TITLE: GCN CIRCULAR NUMBER: 24220 SUBJECT: LIGO/Virgo S190425z: DCT ZTF19aarykkb spectroscopy DATE: 19/04/26 12:03:00 GMT FROM: Simone Dichiara at UMCP/NASA/GSFC S.Dichiara (UMD, NASA-GSFC), P. Gatkine (UMD), J. Durbak (UMD), E. Troja (UMD, NASA-GSFC), S.B. Cenko (NASA-GSFC), A. Kutyrev (UMD, NASA-GSFC), S. Veilleux (UMD), report on behalf of a larger collaboration: We observed ZTF19aarykkb (Kasliwal et al., GCN 24191) using the the DeVeny spectrograph mounted on the 4.3m Discovery Channel Telescope. We obtained 22.5 min exposures at an average airmass of 1.5. Our spectra cover the wavelength range ~3,600-8,000 Angstrom. A preliminary analysis our spectrum shows a bright emission line likely associated to the H-alpha transition and a relatively featureless continuum. Overall our results are consistent with the reports from Pavana (GCN 24200) and Perley (GCN 24204). We thank the staff of the Discovery Channel Telescope in particular Andrew Hayslip, Ishara Nisley for assistance with these observations. We also thank Jennifer Hanley for contributing her time.