DRAFT
2025-01-29 18:36:55
Type: Object/s-Discovery/Classification
Bibcode: 2025TNSAN..42....1P
BlackGEM discovery of AT2025ajq in the outskirts of Centaurus A / NGC 5128
Authors: J. Paice (Durham), H. Tranin (Barcelona), P. Groot (Radboud/SAAO/UCT), P.M. Vreeswijk (Radboud), S. Bloemen (Radboud), D. Pieterse (Radboud)
Source Group: BlackGEM
Keywords: Surveys, Time-domain, Photometry, Transient, Optical
Abstract:
The BlackGEM Consortium notes that the recently discovered AT2025ajq is located in the outskirts of the giant elliptical galaxy Centaurus A / NGC 5128

The BlackGEM Consortium notes that AT2025ajq is located in the outskirts of the nearby giant elliptical galaxy Centaurus A / NGC 5128. AT2025ajq was discovered by the BlackGEM array of telescopes (Groot et al., 2024) on 2025-01-29 06:15:21 at q=20.1 with two subsequent detections two hours later showing the transient at q=19.7 and 19.8. Observations in the u- and i-bands show 5-sigma upper limits at u>19.2 and i>19.1. The last q-band non-detection was at 2025-01-29 06:07:44 at q>20.7, implying a fast rise. 

Follow-up observations are encouraged to characterise AT2025ajq. 

 

References:

Groot et al., 2024, PASP 136, 115003, "The BlackGEM Telescope Array. I. Overview"

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 2025ajq [BGEM J132531.65-425836.6] 13:25:31.656 -42:58:36.66 13:25:31.656 -42:58:36.66

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