TABLE smashdr2_source

Contains the parameters provided for each source in the SMASH DR2 source catalogue.

This table contains the parameters provided for
each source in the SMASH DR Source Catalogue.

Required constraints:
Primary key is (cntr)

Name Type Length Unit Description Default Value Unified Content Descriptor

sourceid varchar 20 Unique ID for this source, the field name plus a running number

id varchar 16 Deep ID for this source, same as in object table

origid int 4 ID used for this detection in the original als/alf chip file

refid int 4 ID used for this detection in the reference frame file

fieldid int 4 Field ID

expnum varchar 8 Eight-digit exposure number

chip smallint 2 Chip number (1-62)

chipid varchar 16 Unique chip image name, e.g. 00123451_10

mjd float 8 Exposure Modified Julian Date

filter varchar 1 Filter, u, g, r, i, or z

x real 4 X-coordinate for this source in the original chip (1-indexed)

y real 4 Y-coordinate for this source in the original chip (1-indexed)

xref real 4 X-coordinate for this source in the reference chip (1-indexed)

yref real 4 Y-coordinate for this source in the reference chip (1-indexed)

forced smallint 2 Boolean flag indicating if this is forced (ALLFRAME) photometry

mag real 4 Instrumental magnitude from ALLFRAME or ALLSTAR (not both)

err real 4 Uncertainty of MAG

cmag real 4 Calibrated magnitude version of MAG

cerr real 4 Uncertainty of CMAG including errors in calibration

chi real 4 DAOPHOT chi value, i.e. how well the PSF fit this source

sharp real 4 DAOPHOT sharp value, measurement of peakiness

flag smallint 2 Source Extractor FLAG value from coadd image

prob real 4 Source Extractor stellaricity probability value (0∼galaxy, 1∼star)

ra float 8 degrees Right Ascension (J2000.0) of source

dec float 8 degrees Declination (J2000.0) of source

raerr real 4 Uncertainty in RA (arcseconds) based on S/N of source and PSF FWHM

decerr real 4 Uncertainty in DEC (arcseconds) based on S/N of source and PSF FWHM

raindiv float 8 Right Ascension of source, from the original chip X/Y and WCS

decindiv float 8 Declination of source, from the original chip X/Y and WCS

raref float 8 Right Ascension of source, from X/YREF and ref WCS

decref float 8 degrees Declination (J2000.0) of source, from the referene chip chip file using XREF/YREF coords and the reference chip WCS

htm9 int 4 HTM index (order 9 => ∼10 arcmin size)

ring256 bigint 8 HEALPix ring nside=256 index

nest4096 bigint 8 HEALPIX index (Nsides 4096, Nest scheme => ∼52 arcsec size

glon float 8 degrees Galactic longitude of field

glat float 8 degrees Galactic latitude of field

elon float 8 Ecliptic Longitude

elat float 8 Ecliptic Latitude

random_id real 4 Random ID

cntr bigint 8 Unique identification number for the Catalog source

Total length 251

Name	Type	Length	Unit	Description
sourceid	varchar	20		Unique ID for this source, the field name plus a running number
id	varchar	16		Deep ID for this source, same as in object table
origid	int	4		ID used for this detection in the original als/alf chip file
refid	int	4		ID used for this detection in the reference frame file
fieldid	int	4		Field ID
expnum	varchar	8		Eight-digit exposure number
chip	smallint	2		Chip number (1-62)
chipid	varchar	16		Unique chip image name, e.g. 00123451_10
mjd	float	8		Exposure Modified Julian Date
filter	varchar	1		Filter, u, g, r, i, or z
x	real	4		X-coordinate for this source in the original chip (1-indexed)
y	real	4		Y-coordinate for this source in the original chip (1-indexed)
xref	real	4		X-coordinate for this source in the reference chip (1-indexed)
yref	real	4		Y-coordinate for this source in the reference chip (1-indexed)
forced	smallint	2		Boolean flag indicating if this is forced (ALLFRAME) photometry
mag	real	4		Instrumental magnitude from ALLFRAME or ALLSTAR (not both)
err	real	4		Uncertainty of MAG
cmag	real	4		Calibrated magnitude version of MAG
cerr	real	4		Uncertainty of CMAG including errors in calibration
chi	real	4		DAOPHOT chi value, i.e. how well the PSF fit this source
sharp	real	4		DAOPHOT sharp value, measurement of peakiness
flag	smallint	2		Source Extractor FLAG value from coadd image
prob	real	4		Source Extractor stellaricity probability value (0∼galaxy, 1∼star)
ra	float	8	degrees	Right Ascension (J2000.0) of source
dec	float	8	degrees	Declination (J2000.0) of source
raerr	real	4		Uncertainty in RA (arcseconds) based on S/N of source and PSF FWHM
decerr	real	4		Uncertainty in DEC (arcseconds) based on S/N of source and PSF FWHM
raindiv	float	8		Right Ascension of source, from the original chip X/Y and WCS
decindiv	float	8		Declination of source, from the original chip X/Y and WCS
raref	float	8		Right Ascension of source, from X/YREF and ref WCS
decref	float	8	degrees	Declination (J2000.0) of source, from the referene chip chip file using XREF/YREF coords and the reference chip WCS
htm9	int	4		HTM index (order 9 => ∼10 arcmin size)
ring256	bigint	8		HEALPix ring nside=256 index
nest4096	bigint	8		HEALPIX index (Nsides 4096, Nest scheme => ∼52 arcsec size
glon	float	8	degrees	Galactic longitude of field
glat	float	8	degrees	Galactic latitude of field
elon	float	8		Ecliptic Longitude
elat	float	8		Ecliptic Latitude
random_id	real	4		Random ID
cntr	bigint	8		Unique identification number for the Catalog source
Total length		251