Southern Sample: File Format


The following table describes the format of each light curve file, with filenames equal to the 'DBID' value in the first column of DB_QSO_S82.dat.
For each observation (ie. each row in the lightcurve file), each band is imaged at slightly different times, hence the different MJD for each band.

Field (Column) Format Units Label Explanations
1 D days MJD_u Modified Julian Date for u-band observation
2 F6.3 mag u Apparent u-band magnitude (1)
3 F5.3 mag u_err u-band error
4 D days MJD_g Modified Julian Date for g-band observation
5 F6.3 mag g Apparent g-band magnitude (1)
6 F5.3 mag g_err g-band error
7 D days MJD_r Modified Julian Date for r-band observation
8 F6.3 mag r Apparent r-band magnitude (1)
9 F5.3 mag r_err r-band error
10 D days MJD_i Modified Julian Date for i-band observation
11 F6.3 mag i Apparent i-band magnitude (1)
12 F5.3 mag i_err i-band error
13 D days MJD_z Modified Julian Date for z-band observation
14 F6.3 mag z Apparent z-band magnitude (1)
15 F5.3 mag z_err z-band error
16 D deg ra_median Median Right Ascension in decimal degrees (J2000, 360° is subtracted from all RA values > 300°)
17 D deg decl_medianMedian Declination in decimal degrees (J2000)

Note (1): The ugriz magnitudes are not corrected for Galactic absorption. Bad observations are printed as '-99.99'.

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