Spectroscopy of CSS080924:233423+391423: A likely dwarf nova

Astronomy and Astrophysics – Astronomy

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Optical, Cataclysmic Variables, Transients

Scientific paper

We observed the flaring optical transient, CSS080924:233423+391423, discovered by CRTS (ATel #1741), with the Double Beam Spectrograph on the 5-m Palomar Hale Telescope on Sep. 29.16 UT. The spectra (340-1000 nm) reveal numerous emission lines at zero redshift including H-Balmer, HeI, HeII, and CaII H&K features. These features are typical of Galactic dwarf novae. The FWHM measured from the Balmer lines is about 900 km/s.

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