AKARI/IRC All-Sky Survey Point Source Catalogue Version 1.0
AKARI/IRC Overview
The AKARI/IRC Point Source Catalogue Version 1.0 provides positions and fluxes of 870,973
sources (844,649 sources in 9 micron band and 194,551 sources in 18 micron band) in the Mid-Infrared
wavelengths.
The IRC scanned 96 / 97 percent of the entire sky in 9 / 18 micron band twice or more
during the 16 months of the cryogenic mission phase. The Point Source Catalogue is the primary catalogue
from the AKARI IRC survey. The catalogue is designed to have a uniform detection limit over the entire
sky, based on the uniform source detection limit per scan observation. Redundant observations are
used to increase the reliability of the detection.
The AKARI/IRC Release Note documentation can be found
here.
AKARI/IRC Point Source Catalogue v1.0 Column Descriptions
Gator serves the AKARI/IRC Point Source Catalogue v1.0 (35 columns [30 delivered + 5 IRSA-created], 870,973 data rows).
The column descriptions can be found below.
| Name |
Intype |
Units |
Description |
| OBJID |
int |
|
Internal Object ID |
| OBJNAME |
char |
|
Source Identifier. Sources should be referred to in the literature
using the full name "AKARI-IRC-V1 J"OBJNAME.
Example: AKARI-IRC-V1 J0123456+765432 |
| ra |
double |
deg |
Right Ascension (J2000) |
| dec |
double |
deg |
Declination (J2000) |
| POSERRMJ |
float |
arcsec |
Position error major axis |
| POSERRMI |
float |
arcsec |
Position error minor axis |
| POSERRPA |
float |
deg |
Position error Position Angle |
| FLUX09 |
float |
Jy |
Flux density in S9W (Jy) |
| FLUX18 |
float |
Jy |
Flux density in L18W (Jy) |
| FERR09 |
float |
Jy |
Flux error in S9W |
| FERR18 |
float |
Jy |
Flux error in L18W |
| FQUAL09 |
int |
|
Flux quality flag for S9W:
3: Valid
0: Flux not available |
| FQUAL18 |
int |
|
Flux quality flag for L18W:
Values as in FLAGS09 |
| FLAGS09 |
char |
|
Bit flags data quality for S9W:
Values are expressed in Hexadecimal format.
1: Period between first and last detection is less than a month
2: Saturated (not currently used)
4: use SAA (not currently used)
8: use edge events, flux underestimated |
| FLAGS18 |
char |
|
Bit flags data quality for L18W:
Values as in FLAGS09 |
| NSCANC09 |
int |
|
Number of scans on which the source is detected for S9W |
| NSCANC18 |
int |
|
Number of scans on which the source is detected for L18W |
| NSCANP09 |
int |
|
Number of times the source position has been scanned for S9W |
| NSCANP18 |
int |
|
Number of times the source position has been scanned for L18W |
| MCONF09 |
int |
|
Months confirmation flag for S9W:
1 is month confirmed, 0 is not. Inverted value of LSB of FLAGS09. |
| MCONF18 |
int |
|
Months confirmation flag for L18W:
1 is month confirmed, 0 is not. Inverted value of LSB of FLAGS18. |
| NDENS09 |
int |
|
Number of sources in 45 arcsec radius for S9W |
| NDENS18 |
int |
|
Number of sources in 45 arcsec radius for L18W |
| EXTENDED09 |
int |
|
Extended source flag for S9W:
Set to 1 if MEAN_AB09 > 15.6 arcsec |
| EXTENDED18 |
int |
|
Extended source flag for L18W:
Set to 1 if MEAN_AB18 > 15.6 arcsec |
| MEAN_AB09 |
float |
arcsec |
Average of radius along major and minor axes for S9W |
| MEAN_AB18 |
float |
arcsec |
Average of radius along major and minor axes for L18W |
| NDATA_POS |
int |
|
Number of events used for positional calculation.
NDATA_POS = NSCANC09 for NSCANC09≥2
NDATA_POS = NSCANC18 for NSCANC09<2 |
| NDATA09 |
int |
|
Number of events contributing to FLUX09 |
| NDATA18 |
int |
|
Number of events contributing to FLUX18 |