TNS Classification Report No. 21927 [ 2025TNSCR3466....1C ]
Date Received (UTC): 2025-08-30 16:51:00 Sender: Panos Charalampopoulos
Group: None
Panos Charalampopoulos (UTU) report/s a classification of object: TDE 2025vjw
Type: OtherRedshift: 0.068
Remarks: We present a NOT/ALFOSC optical spectrum of the rising optical transient AT 2025vjw located in the nucleus of its host galaxy. The spectrum is blue and featureless. There are no evident host galaxy lines and no spectroscopic redshift for the host. At a redshift of z~0.068, we tentatively identify some galaxy lines and a broad and shallow He II 4686 (see Body) but the identification is not robust. At this redshift, the latest g-band absolute magnitude (corrected for MW extinction; A_V = 0.124) is M = –19.2. Based on the spectra, the location of the transient, the absolute magnitude and its persistent blue optical colours (g-r = -(0.3-0.4)), it is possible that AT 2025jvw is a tidal disruption event, however a (superluminous) supernova cannot be ruled-out yet. Further follow-up to determine the nature of the transient is encouraged. Until then, we classify the transient as "Other".
The following Classification spectrum was provided:
Obsdate: 2025-08-30 00:54:15
Instrument: ALFOSC
Telescope: Nordic Optical Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025vjw
Date Received (UTC): 2025-08-30 16:51:00 Sender: Panos Charalampopoulos
Group: None
Panos Charalampopoulos (UTU) report/s a classification of object: TDE 2025vjw
Type: OtherRedshift: 0.068
Remarks: We present a NOT/ALFOSC optical spectrum of the rising optical transient AT 2025vjw located in the nucleus of its host galaxy. The spectrum is blue and featureless. There are no evident host galaxy lines and no spectroscopic redshift for the host. At a redshift of z~0.068, we tentatively identify some galaxy lines and a broad and shallow He II 4686 (see Body) but the identification is not robust. At this redshift, the latest g-band absolute magnitude (corrected for MW extinction; A_V = 0.124) is M = –19.2. Based on the spectra, the location of the transient, the absolute magnitude and its persistent blue optical colours (g-r = -(0.3-0.4)), it is possible that AT 2025jvw is a tidal disruption event, however a (superluminous) supernova cannot be ruled-out yet. Further follow-up to determine the nature of the transient is encouraged. Until then, we classify the transient as "Other".
The following Classification spectrum was provided:
Obsdate: 2025-08-30 00:54:15
Instrument: ALFOSC
Telescope: Nordic Optical Telescope
Details of the object and its spectra can be viewed here: https://www.wis-tns.org/object/2025vjw