definitions.
APOGEE_TARGET2int32 Bitwise OR of second APOGEE-1 target flag of all visits, see bitmask definitions
APOGEE2_TARGET1int32 Bitwise OR of first APOGEE-2 target flag of all visits, see bitmask definitions.
APOGEE2_TARGET2int32 Bitwise OR of second APOGEE-2 target flag of all visits, see bitmask definitions
APOGEE2_TARGET3int32 Bitwise OR of third APOGEE-2 target flag of all visits, see bitmask definitions
APOGEE2_TARGET4int32 Bitwise OR of fourth APOGEE-2 target flag of all visits, see bitmask definitions
TARGFLAGSchar[116] Verbose/text form of APOGEE-1 target flags
SURVEYchar[35] Survey-associated with object: apogee, apo1m, apogee-marvels, apogee2, apogee2-manga, manga-apogee2
PROGRAMNAMEchar[18] Program name associated with object, when available
NINSTint32Unused
NVISITSint32 Number of visits into combined spectrum
COMBTYPEint32 Gives type of RV combination used
COMMISSint16 Set to 1 for APOGEE-1 Commissioning data (before July 2011), else 0
SNRfloat32 S/N estimate
SNREVfloat32 Revised S/N estimate (avoiding persistence issues)
ALL_VISITSchar[737] List of ALL visits, including ones judged as bad
STARFLAGint32 Flag for star condition taken from bitwise OR of individual visits, see bitmask definitions
STARFLAGSchar[129] Verbose/text form of STARFLAG
ANDFLAGint32 Flag for star condition taken from bitwise AND of individual visits, see bitmask definitions
ANDFLAGSchar[59] Verbose/text form of ANDFLAG
VHELIO_AVGfloat32km/s Average solar system barycentric radial velocity, weighted by S/N, using RVs determined from cross-correlation of individual spectra with combined spectrum
VSCATTERfloat32km/s Scatter of individual visit RVs around average
VERRfloat32km/sUncertainty in VHELIO_AVG from the S/N-weighted individual RVs
VERR_MEDfloat32km/s Median of individual visit RV errors
RV_TEFFfloat32KTeff of best-fit synthetic spectrum from RV fit (NOT ASPCAP!)
RV_LOGGfloat32log (cgs) log g of best-fit synthetic spectrum from RV fit (NOT ASPCAP!)
RV_FEHfloat32 [Fe/H] of best-fit synthetic spectrum from RV fit (NOT ASPCAP!)
RV_ALPHAfloat32 [alpha/M] of best-fit synthetic spectrum from RV fit (NOT ASPCAP!)
RV_CARBfloat32 [C/M] of best-fit synthetic spectrum from RV fit (NOT ASPCAP!)
RV_CCFWHMfloat32km/s FWHM of cross-correlation peak from combined vs best-match synthetic spectrum
RV_AUTOFWHMfloat32km/s FWHM of auto-correlation of best-match synthetic spectrum
RV_FLAGint64 bitmask for RV determination
N_COMPONENTSint64 Number of components identified from RV cross-correlations
MEANFIBfloat32 Mean fiber number of the set of observations
SIGFIBfloat32 Dispersion in fiber number
MIN_H Bright H limit for target selection for this object
MAX_H Faint H limit for target selection for this object
MIN_JK Blue (J-K) limit for target selection for this object
MAX_JK Red (J-K) limit for target selection for this object
GAIAEDR3_SOURCE_IDint64 GAIA source ID from GAIA EDR3
GAIAEDR3_PARALLAXfloat64 mas GAIA parallax from GAIA EDR3
GAIAEDR3_PARALLAX_ERRORfloat64 mas GAIA parallax uncertainty GAIA EDR3
GAIAEDR3_PMRAfloat64 mas/yr GAIA proper motion in RA from GAIA EDR3
GAIAEDR3_PMRA_ERRORfloat64 mas/yr GAIA uncertainty in proper motion in RA from GAIA EDR3
GAIAEDR3_PMDECfloat64 mas/yr GAIA proper motion in DEC from GAIA EDR3
GAIAEDR3_PMDEC_ERRORfloat64 mas/yr GAIA uncdertainty in proper motion in DEC from GAIA EDR3
