The TWOMASS table contains holds the K, J and H selected samples originating from the 2MASS extended source catalogue. The K-selected sample, K < 12.75 represents the primary 6dFGS input catalogue. The H and J selected samples reach H < 13.00 and J < 13.75. The programme ID numbers (progid in the target table) for the K, H and J selected surveys are 1, 3 and 4 respectively.

2MASS homepage

TWOMASS

Parameter	Type	Description
OBJID	int	unique ID number
CATNAME	varchar(15)	2MASS catalogue name
prevCATNAME	varchar(15)	original catalogue name
TARGETNAME	varchar(15)	matching name in target table, used to name FITS files and generate thumbnail images
TARGETID	bigint	matching ID number in target
RA	float	RA J2000
DEC	float	Dec J2000
PRIORITY	smallint	survey weight
MAG_1	real	supplied magnitude
PROGID	smallint	programme ID
MAG_2	real	supplied magnitude
J_M_K20FE	real	J 20mag/sq." isophotal fiducial ell. ap. magnitude
H_M_K20FE	real	H 20mag/sq." isophotal fiducial ell. ap. magnitude
K_M_K20FE	real	K 20mag/sq." isophotal fiducial ell. ap. magnitude
RADIUS	real	20mag/sq." isophotal K fiducial ell. ap. semi-major axis
A_B	real	minor/major axis ratio fit to 3-sig. super-coadd isophote
MUK20FE	real	average surface brightness within the mu_K = 20mag/sq arcsec elliptical isophote (derived from K_M_K20FE, RADIUS and A_B)
CORR	real	correction, based on MUK20FE, made to the isophotal magnitude K_M_K20FE to get a pseudo-total magnitude K
J	real	J magnitude (JEXT) used for J selection
H	real	H magnitude (HEXT) used for H selection
KEXT	real	KEXT magnitude
K	real	K magnitude (corrected) used for K selection
KEXT_K	real	KEXT minus K (corrected)
JTOT	real	J total magnitude
HTOT	real	H total magnitude
KTOT	real	K total magnitude
RTOT	real	radius of the total size of the galaxy