Syntax:
-aov ["Nbin" Nbin] minp maxp subsample finetune Npeaks operiodogram [outdir] ["whiten"] ["clip" clip clipiter] ["uselog"] ["fixperiodSNR" <"aov" | "ls" | "injectharm" | "fix" period | "spec" | "fixcolumn" <colname | colnum>>] Example 1.$./vartools -i EXAMPLES/2 -oneline -ascii \ -aov Nbin 20 0.1 10. 0.1 0.01 5 1 EXAMPLES/OUTDIR1 \ whiten clip 5. 1 Name = EXAMPLES/2 Period_1_0 = 1.23583047 AOV_1_0 = 18330.55450 AOV_SNR_1_0 = 7260.34519 AOV_NEG_LN_FAP_1_0 = 7633.23914 Period_2_0 = 0.13011657 AOV_2_0 = 45.37532 AOV_SNR_2_0 = 20.21064 AOV_NEG_LN_FAP_2_0 = 339.21684 Period_3_0 = 0.17657032 AOV_3_0 = 49.35941 AOV_SNR_3_0 = 27.39833 AOV_NEG_LN_FAP_3_0 = 368.38239 Period_4_0 = 0.12675512 AOV_4_0 = 15.24895 AOV_SNR_4_0 = 7.57564 AOV_NEG_LN_FAP_4_0 = 103.14339 Period_5_0 = 0.12056969 AOV_5_0 = 16.69317 AOV_SNR_5_0 = 9.40720 AOV_NEG_LN_FAP_5_0 = 115.00693
Runs the phase-binning AoV period-finding algorithm on the light curve EXAMPLES/2. 20 phase-bins are used. Periods between 0.1 and 10.0 days are searched. The coarse search is done at a frequency resolution of 0.1/T (T is the time-span of the lc, 31.1d in this case). The fine search around the peaks is done at a frequency resolution of 0.01/T. The top 5 peaks are identified, between each cycle the best-fit signal is removed and the periodogram is regenerated. The periodogram is output (the '-ascii' flag ensures that it is output as an ascii file rather than a binary file) to the directory EXAMPLES/OUTDIR1. The filename will be 2.aov. An iterative 5-sigma clipping is applied when identifying peaks in the periodogram.
Fig 1. AoV Periodogram for the first peak computed in Example 1.