We observed AT2024fkm with AST3 (Antarctic Survey Telescope 3-3) at Yaoan Astronomy Observation Station (China, Yunnan) with 60 240 second exposures spanning 2024-04-07T15:07:27.731 to 2024-04-07T19:08:34.228 by AST3-3 in g-band.
The stacked image was analyzed by stdpipe (Karpov et al., 2020) using PS1 reference images. The depth is 22.1 magnitude in g-band and the flux of the transient on the top of the galaxy contribution is 20.13
+/- 0.03.
We extracted a g-ZTF stacked image from 2018-03-28, composed of 8x30s individual images in rsa.ipac.caltech.edu. The depth of the reference is 21.2 g-band. We measured a flux of the galaxy at the location of the transient of 21.16 +/- 0.20.
We finally measured the flux of the transient (without the galaxy contribution) of 20.66 +/- 0.14
The source faded > 0.5 mag in 3 days, according to the last ZTF public report.
| 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 | 2024fkm | 13:53:08.582 | +35:43:14.27 | 13:53:08.564 | +35:43:14.38 | SN IIb | 0.04113 |