- RA (D) [deg] SAS task
evalcorr
Corrected Right Ascension of the detection in degrees (J2000) after
statistical correlation of the emldetect coordinates, RA_UNC and DEC_UNC, with the USNO B1.0 optical
source catalogue using the SAS task eposcorr. In case where
the cross-correlation is determined to be unreliable no correction is
applied and this value is therefore the same as RA_UNC (cf. Sec. 3.1.3).
DEC (D) [deg]SAS task
evalcorr
Corrected Declination of the detection in degrees (J2000) after
statistical correlation of the emldetect coordinates, RA_UNC and DEC_UNC, with the USNO B1.0 optical
source catalogue using the SAS task eposcorr. In case where
the cross-correlation is determined to be unreliable no correction is
applied and this value is therefore the same as DEC_UNC (cf. Sec. 3.1.3).
POSERR (E) [arcsec]
Total position uncertainty in arcseconds calculated by combining the
statistical error RADEC_ERR and
the systematic error SYSERR as
follows:
POSERR = SQRT ( RADEC_ERR2 + SYSERR2 ).
This column was not given in 2XMMp.
LII (D) [deg] SAS task
evalcorr
Galactic longitude of the detection in degrees corresponding to the
(corrected) coordinates RA and
DEC.
BII (D) [deg] SAS task
evalcorr
Galactic latitude of the detection in degrees corresponding to the
(corrected) coordinates RA and
DEC.
RADEC_ERR (E) [arcsec] SAS task emldetect
Statistical 1 σ error on the detection position in arcseconds.
SYSERR (E) [arcsec]
The estimated systematic 1 σ error on the detection position in
arcseconds. It is set to be 0."35 if the
SAS task eposcorr results in a statistically reliable
cross-correlation with USNO B1.0 optical catalogue. Otherwise
the error is 1."0 (see Sec. 3.2.2 for details).
This column replaces SYSERRCC used in 2XMMp.
RA_UNC (D) [deg] SAS
task emldetect
Right Ascension of the source in degrees (J2000) as determined by
the SAS task emldetect by fitting a detection
simultaneously in all cameras and energy bands.
DEC_UNC (D) [deg] SAS
task emldetect
Declination of the source in degrees (J2000) as determined by the
SAS task emldetect by fitting a detection simultaneously in
all cameras and energy bands.