TNS Classification Report No. 20573 [ 2025TNSCR.992....1H ]
Date Received (UTC): 2025-03-14 23:37:30 Sender: Erica Hammerstein
Group: ZTF
E. Hammerstein (UC Berkeley), R. Stein (JSI), R. Chornock (UC Berkeley), Y. Yao (UC Berkeley), I. Andreoni (UNC), J. Carney (UNC) on behalf of the ZTF AGN/TDE working group report/s a classification of object: TDE 2025cyh
Type: TDERedshift: 0.105
The following Classification spectrum was provided:
Obsdate: 2025-03-05 00:00:00
Instrument: LRIS
Telescope: Keck I 10m
Remarks: The source redshift was determined to be z=0.105. The classification of this source remains ambiguous given the narrow emission line features consistent with the AGN-like line ratios but lack of strong AGN-like WISE colors and variability. We present this source as a possible TDE candidate, but it may also belong to other classes of nuclear transients, including the Bowen Fluorescence Flares (BFFs) put forth by Trakhtenbrot et al. 2019.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025cyh
Date Received (UTC): 2025-03-14 23:37:30 Sender: Erica Hammerstein
Group: ZTF
E. Hammerstein (UC Berkeley), R. Stein (JSI), R. Chornock (UC Berkeley), Y. Yao (UC Berkeley), I. Andreoni (UNC), J. Carney (UNC) on behalf of the ZTF AGN/TDE working group report/s a classification of object: TDE 2025cyh
Type: TDERedshift: 0.105
The following Classification spectrum was provided:
Obsdate: 2025-03-05 00:00:00
Instrument: LRIS
Telescope: Keck I 10m
Remarks: The source redshift was determined to be z=0.105. The classification of this source remains ambiguous given the narrow emission line features consistent with the AGN-like line ratios but lack of strong AGN-like WISE colors and variability. We present this source as a possible TDE candidate, but it may also belong to other classes of nuclear transients, including the Bowen Fluorescence Flares (BFFs) put forth by Trakhtenbrot et al. 2019.
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025cyh