2023MNRAS.518L..80D

Query : 2023MNRAS.518L..80D

2023MNRAS.518L..80D - Mon. Not. R. Astron. Soc., 518, L80-L82 (2023/January-1)

Additional evidence that Fomalhaut b might be a non-exoplanet.

DEL VECCHIO A. and STONE J.R.

Abstract (from CDS):

Fomalhaut b is an extrasolar object that was imaged directly in 2008. Its status since has changed from exoplanet - including super-Earth and low-mass candidates - to neutron star to dust cloud, generating contention, controversy, and confusion. We contribute to the discussion by reporting additional evidence that, given a set containing celestial objects classified as exoplanets, Fomalhaut b might be a non-member. We conducted a principal component (PC) analysis on a data set containing 425 extrasolar objects and 7 variables and found a single isolated point in PC space representing Fomalhaut b. Whatever its existential status, Fomalhaut b is characterized by properties very different from those characterizing exoplanets.

Abstract Copyright: © The Author(s) 2022. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): astrobiology - methods: data analysis - planets and satellites: fundamental parameters

Simbad objects: 14

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Number of rows : 14
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-30 1812b Pl 04 25 29.0166589296 -30 36 01.610731368           ~ 104 1
2 K2-266c Pl 10 31 44.5056089208 +00 56 15.269139996           ~ 11 0
3 NAME OGLE-TR-132b Pl 10 50 34.5943868112 -61 57 26.138690064           ~ 105 1
4 NAME OGLE-TR-56b Pl 17 56 35.5016678064 -29 32 21.479240220           ~ 202 1
5 Kepler-1656 Er* 18 57 53.3246033136 +39 54 42.531984144   12.016 11.252 11.096   G6V 81 0
6 NAME V672 Lyr b Pl 19 04 09.8515616256 +36 37 57.446680296           ~ 354 1
7 Kepler-51b Pl 19 45 55.1428629456 +49 56 15.650520684           ~ 110 1
8 Kepler-51c Pl 19 45 55.1428629456 +49 56 15.650520684           ~ 63 1
9 Kepler-39 Er* 19 47 50.4745594512 +46 02 03.499726272   15.117 14.496 14.43   F8V 63 1
10 HD 189733b Pl 20 00 43.7129433648 +22 42 39.073143456           ~ 1610 1
11 WASP-2b Pl 20 30 54.1282355304 +06 25 46.341284844           ~ 112 1
12 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 2037 1
13 * alf PsA b Pl 22 57 39.04625 -29 37 20.0533           ~ 210 1
14 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1303 3

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