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

Open Access

Table 5.

Number of recovered signals for each SN type in our sample.

Type	No.	Tails		Siblings		Nuclear		CSM

		No.	%	No.	%	No.	%
Ia	4991	18	0.4	6 ^(a)	0.1	7	0.1	3	0.1
II	1311	19	1.4	4 ^(b)	0.3	0	0	0	0
Ib/c	339	3	0.9	0	0	0	0	0	0
IIn	279	8	2.9	0	0	0	0	0	0
I	58	2	3.4	0	0	0	0	0	0
Ibn	17	0	0	0	0	0	0	0	0

Notes. As it is unclear whether SN 2016cob and SN2017fby should be counted as nuclear transients or due to CSM interaction, they have been counted in both.

^(a)

This includes the unconfirmed but likely sibling at the position of SN 2017ige determined from our binned light curve analysis.

^(b)

This includes one sibling pair (SN 2009hz/AT 2018iml) where the ZTF transient was a likely CV based on its light curve.

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