GAIAEDR3_PHOT_G_MEAN_MAGfloat32 GAIA g mag from GAIA EDR3
GAIAEDR3_PHOT_BP_MEAN_MAGfloat32 GAIA Bp mag from GAIA EDR3
GAIAEDR3_PHOT_RP_MEAN_MAGfloat32 GAIA Rp mag from GAIA EDR3
GAIAEDR3_RADIAL_VELOCITYfloat64 km/s GAIA radial velocity from GAIA EDR3
GAIAEDR3_RADIAL_VELOCITY_ERRORfloat64 km/s GAIA uncertainty in radial velocity from GAIA EDR3
GAIAEDR3_R_MED_GEOfloat64 pc GAIA Bailer-Jones GEO distance estimate r_est from GAIA EDR3
GAIAEDR3_R_LO_GEOfloat64 pc GAIA Bailer-Jones 16th GEO percentile distance r_lo from GAIA EDR3
GAIAEDR3_R_HI_GEOfloat64 pc GAIA Bailer-Jones 84th GEO percentile distance r_hi from GAIA EDR3
GAIAEDR3_R_MED_PHOTOGEOfloat64 pc GAIA Bailer-Jones PHOTOGEO distance estimate r_est from GAIA EDR3
GAIAEDR3_R_LO_PHOTOGEOfloat64 pc GAIA Bailer-Jones 16th percentile PHOTOGEO distance r_lo from GAIA EDR3
GAIAEDR3_R_HI_PHOTOGEOfloat64 pc GAIA Bailer-Jones 84th percentile PHOTOGEO distance r_hi from GAIA EDR3
ASPCAP_GRIDchar[2] ASPCAP grid of best-fitting spectrum
FPARAM_GRIDfloat[9,23] Raw FERRE parameters for each grid for which fit was performed (see GRIDS tag in HDU3 for grid names
CHI2_GRIDfloat[9,23] CHI2 for each grid for which fit was performed (see GRIDS tag in HDU3 for grid names
FPARAMfloat32[7] Output parameter array from ASPCAP stellar parameters fit, in order given in PARAM_SYMBOL array in HDU3: Teff, logg, vmicro, [M/H], [C/M], [N/M], [alpha/M], vsini/vmacro
FPARAM_COVfloat32[49] Covariance of fitted parameters from FERRE
ASPCAP_CHI2float32 Chi^2 from ASPCAP fit
PARAMfloat32[7] Empirically calibrated parameter array, using ASPCAP stellar parameters fit + calibrations, in order given in PARAM_SYMBOL array in HDU3: Teff, logg, vmicro, [M/H], [C/M], [N/M], [alpha/M], vsini/vmacro
PARAM_COVfloat32[49] Covariance of calibrated parameters, but with only diagonal elements from "external" uncertainty estimation
PARAMFLAGint32[7] Individual parameter flag for ASPCAP analysis, see bitmask definitions
ASPCAPFLAGint32 Flag for ASPCAP analysis, see bitmask definitions
ASPCAPFLAGSchar[114] Verbose/text form ASPCAPFLAG
FRAC_BADPIXfloat32 Fraction of bad pixels in spectrum
FRAC_LOWSNRfloat32 Fraction of low S/N pixels in spectrum
FRAC_SIGSKYfloat32 Fraction of SIG_SKYLINE pixels in spectrum
FELEMfloat32[26] Output individual element array from ASPCAP stellar abundances fit, in order given in ELEM_SYMBOL array in HDU3
FELEM_ERRfloat32[26] Uncertainty from FERRE in individual element abundances
X_Hfloat32[26] Empirically calibrated individual element array, using ASPCAP stellar abundances fit + calibrations, all expressed in logarithmic abundance relative to H ([X/H]), in order given in ELEM_SYMBOL array in HDU3
X_H_ERRfloat32[26] Empirical uncertainties in [X/H], derived from repeat observations of stars
X_Mfloat32[26] Empirically calibrated individual element array, using ASPCAP stellar abundances fit + calibrations, all expressed in logarithmic abundance relative to M ([X/M]) in order given in ELEM_SYMBOL array in HDU3
X_M_ERRfloat32[26] Empirical uncertainties in [X/M], derived from repeat observations of stars
ELEM_CHI2float32[26] Chi^2 from ASPCAP fit of individual abundances
ELEMFLAGint32[26] Flags for analysis of individual abundances, see bitmask definitions
EXTRATARGint32 Bitmask which identifies main survey targets and other classes, see bitmask definitions.
