DRAFT
2024-07-12 07:39:44
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.191....1H
Hostless candidates detected by ELEPHANT
Abstract:
We report 5 hostless candidates selected by the ELEPHANT pipeline.
Transient astronomical events that exhibit no evident association with a host galaxy are rare phenomena associated with extremely energetic events. They can offer unique insights into the properties and evolution of stars and galaxies. In this context, we developed the ELEPHANT pipeline (Pessi et al. 2024) to process alerts from the Zwicky Transient Facility (ZTF; Bellm et al. 2019; Graham et al. 2019) ingested by the Fink broker (Möller et al. 2021) and automatically find hostless candidates. Data from the ALeRCE broker was used for subsequent analysis during Fink downtime.
This report includes recently reported hostless candidates, sumarized below. We encourage classification and follow up of these targets.
| 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 | 2024lsk [ZTF24aarwigk] | 13:32:48.172 | -02:23:18.38 | Supernova candidate. Seem to have been plateauing by the time of the last available observation on July 3rd. | 13:32:48.172 | -02:23:18.38 | ||||||
| TNS | 2024nph [ZTF24aatbnwe] | 13:14:10.037 | +00:57:56.00 | Supernova candidate. Just after peak? | 13:14:10.037 | +00:57:56.00 | ||||||
| TNS | 2024php [ZTF24aatxncb] | 18:27:18.917 | +69:25:16.66 | Supernova candidate. It seemed to have been rising although few detections. | 18:27:18.917 | +69:25:16.66 | ||||||
| TNS | 2024phm [ZTF24aatiglb] | 15:13:11.830 | +29:10:30.61 | Supernova candidate. Seems to be plateauing. | 15:13:11.830 | +29:10:30.61 | ||||||
| TNS | 2024pho [ZTF24aasuxmk] | 12:27:22.424 | +64:19:28.85 | Supernova candidate. Light curve seems flat. | 12:27:22.424 | +64:19:28.85 |