Optical follow-up of a turn-on changing-look AGN AT2022aamy
ATel #18145; Bing Lyu(Wuhan University), Ruixiang Hu(Wuhan University), and Bei you(Wuhan University)
on 7 Nov 2026; 07:15 UT
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Credential Certification: Bing Lyu (lyubing@pku.edu.cn)
We report the follow-up photometric observations with MATCH (Multi-mode Autonomous Terminal for Compatible Hybrid-optics, WHU 1m optical telescope) of a turn-on CLAGN, AT2022aamy, with broad H-alpha and H-beta emission lines and double-peaked structure (reported by Transient Name Server AstroNote TNS #2026-284). The source is brightening, with a ZTF g-band magnitude of 17.21+/- 0.02 mag at MJD 60969. We performed new observations and obtained the g, r, and i band magnitudes of 17.05+/- 0.03, 16.17+/-0.02, and 15.61+/-0.03 mag on 2026 Nov 7 at MJD 61350. Further spectroscopic observations will continue and are encouraged.
The detailed photometric observation results are below:
Band | MJD | Differential photometry (mag) | Image subtraction photometry(mag) | Differential flux (host subtracted)
g | 61350.629 | 17.0475+/-0.0264 | 16.8552+/-0.0770 | 20.187+/-0.235
r | 61350.630 | 16.1708+/-0.0151 | 16.2111+/-0.0448 | 19.313+/-0.129
i | 61350.631 | 15.6115+/-0.0269 | 15.6966+/-0.0346 | 19.117+/-0.313
