TITLE: GCN CIRCULAR NUMBER: 25921 SUBJECT: LIGO/Virgo S190930t: Palomar 200-in DBSP follow-up of ZTF19acbpqlh and ATLAS19wyn DATE: 19/10/02 07:58:46 GMT FROM: Kishalay De at Caltech, GROWTH V. Karambelkar, K. De, J. Van Roestel, M. M. Kasliwal (Caltech) On behalf of the Zwicky Transient Facility (ZTF) and Global Relay of Observatories Watching Transients Happen (GROWTH) collaborations On 2019 Oct 2 UT, we obtained spectra of ZTF19acbpqlh/AT2019rpn and ATLAS19wyn/AT2019rpj (Stein et al. GCN 25899) with the Double Beam Spectrograph on the Palomar 200-in telescope. For ATLAS19wyn, we identify strong Balmer P-Cygni features at z~0.03 and classify as a young Type II supernova. For ZTF19acbpqlh, we see a blue, mostly featureless continuum with a tentative identification of a weak, broad feature around H-alpha suggesting this may also be a core-collapse supernova.