ZTF18abxnvoz/AT 2024pvu was first detected by ZTF on 2024-05-31, and reported as a transient to TNS on 2024-07-22. It was subsequently selected by the tdescore ML classifier (Stein+2024) as a candidate TDE, primarily due to its persistent blue colour and the lack of AGN-like host signatures.
A classification spectrum was taken with the Double Spectrograph at the Palomar 200-in Hale Telescope on 2024-08-13. The spectrum shows a blue continuum, with galaxy absorption lines at a redshift of z=0.0488.There are no major narrow emission lines from the host, nor clear broad emission lines from the transient. Based on this spectrum, and the TDE-like lightcurve evolution (persistent blue colour and a long rise time of ~months), we classify ZTF18abxnvoz/AT 2024pvu as a probable TDE.
Forced photometry analysis of the ZTF data reveals a slow-rising lightcurve with pre-peak bumps, and yields many additional detections over the last three months.
ZTF18abxnvoz/AT 2024pvu continues to brighten, with a current g-band magnitude of m=17.1 in the optical. This corresponds to an absolute magnitude of M=-19.6, though we emphasise that the lightcurve has not yet reached peak.
Swift follow-up has been requested.
| Catalog | Name | Reported RA | Reported DEC | Reported Obj-Type | Reported Redshift | Host Name | Host Redshift | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2024pvu [ZTF18abxnvoz] | 23:31:11.947 | +22:15:31.71 | TDE | 0.0488 | 23:31:11.903 | +22:15:32.14 | TDE | 0.048 |