DRAFT
2024-09-13 11:37:24
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.252....1D
Hostless candidates detected by ELEPHANT
Source Group: COIN
Abstract:
We report 9 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.
This report includes recent 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 | 2024tvp [ZTF24abcwlht] | 03:54:05.245 | -15:57:58.40 | Faint. Flat-ish light curve. | 03:54:05.231 | -15:57:58.54 | ||||||
| TNS | 2024skd [ZTF24abcbnyj] | 07:38:17.798 | +34:34:27.58 | Supernova candidate. Last available observation is from around 2 weeks ago. | 07:38:17.798 | +34:34:27.58 | ||||||
| TNS | 2024uhr [ZTF24abdnunm] | 02:10:14.434 | +27:08:55.33 | Supernova candidate. Rise time is around 2 weeks, now staring to decline. | 02:10:14.445 | +27:08:55.23 | ||||||
| TNS | 2024udw [ZTF24abdolll] | 04:01:11.226 | +20:44:30.80 | Supernova candidate. Light curve shows a rise of around 2 weeks. | 04:01:11.227 | +20:44:30.62 | ||||||
| TNS | 2024vge [ZTF24abdkymk] | 21:56:40.900 | +20:17:17.24 | Supernova candidate. Light curve rising for a little over 2 weeks. | 21:56:40.900 | +20:17:17.24 | ||||||
| TNS | 2024vgf [ZTF24abdofqs] | 02:27:51.732 | +27:39:16.96 | Supernova candidate. First shallow detection around a month ago, last point detected on September 9th seems to indicate the light curve is peaking. | 02:27:51.732 | +27:39:16.96 | ||||||
| TNS | 2024vgg [ZTF24abebruy] | 03:46:17.297 | +18:37:42.41 | Transient. Light curve around or just past peak. | 03:46:17.302 | +18:37:42.35 | ||||||
| TNS | 2024sed [ZTF24aaybjvl] | 16:18:24.661 | +34:42:03.07 | Light curve seems to be peaking. Flagged as a SLSN by the ZTF Superluminous Supernova Science Program (AstroNote 2024-238, Perley et al. 2024) and by NEEDLE (AstroNote 2024-241, Sheng et al. 2024). | 16:18:24.661 | +34:42:03.07 | ||||||
| TNS | 2024siw [ZTF24abakott] | 01:01:23.872 | +19:23:59.71 | Supernova candidate. Light curve is declining. | 01:01:23.872 | +19:23:59.71 |