TEFFfloat32KTeff from ASPCAP analysis of combined spectrum (from PARAM)
TEFF_ERRfloat32KTeff uncertainty (from PARAM_COV)
LOGGfloat32log (cgs) log g from ASPCAP analysis of combined spectrum (from PARAM)
LOGG_ERRfloat32log (cgs) log g uncertainty (from PARAM_COV)
VMICROfloat32(cgs) microturbulent velocity (fit for dwarfs, f(log g) for giants)
VMACROfloat32(cgs) macroturbulent velocity (f(log Teff, [M/H]) for giants)
M_Hfloat32dex [Z/H] from ASPCAP analysis of combined spectrum (from PARAM)
M_H_ERRfloat32dex[Z/H] uncertainty (from PARAM_COV)
ALPHA_Mfloat32dex [alpha/M] from ASPCAP analysis of combined spectrum (from PARAM)
ALPHA_M_ERRfloat32dex[alpha/M] uncertainty (from PARAM_COV)
VSINIfloat32(cgs) rotational+macroturbulent velocity (fit for dwarfs)
TEFF_SPECfloat32 K ASPCAP spectroscopic Teff (duplicated from FPARAM[0] for convenience)
LOGG_SPECfloat32 log (cgs) ASPCAP spectroscopic surface gravity (duplicated from FPARAM[1] for convenience)
C_FEfloat32dex [C/Fe] from ASPCAP analysis of combined spectrum (from X_M)
C_FE_ERRfloat32dex [C/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
CI_FE_FLAGfloat32dex [CI/Fe] flag
CI_FEfloat32dex [CI/Fe] from ASPCAP analysis of combined spectrum (from X_M)
CI_FE_ERRfloat32dex [CI/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
C_FE_FLAGfloat32dex [C/Fe] flag
N_FEfloat32dex [N/Fe] from ASPCAP analysis of combined spectrum (from X_M)
N_FE_ERRfloat32dex [N/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
N_FE_FLAGfloat32dex [N/Fe] flag
O_FEfloat32dex [O/Fe] from ASPCAP analysis of combined spectrum (from X_M)
O_FE_ERRfloat32dex [O/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
O_FE_FLAGfloat32dex [O/Fe] flag
NA_FEfloat32dex [Na/Fe] from ASPCAP analysis of combined spectrum (from X_M)
NA_FE_ERRfloat32dex [Na/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
NA_FE_FLAGfloat32dex [Na/Fe] flag
MG_FEfloat32dex [Mg/Fe] from ASPCAP analysis of combined spectrum (from X_M)
MG_FE_ERRfloat32dex [Mg/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
MG_FE_FLAGfloat32dex [Mg/Fe] flag
AL_FEfloat32dex [Al/Fe] from ASPCAP analysis of combined spectrum (from X_M)
AL_FE_ERRfloat32dex [Al/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
AL_FE_FLAGfloat32dex [Al/Fe] flag
SI_FEfloat32dex [Si/Fe] from ASPCAP analysis of combined spectrum (from X_M)
SI_FE_ERRfloat32dex [Si/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
SI_FE_FLAGfloat32dex [Si/Fe] flag
P_FEfloat32dex [P/Fe] from ASPCAP analysis of combined spectrum (from X_M)
P_FE_ERRfloat32dex [P/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
P_FE_FLAGfloat32dex [P/Fe] flag
S_FEfloat32dex [S/Fe] from ASPCAP analysis of combined spectrum (from X_M)
S_FE_ERRfloat32dex [S/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
S_FE_FLAGfloat32dex [S/Fe] flag
K_FEfloat32dex [K/Fe] from ASPCAP analysis of combined spectrum (from X_M)
K_FE_ERRfloat32dex [K/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
K_FE_FLAGfloat32dex [K/Fe] flag
