SALT Spectroscopic classification of ASASSN-18lp as a dwarf nova
ATel #11695; D. A. H. Buckley (SAAO), M. Gromadzki (Warsaw), Subo Dong (KIAA-PKU), K. Z. Stanek (OSU)
on 7 Jun 2018; 04:13 UT
Credential Certification: Subo Dong (dongsubo@pku.edu.cn)
Subjects: Optical, Cataclysmic Variable
ASASSN-18lp (AT 2018cex) was discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN, Shappee et al. 2014) on UT 2018-06-05.24 at g ~ 16 mag. It was observed with the Southern African Large Telescope (SALT) using the Robert Stobie Spectrograph on UT 2018-06-05.75 UT (HJD 2458275.2561) employing the PG300 lines/mm grating. A 1200s exposure spectrum, covering 3400 - 9000 Angstroms at a resolution of ~18 Angstroms with a 1.5 arcsec slit, was obtained in clear conditions with 1.1 arcsec seeing. The spectrum shows a very blue continuum with broad but shallow H I Balmer absorption lines, with H-alpha completely filled in. We interpret the spectrum to be that of a Dwarf Nova in outburst.
