DRAFT
2024-09-14 12:18:04
Type: Object/s-Data/Analysis
Bibcode: 2024TNSAN.256....1O
GOTO detection of AT2024vjm (BGEM J190925.80-635001.7)
Authors: D. O'Neill, A. Kumar, B.Godson, G. Ramsay, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, on behalf of GOTO collaboration
Source Group: GOTO
Keywords: Transient
Abstract:
We report a pre-discovery GOTO detection of AT2024vjm (BGEM J190925.80-635001.7) on 2024-09-13 at 10:08:19 UT, constraining the explosion time to within ~9.2 hours.
The Gravitational-wave Optical Transient Observer (GOTO; Steeghs et al. 2022) collaboration reports a pre-discovery detection of AT2024vjm (BGEM J190925.80-635001.7) discovered by BlackGEM and MeerLICHT. AT2024vjm is detected at a 3-sigma significance level in a 4x45s image taken as part of our regular sky survey at 2024-09-13 10:08:19 UT using the L-band filter (400-700nm). Forced photometry at the position returns L-band = 19.21 +/- 0.24 AB mag. This, in conjunction with the reported BlackGEM and MeerLicht discovery and pre-detection data, limits the explosion epoch to a 9.12h window. The second GOTO-observation (4x45s images) of AT2024vjm at 2024-09-14 11:31:26 UT shows a L-band magnitude of 18.70 +/- 0.22, which indicates the rising behaviour of AT2024vjm.

We strongly encourage continued follow-up.

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 19:09:25.802 -63:50:01.78 19:09:25.780 -63:50:01.75 SN Iax[02cx-like] 0.0028
AstroNote Publication Timestamp Title Authors
2024-255 2024-09-14 10:56:12 BlackGEM and MeerLICHT discovery of possible young supernova in NGC6744 at 7 Mpc: AT2024vjm 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)

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