Datamodel: allVisit

General Description

The allVisit_RESULTS-VERS.fits file contains summary information for every visit of each star in the data release.

Naming Convention

allVisit-RESULTS_VERS.fits

Approximate Size

860 MB

File Type

FITS

Read by Products

none

Written by Products

idlwrap (aspcap_allstar)

Sections

• HDU0: Primary Header
• HDU1: Data Table for Individual Visits
• HDU2: Index to Data Table

HDU0: Primary Header

Required Header Keywords

KEY	Value	Type	Comment
DATE	2017-04-28	str	Creation UTC (CCCC-MM-DD) date of FITS header

HDU1: Summary Data for Individual Visits

Contains an entry for each individual visit to every star in the data release.

Required Data Table Columns

Name	Type	Units	Description
VISIT_ID	char[28]		Unique apVisit identifier: apogee.[ns].[sc].apred_vers.plate.mjd.fiber, where [ns] is for APOGEE north/south, and [sc] is for survey/commissioning
TARGET_ID	char[28]		Targeting identifier: combination of the LOCATION_ID and APOGEE_ID
APRED_VERSION	char[2]
APOGEE_ID	char[18]		TMASS-STYLE object name
FILE	char[34]		File name
FIBERID	int16		Fiber number
PLATE	int16		Plate ID
MJD	int32		MJD of observation
LOCATION_ID	int16		Field Location ID
RA	float64	degrees	Right ascension (J2000)
DEC	float64	degrees	Declination (J2000)
GLON	float64	degrees	Galactic longitude
GLAT	float64	degrees	Galactic latitude
J	float32		2MASS J mag
J_ERR	float32		uncertainty in 2MASS J mag
H	float32		2MASS H mag
H_ERR	float32		uncertainty in 2MASS H mag
K	float32		2MASS Ks mag
K_ERR	float32		Uncertainty in 2MASS Ks mag
RA_TARG	float64		Targeting RA
DEC_TARG	float64		Targeting DEC
APOGEE_TARGET1	int32		First APOGEE-1 Targeting Flag, see bitmask definition
APOGEE_TARGET2	int32		Second APOGEE-1 Targeting Flag, see bitmask definition
APOGEE_TARGET3	int32		Third APOGEE-1 Targeting Flag, has not been not populated
SURVEY	char[14]		Survey-associated with vist: apogee, apo1m, apogee-marvels, apogee2, apogee2-manga, manga-apogee2
TARGFLAGS	char[97]		Verbose form of targeting flags
SNR	float32		Median S/N per pixel
STARFLAG	int32		Star-level Flag, see bitmask definition
STARFLAGS	char[114]		Verbose form of STARFLAG
DATEOBS	char[23]		Date of observation
JD	float64		Julian Date of observation
BC	float32	km/s	Barycentric Correction
VTYPE	int16		Radial velocity determination method
VREL	float32	km/s	Derived radial velocity (RV)
VRELERR	float32	km/s	Error in RV
VHELIO	float32	km/s	Derived barycentric RV
VLSR	float32	km/s	Inferred VLSR
VGSR	float32		Inferred VGSR
CHISQ	float32	Chi^2 of fit
RV_TEFF	float32	K	Teff of best-matching synthetic spectrum to combined spectrum
RV_FEH	float32		[Fe/H] of best-matching synthetic spectrum to combined spectrum
RV_LOGG	float32		log g of best-matching synthetic spectrum to combined spectrum
RV_ALPHA	float32		[alpha/Fe] of best-matching synthetic spectrum to combined spectrum
RV_CARB	float32		[C/Fe] of best-matching synthetic spectrum to combined spectrum
SYNTHFILE	char[23]		Filename of library of synthetic spectra
ESTVTYPE	int16		Method for RV initial estimate
ESTVREL	float32	km/s	Initial RV estimate from single visit
ESTVRELERR	float32	km/s	Initial RV error from single visit
ESTVHELIO	float32	km/s	Initial barycentric velocity from single visit
SYNTHVREL	float32	km/s	Relative radial velocity from synthetic spectrum template matching
SYNTHVRELERR	float32	km/s	RV error of SYNTHVREL
SYNTHVHELIO	float32	km/s	Helocentric RV from SYNTHVREL
OBSVREL	float32	km/s	Relative radial velocity from observed spectrum template matching
OBSVRELERR	float32	km/s	RV error of OBSVREL
OBSVHELIO	float32	km/s	Helocentric RV from OBSVREL
FIELD	char[16]		Field name
APOGEE2_TARGET1	int32		First APOGEE-2 Targeting Flag, see bitmask definition
APOGEE2_TARGET2	int32		Second APOGEE-2 Targeting Flag, see bitmask definition
APOGEE2_TARGET3	int32		Third APOGEE-2 Targeting Flag, see bitmask definition
COMMISS	int16		Parameter set to 1 for commissioning data, else 0
EXTRATARG	int32		Bitmask that identifies main survey targets and other classes, see bitmask definitions.
MIN_H			Bright H limit for target selection of this object
MAX_H			Faint H limit for target selection of this object
MIN_JK			Blue J-K limit for target selection of this object
MAX_JK			Red J-K limit for target selection of this object
REDUCTION_ID	char[23]		Reduction pipeline identifier
SRC_H	int16		>Source employed for H magnitude
WASH_M	float32		Washington M mag
WASH_M_ERR	float32		M uncertainty
WASH_T2	float32		Washington T2 mag
WASH_T2_ERR	float32		T2 uncertainty
DDO51	float32		DDO 51 mag
DDO51_ERR	float32		DDO 51 uncertainty
IRAC_3_6	float32		IRAC 3.6 micron mag
IRAC_3_6_ERR	float32		IRAC 3.6 micron uncertainty
IRAC_4_5	float32		IRAC 4.5 micron mag
IRAC_4_5_ERR	float32		IRAC 4.5 micron uncertainty
IRAC_5_8	float32		IRAC 5.8 micron mag
IRAC_5_8_ERR	float32		IRAC 5.8 micron uncertainty
IRAC_8_0	float32		IRAC 8.0 micron mag
IRAC_8_0_ERR	float32		IRAC 8.0 micron uncertainty
WISE_4_5	float32		WISE 4.5 micron mag
WISE_4_5_ERR	float32		WISE 4.5 micron uncertainty
TARG_4_5	float32		Target 4.5 micron mag
TARG_4_5_ERR	float32		Target 4.5 micron mag uncertainty
AK_TARG	float32		K-band extinction adopted for targetting
AK_TARG_METHOD	char[11]		Method used to get targetting extinction
AK_WISE	float32		WISE all-sky K-band extinction
SFD_EBV	float32		SFD E(B-V)
WASH_DDO51_GIANT	int16		Evolutionary state classification derived from Wash+DDO51 photometry (1=giant, 0=dwarf, -1=no data)
WASH_DDO51_STAR	int16		Star/extended object likelihood based on Washington+DDO51 photometry (0=extended, 1=star-like or no data)
PMRA	float32		Proper motion RA measurement
PMDEC	float32		Proper motion DEC measurement
PM_SRC	char[21]		Source utilized for proper motion

HDU2: Index to Summary Table

Provides RA-indexed array giving index in HDU1 corresponding to each degree in RA, e.g., ARRAY[90] gives the index in HDU1 of first object with RA>90 degrees.

Data: FITS image