[vsnet-alert 18898] ASASSN-15ni: dwarf nova in outburst (ATEL)

[Taichi Kato]

   The spectrum suggests a possible WZ Sge-type object
(CIII/NIII, although the signal is weak).  The object
probably does not have a high inclination, and the amplitudes
of early superhumps will be small.

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ATEL #7854                                                           ATEL #7854

Title:  Spectroscopic classification of ASASSN-15ni as a cataclysmic
                variable in outburst
Author: Paolo Berardi (ARAS)
Queries:        stanek.32 at osu.edu
Posted: 28 Jul 2015; 23:35 UT
Subjects:Optical, Cataclysmic Variable

We report a <A href=http://quasar.teoth.it/html/spectra/ASASSN-15ni_profile.png>low-resolution
optical spectrum</a> of ASASSN-15ni (ATel #7850), obtained on 2015-07-28.929
using a 0.23-m Schmidt-Cassegrain telescope and a Lhires III spectrograph
configured for low-resolution (450-715 nm, res. 1 nm). The strong blue
continuum, a faint emission of H-alpha line, a narrow component in a broad

absorption for H-beta line and CIII/NIII 4640 blend in emission suggest
that 
the transient is a dwarf nova in outburst.