CA_FEfloat32dex [Ca/Fe] from ASPCAP analysis of combined spectrum (from X_M)
CA_FE_ERRfloat32dex [Ca/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
CA_FE_FLAGfloat32dex [Ca/Fe] flag
TI_FEfloat32dex [Ti/Fe] from ASPCAP analysis of combined spectrum (from X_M)
TI_FE_ERRfloat32dex [Ti/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
TI_FE_FLAGfloat32dex [Ti/Fe] flag
TIII_FEfloat32dex [TiII/Fe] from ASPCAP analysis of combined spectrum (from X_M)
TIII_FE_ERRfloat32dex [TiII/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
TIII_FE_FLAGfloat32dex [TiII/Fe] flag
V_FEfloat32dex [V/Fe] from ASPCAP analysis of combined spectrum (from X_M)
V_FE_ERRfloat32dex [V/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
V_FE_FLAGfloat32dex [V/Fe] flag
CR_FEfloat32dex [Cr/Fe] from ASPCAP analysis of combined spectrum (from X_M)
CR_FE_ERRfloat32dex [Cr/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
CR_FE_FLAGfloat32dex [Cr/Fe] flag
MN_FEfloat32dex [Mn/Fe] from ASPCAP analysis of combined spectrum (from X_M)
MN_FE_ERRfloat32dex [Mn/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
MN_FE_FLAGfloat32dex [Mn/Fe] flag
FE_Hfloat32dex [Fe/H] from ASPCAP analysis of combined spectrum (from X_M)
FE_H_ERRfloat32dex [Fe/H] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
FE_H_FLAGfloat32dex [Fe/H] flag
CO_FEfloat32dex [Co/Fe] from ASPCAP analysis of combined spectrum (from X_M)
CO_FE_ERRfloat32dex [Co/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
CO_FE_FLAGfloat32dex [Co/Fe] flag
NI_FEfloat32dex [Ni/Fe] from ASPCAP analysis of combined spectrum (from X_M)
NI_FE_ERRfloat32dex [Ni/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
NI_FE_FLAGfloat32dex [Ni/Fe] flag
CU_FEfloat32dex [Cu/Fe] from ASPCAP analysis of combined spectrum (from X_M)
CU_FE_ERRfloat32dex [Cu/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
CU_FE_FLAGfloat32dex [Cu/Fe] flag
GE_FEfloat32dex [Ge/Fe] from ASPCAP analysis of combined spectrum (from X_M)
GE_FE_ERRfloat32dex [Ge/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
GE_FE_FLAGfloat32dex [Ge/Fe] flag
RB_FEfloat32dex [Rb/Fe] from ASPCAP analysis of combined spectrum (from X_M)
RB_FE_ERRfloat32dex [Rb/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
RB_FE_FLAGfloat32dex [Rb/Fe] flag
YB_FEfloat32dex [Y/Fe] from ASPCAP analysis of combined spectrum (from X_M)
YB_FE_ERRfloat32dex [Y/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
YB_FE_FLAGfloat32dex [Y/Fe] flag
ND_FEfloat32dex [Nd/Fe] from ASPCAP analysis of combined spectrum (from X_M)
ND_FE_ERRfloat32dex [Nd/Fe] uncertainty from ASPCAP analysis of combined spectrum (from X_M)
ND_FE_FLAGfloat32dex [Nd/Fe] flag
VISITSchar[665] List of visits going into combined spectrum
ALL_VISIT_PKint32[50] Index of visits (all visits, including ones judged as bad) in allVisit file
VISIT_PKint32[50] Index of visits (used in combined spectrum) in allVisit file
APSTAR_VERSIONchar[5] APSTAR release version
ASPCAP_VERSIONchar[10] ASPCAP release version
RESULTS_VERSIONchar[8] RESULTS release version