ZTF-observed late-time signals of pre-ZTF transients

Open Access

Table 1.

Details of the three baseline regions used in our pipeline.

Baseline region	Length	No. passing cuts

(MJD)	(d)	g	r	i
58300 – 58664	365	6817	7198	744
59031 – 59395	365	7251	7258	3447
59915 – 60335	422 ^(*)	4792	5350	2457

Notes. The first column gives the start and end MJD of each baseline region, and the second column gives its length in days. The last three columns give the number of transients that had at least 30 points in the baseline to provide a robust estimate of the baseline, in the g, r, and i-band, respectively.

^(*)

The light curves were generated between 9 December 2023 and 24 January 2024, meaning that the final baseline for each object is between 374 and 420 days long. The final two days are a buffer to ensure all data is used.

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