galaxy: Sculptor dwarf
location: RA = 01h 00m 09.3s  Dec = -33d 42m 33s
photometric system: UKIRT
name of database: db_Scu.txt
names of columns and meaning:
star_id - identification number for every star
RA - Right Ascension valid for epoch J2015.5 [deg]
Dec - Declination valid for epoch J2015.5 [deg]
mag_J - magnitude in J-band in UKIRT phot. syst. [mag]
err_J - uncertainty of J magnitude as found in DAOPHOT [mag]
mag_K - magnitude in K-band in UKIRT phot. syst. [mag]
err_K - uncertainty of K magnitude as found in DAOPHOT [mag]
ell_J - ellipticity in J-band as found in SExtractor, NaN if not found
ell_K - ellipticity in K-band as found in SExtractor, NaN if not found
JD_J - Julian Date of observations in J-band
JD_K - Julian Date of observations in K-band
frg - is the star a foreground star? Based on Gaia eDR3 parallaxes and proper motions (1 = foreground object, 0 = non-foreground object, NaN = data unavailable)
x_J - x coordinate of star's centroid in J image [pix]
y_J - y coordinate of star's centroid in J image [pix]
x_K - x coordinate of star's centroid in K image [pix]
y_K - y coordinate of star's centroid in K image [pix]
instr - name of instrument that took the images
refimage_J - name of reference J image, to which x,y centroids refer to
refimage_K - name of reference K image, to which x,y centroids refer to

Columns in completeness file:
compl99 - completeness at a level of 99 percent for stars of this magnitude
compl95 - completeness at a level of 95 percent for stars of this magnitude
compl90 - completeness at a level of 90 percent for stars of this magnitude
compl75 - completeness at a level of 75 percent for stars of this magnitude
compl50 - completeness at a level of 50 percent for stars of this magnitude