Classification certificate for object 2019lrq
TNS Classification Report No. 4642 [ 2019TNSCR1333....1T ]

Date Received (UTC): 2019-07-26 06:44:47
Sender: Dr. Lina Tomasella
Group: Padova-Asiago

L. Tomasella (INAF OAPd), M. Berton (FINCA University of Turku), S. Benetti, E. Cappellaro, M. Turatto, I. Salmaso report/s a classification of object: AT 2019lrq

Type: AGN
Redshift: 0.095

Remarks: AT2019lrq is a type 1 AGN at z = 0.095, as measured by the low ionization line [O II] 3727. The high ionization lines of [O III] are shifted with respect to the galaxy restframe by more than 100 km/s, suggesting a disturbed kinematics of the gas. A similar behavior is present in the Balmer lines. In particular, the Hbeta likely has three distinct kinematic components. The first has a FWHM of 1850 km/s and is blueshifted by 1680 km/s. The second component is in the same rame as the [O II] line, and has a FWHM of 1050 km/s. The last one, instead, is redshifted by 1360 km/s, and it has a FWHM of 2100 km/s. This behavior is reminiscent of a candidate black hole binary (Bon et al. 2012, 2016). The optical image, indeed, shows possible signs of a recent merger, which could account for these peculiar properties.

The following Classification spectrum was provided:

Obsdate: 2019-07-24 22:09:25
Instrument: AFOSC
Telescope: Asiago Ekar Telescope

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