Classification certificate for object 2019gvn
TNS Classification Report No. 4239 [ 2019TNSCR.964....1P ]

Date Received (UTC): 2019-06-09 10:45:33
Sender: Dr. Andrea Pastorello
Group: Padova-Asiago

Andrea Pastorello report/s a classification of object: AT 2019gvn

Type: CV

Remarks: The low signal-to-noise spectrum of AT2019gvn (a.k.a. BraTS-SON-T2-006; discovered by the Brazilian Transient Search (BraTS) team; TNS Astronomical Transient Report No. 36916), 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.

The following Classification spectrum was provided:

Obsdate: 2019-06-09 01:55:12
Instrument: BC-Ekar
Telescope: Asiago Ekar Telescope

Remarks: The observation was performed on 2019-06-09.08 UT with the Asiago 1.22 m Galileo Galilei Telescope equipped with the B&C spectrograph (grt 300, range 330-790 nm; resolution 0.6 nm).

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2019gvn