DRAFT
2024-09-14 10:56:12
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.255....1G
BlackGEM and MeerLICHT discovery of possible young supernova in NGC6744 at 7 Mpc: AT2024vjm
Authors: P.J. Groot (Radboud/UCT/SAAO), H. Tranin (Barcelona), J. van Roestel (UvA), E. Zimmerman (Weizmann), S. Faris (TelAviv), H. Wichern (DTU), G. Ramsay (Armagh), F. Stoppa (Oxford/Radboud), N. Blagorodnova (Barcelona), S. Bloemen (Radboud), P. Vreeswijk (Radboud), D. Pieterse (Radboud)
Source Group: BlackGEM
Keywords: Transient, Supernova, Optical
Abstract:
BlackGEM and MeerLICHT discovery of possible very young transient/supernova AT2024vjm at q_AB=18.82 in NGC6744 at 7 Mpc, with 18hrs non-detection window.

The BlackGEM consortium reports the possibly very young supernova AT2024vjm in NGC6744, at a distance of 7 Mpc, located at RA (ICRS) = 19:09:25.802 (287.357508), DEC (ICRS) = -63:50:01.78 (-63.833828). AT2024vjm was first detected on 2024-09-13 23:59:05 at a magnitude of q_AB = 18.82 and was detected three times each in both the q and i-band filters on BG2 and BG4. The last BlackGEM non-detection was at  2024-09-13 00:01:00 at q_AB > 20.12 on BG4. 

Additionally, the object has multiple detections in MeerLICHT q-, and i-band data starting on 2024-09-13 17:51:00 at q_AB = 18.82 +/- 0.12. The last MeerLICHT non-detection was at 2024-09-12 21:17:42 at q_AB > 19.72. 

The combined BlackGEM-MeerLICHT data give an explosion window of 17h50m between 2024-09-13 00:01:00 and 2024-09-13 17:51:00. Further constraints from other surveys and follow-up spectroscopy to identify the nature of AT2024vjm are highly encouraged. 

 

Show current TNS values
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 2024vjm [BGEM J190925.80-635001.7] 19:09:25.802 -63:50:01.78 19:09:25.780 -63:50:01.75 SN Iax[02cx-like] 0.0028

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