2024NatAs...8..865G

Query : 2024NatAs...8..865G

2024NatAs...8..865G - Nature Astronomy, 8, 865-878 (2024/July-0)

Detection of an Earth-sized exoplanet orbiting the nearby ultracool dwarf star SPECULOOS-3.

GILLON M., PEDERSEN P.P., RACKHAM B.V., DRANSFIELD G., DUCROT E., BARKAOUI K., BURDANOV A.Y., SCHROFFENEGGER U., GOMEZ MAQUEO CHEW Y., LEDERER S.M., ALONSO R., BURGASSER A.J., HOWELL S.B., NARITA N., DE WIT J., DEMORY B.-O., QUELOZ D., TRIAUD A.H.M.J., DELREZ L., JEHIN E., HOOTON M.J., GARCIA L.J., JANO MUNOZ C., MURRAY C.A., POZUELOS F.J., SEBASTIAN D., TIMMERMANS M., THOMPSON S.J., ZUNIGA-FERNANDEZ S., ACEITUNO J., AGANZE C., AMADO P.J., BAYCROFT T., BENKHALDOUN Z., BERARDO D., BOLMONT E., CLARK C.A., DAVIS Y.T., DAVOUDI F., DE BEURS Z.L., DE LEON J.P., IKOMA M., IKUTA K., ISOGAI K., FUKUDA I., FUKUI A., GERASIMOV R., GHACHOUI M., GUNTHER M.N., HASLER S., HAYASHI Y., HENG K., HU R., KAGETANI T., KAWAI Y., KAWAUCHI K., KITZMANN D., KOLL D.D.B., LENDL M., LIVINGSTON J.H., LYU X., MEIER VALDES E.A., MORI M., McCORMAC J.J., MURGAS F., NIRAULA P., PALLE E., PLAUCHU-FRAYN I., REBOLO R., SABIN L., SCHACKEY Y., SCHANCHE N., SELSIS F., SOTA A., STALPORT M., STANDING M.R., STASSUN K.G., TAMURA M., TERADA Y., THEISSEN C.A., TURBET M., VAN GROOTEL V., VARAS R., WATANABE N. and ZONG LANG F.

Abstract (from CDS):

Located at the bottom of the main sequence, ultracool dwarf stars are widespread in the solar neighbourhood. Nevertheless, their extremely low luminosity has left their planetary population largely unexplored, and only one of them, TRAPPIST-1, has so far been found to host a transiting planetary system. In this context, we present the SPECULOOS project's detection of an Earth-sized planet in a 17 h orbit around an ultracool dwarf of M6.5 spectral type located 16.8 pc away. The planet's high irradiation (16 times that of Earth) combined with the infrared luminosity and Jupiter-like size of its host star make it one of the most promising rocky exoplanet targets for detailed emission spectroscopy characterization with JWST. Indeed, our sensitivity study shows that just ten secondary eclipse observations with the Mid-InfraRed Instrument/Low-Resolution Spectrometer on board JWST should provide strong constraints on its atmospheric composition and/or surface mineralogy.


Abstract Copyright: 2024 The Author(s), under exclusive licence to Springer Nature Limited

Journal keyword(s):

Simbad objects: 19

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Number of rows : 19
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 G 158-27 PM* 00 06 43.1973190107 -07 32 17.019101068     13.837 13.605 10.15 M5.5V 257 0
2 NAME Teegarden's Star LM* 02 53 00.8917932409 +16 52 52.632190137   17.21 15.14 13.03 10.65 dM6 207 0
3 NAME BD-17 588Ab Pl 03 01 51.3936681048 -16 35 36.031178525           ~ 85 0
4 NAME BD-17 588Ac Pl? 03 01 51.3936681048 -16 35 36.031178525           ~ 38 0
5 LP 890-9 PM* 04 16 31.1617564071 -28 18 52.954336524     17.47     M6.0 25 0
6 NAME UPM J0505-4756b Pl 05 05 14.4284259960 -47 56 15.526276908           ~ 25 0
7 HD 260655b Pl 06 37 10.7988015297 +17 33 53.333221083           ~ 23 0
8 LP 783-2 PM* 07 40 19.3718248157 -17 24 45.912945536   17.6 16.696 14.695 12.37 M6.5Ve 98 0
9 NAME L 320-124b Pl 10 14 51.7786855411 -47 09 24.192778106           ~ 223 0
10 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
11 Ross 128 PM* 11 47 44.3972681420 +00 48 16.400337591 14.223 12.905 11.153 9.859 8.184 dM4 484 0
12 Wolf 437b Pl 12 47 56.6245693190 +09 45 05.035666747           ~ 95 0
13 VB 8 LM* 16 55 35.2557374336 -08 23 40.753073075   18.7 16.916 14.566 12.24 M7Ve 457 0
14 NAME SPECULOOS-3 b Pl 20 49 27.4405195157 +33 36 50.968630035           ~ 6 0
15 LSPM J2049+3336 Pe* 20 49 27.4405195157 +33 36 50.968630035   19.0   16.4   M6.5V 18 0
16 NAME L 119-213b Pl 22 41 58.1171811377 -69 10 08.320741850           ~ 146 0
17 TRAPPIST-1c Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 282 0
18 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0
19 TRAPPIST-1b Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 380 0

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