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Published January 8, 2022 | Version 1
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Optical Variability of Quasars with 20-Year Photometric Light Curves

Description

TotalDat.fits.gz: A FITS table storing information for each of the quasars used in the sample. The names, formats, and contents of each of the columns in this table are described in Table 1. All time-series data (MJD_x, MAG_x, MAG_ERR_x), structure function data (DT_REST_x, SF_x, SF_ERR_x), and PSD data (REST_FREQ_x, CARMA_PSD_x, CARMA_PSD_ERR_L_x, CARMA_PSD_ERR_U_x) are stored as arrays.

 

EnsDat.fits.gz: A FITS table storing information for the ensemble analysis conducted on different subsets of the total sample. The names, formats, and contents of each of the columns in this table are described in Table 2. Similar to the previous file, time-series, structure function, and PSD data are stored as arrays.

 

It should be noted that for each quasar/ensemble, each array will be the same length to conform to the FITS file standards. Therefore, to force each array to be the same shape, arrays shorter than the largest array will be filled with either NaNs or empty strings until they reach this maximum array length. There will be three columns for many of the values, one for each bandpass (g,r,i), also described in Table 1. 

Notes

Updated 2/9/2023. See Version 2.

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Additional details

Related works

Is supplement to
Journal article: arXiv:2201.02762 (arXiv)
Journal article: 10.1093/mnras/stac1259 (DOI)