2024MNRAS.527L..47C

Query : 2024MNRAS.527L..47C

2024MNRAS.527L..47C - Mon. Not. R. Astron. Soc., 527, L47-L53 (2024/January-1)

AT2023fhn (the Finch): a luminous fast blue optical transient at a large offset from its host galaxy.

CHRIMES A.A., JONKER P.G., LEVAN A.J., COPPEJANS D.L., GASPARI N., GOMPERTZ B.P., GROOT P.J., MALESANI D.B., MUMMERY A., STANWAY E.R. and WIERSEMA K.

Abstract (from CDS):

Luminous fast blue optical transients (LFBOTs) - the prototypical example being AT 2018cow - are a rare class of events whose origins are poorly understood. They are characterized by rapid evolution, featureless blue spectra at early times, and luminous X-ray and radio emission. LFBOTs thus far have been found exclusively at small projected offsets from star-forming host galaxies. We present Hubble Space Telescope, Gemini, Chandra, and Very Large Array observations of a new LFBOT, AT 2023fhn. The Hubble Space Telescope data reveal a large offset (>3.5 half-light radii) from the two closest galaxies, both at redshift z ∼ 0.24. The location of AT 2023fhn is in stark contrast with previous events, and demonstrates that LFBOTs can occur in a range of galactic environments.

Abstract Copyright: © The Author(s) 2023. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): supernovae: individual: AT 2023fhn - transients: supernovae - transients: tidal disruption events

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CD-28 595 PM* 01 54 50.2703221766 -27 28 35.739139915   12.06 11.51     ~ 138 0
2 AT 2018lug ev 02 00 15.19 +16 47 57.3           ~ 54 0
3 AT 2022tsd ev 03 20 10.863 +08 44 55.63           ~ 18 0
4 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
5 SDSS J100803.73+210422.5 G 10 08 03.73953 +21 04 22.5633           ~ 1 0
6 AT 2023fhn ev 10 08 03.815 +21 04 26.95           ~ 15 0
7 SDSS J100803.87+210425.8 G 10 08 03.87600 +21 04 25.8115           ~ 1 0
8 4C 23.24 Bla 10 14 47.06546648 +23 01 16.5707383   17.85 17.78 16.22   ~ 229 1
9 7C 101358.5+205256 Bla 10 16 44.32210575 +20 37 47.3053485   19.67 19.41 18.67   ~ 91 1
10 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
11 CD-28 11464 Pe* 15 38 59.6479538952 -28 35 36.973634856   12.310 11.797 11.794   A 121 0
12 SN 2020mrf SN* 15 47 54.163 +44 39 07.41           SNII 37 0
13 SN 2018cow SN* 16 16 00.254 +22 16 05.10           SNIb 305 0
14 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 526 0
15 AT 2020xnd ev 22 20 02.030 -02 50 25.30           ~ 66 0

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