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Spectroscopic classification of TCP J06073081-0101501 as a dwarf nova

ATel #13424; Hiroyuki Maehara (National Astronomical Observatory of Japan)
on 28 Jan 2020; 21:03 UT
Credential Certification: Hiroyuki Maehara (hiroyuki.maehara@nao.ac.jp)

Subjects: Optical, Cataclysmic Variable, Transient, Variables

We report the spectroscopic observation of TCP J06073081-0101501 discovered by the Brazilian Transient Search (BraTS) on 2020-01-28.1039 (UT).
We obtained a low-resolution spectrum of this object on 2020-01-28.639 (UT) by using the fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. 2019) mounted on the 3.8-m Seimei telescope at Okayama Observatory of Kyoto University. The spectrum shows a blue continuum with an H-alpha emission line. H-beta and H-gamma are seen as absorption lines. A weak He II (4686) emission line can also be seen in the spectrum. These features suggest that the object is a dwarf nova in outburst.