Classification certificate for object 2017dau
TNS Classification Report No. 906 [ 2017TNSCR.463....1B ]

Date Received (UTC): 2017-04-22 20:10:37
Sender: Dr. Nadejda Blagorodnova
Group: None

Nadejda Blagorodnova report/s a classification of object: AT 2017dau

Type: LBV
Redshift: 0.01062

Remarks: The spectrum shows a black body continuum of 5500 K and strong H alpha and H beta narrow emission lines with P-Cygni profile. We measure an expansion velocity of 1200 km/s and a FWHM of 1070 km/s.

The following Classification spectrum was provided:

Obsdate: 2017-04-19 07:45:12
Instrument: DBSP
Telescope: Palomar 5.1m Hale

Details of the object and its spectra can be viewed here: https://wis-tns.weizmann.ac.il/object/2017dau