Asiago spectroscopic classification of AT2019gvn

ATel #12854; Paolo Ochner (Padova University), Andrea Pastorello (INAF-OAPd)
on 9 Jun 2019; 10:29 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Andrea Pastorello (andrea.pastorello@oapd.inaf.it)

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We report the spectroscopic classification of AT2019gvn (a.k.a. BraTS-SON-T2-006), discovered by the Brazilian Transient Search (BraTS) team (TNS Astronomical Transient Report No. 36916). The observations were performed with the Asiago 1.22 m Galileo Galilei Telescope equipped with the B&C spectrograph (range 330-790 nm; resolution 0.6 nm).

 
 
IAU Name    |  Survey Name     |  Discovery date (UT) | Discovery mag | Observation (UT)  |  Type   | z | Notes | 
AT2019gvn   | BraTS-SON-T2-006 |    2019-06-02.24     | 14.0 (Clear)  | 2019-06-09.08     | stellar | 0 | (1)   | 
 

(1) The low signal-to-noise spectrum shows a blue continuum with absorption lines of the Balmer series at redshift 0. This suggests the transient being a Galactic stellar source, most likely a cataclismic variable. Classification were done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024).