AstroNote 2024-304

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DRAFT
2024-10-22 13:34:00
Type: Object/s-Discovery/Classification
Hostless candidates detected by ELEPHANT
Authors: R. Durgesh (independent), P. Pessi (OKC), E. E. O. Ishida (CNRS), E. E. Hayes (KIC), L. Nakazono (USP), R. A. P. Oliveira (UW), A. Moitinho (CENTRA), A. Krone-Martins (UC), B. Moews (UE), R. S. de Souza (UH), R. Beck (independent), M. A. Kuhn (UH), K. Nowak (UH), and S. Vaughan (MU), for the COIN collaboration.
Source Group: COIN
Abstract:
We report 11 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.

 
 
 
Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2024wdo [ZTF24abixjxu]03:15:57.803+23:29:43.59SN candidate, past peak, g band declining faster than r band.03:15:57.803+23:29:43.59
TNS2024ulk [ZTF24abdzkva]21:58:40.550+24:52:08.42SN candidate, past peak, light curve shape suggests H depleted SN21:58:40.550+24:52:08.42
TNS2024wqp [ZTF24abjgazf]08:47:06.230+55:56:42.28SN candidate, declining slowly after peak.08:47:06.230+55:56:42.28
TNS2024yfp [ZTF24abmkoqc]08:15:17.174+13:59:14.20SN candidate. Rising for ~ 10 days.08:15:17.174+13:59:14.20SN Ia0.095
TNS2024wdl [ZTF24abizbkp]04:23:36.037+04:22:42.61SN candidate. Light curve increased ~1.4 mag in 1 day, reaching peak. Now fading.04:23:36.037+04:22:42.61
TNS2024wdn [ZTF24abitpxy]08:15:21.319+58:52:47.41SN candidate. Broad-ish light curve, past peak.08:15:21.319+58:52:47.41
TNS2024yfk [ZTF24abmhrjk]02:51:55.479-04:57:33.45Young SN candidate. Rise ~0.2mag in 5 days. Still rising.02:51:55.477-04:57:33.41SN Ia0.09
TNS2024yrl [ZTF24abltiwy]03:17:37.314+24:00:17.48SN candidate. Rising. Marginal detections suggest an initial decline before the rise.03:17:37.314+24:00:17.48
TNS2024yrm [ZTF24abhbrfg]01:32:26.149+48:52:13.85SN candidate. ~ 20day shallow rise. Now seems to be past peak.01:32:26.149+48:52:13.85
TNS2024yrn [ZTF24abjfcxt]02:46:02.623+16:06:54.73SN candidate. Broad light curve. Past peak.02:46:02.623+16:06:54.73
TNS2024yro [ZTF24abhgcak]22:56:48.088-02:13:48.08SN candidate. Past peak. Light curve seems to be flattening.22:56:48.088-02:13:48.08