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Spectroscopic classification of ASASSN-13bq: Hydrogen-rich Dwarf Nova

ATel #5213; C. M. Copperwheat, D. F. Bersier (LJMU), K. Z. Stanek, B. J. Shappee, C. S. Kochanek, J. Jencson, U. Basu, T. Holoien, J. F. Beacom (Ohio State), J. L. Prieto (Princeton), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), M. Dubberley, M. Elphick, S. Foale, E. Hawkins, D. Mullens, W. Rosing, R. Ross, Z. Walker (Las Cumbres Observatory), J. Brimacombe (Coral Towers Observatory)
on 18 Jul 2013; 15:34 UT
Credential Certification: Jose L. Prieto (jose@obs.carnegiescience.edu)

Subjects: Optical, Cataclysmic Variable, Transient

We observed the transient ASASSN-13bq (ATel #5209) on UT 2013 July 16.98 for 17 minutes with the FRODOspec spectrograph mounted on the robotic 2.0m Liverpool Telescope (LT). We obtained two simultaneous spectra, one covering the wavelength range 390-570 nm with R=2600, and one covering 580-900 nm with R=2200. We detect a blue continuum with H-beta and H-gamma seen in absorption at z=0. H-alpha is undetected. These features are indicative of a hydrogen-rich dwarf nova in outburst.

ASASSN-13bq was seen again by ASAS-SN on UT 2013 July 18.5 with V=15.5, compared to V=15.1 on 2013 July 16.6.