V3890 Sagittarii

R. M. Wagner and R. Bertram, Ohio State University; and S. G. Starrfield, Arizona State University, report: "Optical spectra obtained of V3890 Sgr on May 2.38 UT, using the OSU CCD spectrograph (range 597.5-713.0 nm, resolution 0.2 nm) on the Perkins 1.8-m telescope at the Lowell Observatory, show strong and broad emission lines of H-alpha, He I (667.8, 706.5 nm), and numerous weaker features. [Fe VII] at 608.5 nm is present. He I at 706.5 nm exhibits a weak P-Cyg profile. The FWHM and FWZI of H-alpha emission are 2140 and 8600 km/s, respectively. The interstellar line at 628.4 nm is present with an equivalent width of about 0.1 nm. The spectrum is very similar to that of the recurrent nova V745 Sco (IAUC 4822, 4825, 4826) early in its 1989 outburst. A spectrum of V3890 Sgr in quiescence is presented by Williams (1983, Ap.J. Suppl. 53, 523)."