The historic Ks light curve of the FUor PGIR20dci

Abstract

We report a historic Ks-band light curve spanning over three decades of the FUor PGIR20dci recently discovered by Hillenbrand et al. (2021) . We find some minor variability of the object prior to the FUor outburst, an initial rather slow rise in brightness, followed in 2019 by a much steeper rise to the maximum.

arXiv commentThis paper has been accepted for publication as a AAS Research Note. We have added Table 1 with our Ks-band photometry so that this arXiv submission is self-contained