Open Access

Table A.1.

Follow-up observations of transients with late-time signals.

Name Tel. / Inst. Mode Setup MJD Exp. time (s) Seeing (″) Comment
SN 2020yvs NOT / ALFOSC phot gri 60388 10 x 10 0.9 g > 22.2, r > 21.8, i > 21.6 mag
SN 2020jsa NOT / ALFOSC phot gri 60432 10 x 30 1.0 g > 22.76, r > 22.49, i > 23.05 mag, host residual
SN 2021nbt NOT / ALFOSC phot ri 60482 4 x 30 0.9 r = 19.458 ± 0.040, i = 19.123 ± 0.062 mag
SN 2019zbq GTC / OSIRIS phot r 60271 1 x 10 1.2 r = 20.7 ± 0.1 mag
spec Grism R1000R, 1.0″slit 60282 3 x 1200 1.2 Contains host & excess spectra

SN 2020qxz NOT / ALFOSC phot i 60389 1 x 600 1.7 i > 21.5 mag
spec Grism #4, 1.3″slit 60389 3 x 1200 1.7 Part of March spectrum
phot i 60399 1 x 600 1.4 i > 21.5 mag
spec Grism #4, 1.3″slit 60399 3 x 1200 1.4 Part of March spectrum
spec Grism #4, 1.3″slit 60400 3 x 1200 0.8 Part of March spectrum
spec Grism #4, 1.3″slit 60413 3 x 1200 1.5 Part of April spectrum
spec Grism #4, 1.3″slit 60414 3 x 1200 1.7 Part of April spectrum
spec Grism #4, 1.3″slit 60415 2 x 1200 1.3 Part of April spectrum
spec Grism #4, 1.0″slit ( * ) 60433 3 x 1200 1.4 Part of host spectrum
spec Grism #4, 1.0″slit ( * ) 60480 3 x 1200 0.7 Part of host spectrum

Notes. The exposure time is noted as the number of exposures x exposure time of a single exposure. Photometric observations taken in multiple bands with the same exposures are mentioned in the same row.

(*)

A WG345 order blocking filter was used to remove second order contamination in the red part of the spectrum.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.