DRAFT
2023-11-14 14:28:29
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.305....1C
Redshift for the candidate Fast Blue Optical Transient AT2023vth
Authors: Ashley Chrimes (ESA-ESTEC), Peter Jonker (Radboud), Andrew Levan (Radboud), Anna Y. Q. Ho (Cornell)
Keywords: Supernova, Spectroscopy
Abstract:
We report a redshift z=0.0747+/-0.0006 for the host galaxy of AT2023vth, from Gemini GMOS-N spectroscopy.

We report a redshift for the host galaxy of AT2023vth (a candidate FBOT, astronote 2023-297), from Gemini GMOS-N spectroscopy obtained on 12-Nov. The R400 grating, 1" slit, 500s exposures and central wavelength of 675nm were used. The challenging observability close to sunset limited useful observations to those of the host galaxy.

From Halpha, NII and SII emission lines, we determine a redshift z=0.0747+/-0.0006. At this redshift, the peak absolute g-band magnitude of AT2023vth is approx -20. 

We thank the Gemini staff for their help in obtaining these observations. 

Show current TNS values
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 2023vth 17:56:34.401 +08:02:37.32 17:56:34.401 +08:02:37.32 FBOT 0.0747
AstroNote Publication Timestamp Title Authors
2023-297 2023-11-10 22:45:36 ZTF Observations of the Candidate Fast Blue Optical Transient AT2023vth Jason Sevilla, Maggie L. Li, Anna Y. Q. Ho (Cornell)

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