2020A&A...642A.236K


Query : 2020A&A...642A.236K

2020A&A...642A.236K - Astronomy and Astrophysics, volume 642A, 236-236 (2020/10-1)

Discovery of a hot, transiting, Earth-sized planet and a second temperate, non-transiting planet around the M4 dwarf GJ 3473 (TOI-488).

KEMMER J., STOCK S., KOSSAKOWSKI D., KAMINSKI A., MOLAVERDIKHANI K., SCHLECKER M., CABALLERO J.A., AMADO P.J., ASTUDILLO-DEFRU N., BONFILS X., CIARDI D., COLLINS K.A., ESPINOZA N., FUKUI A., HIRANO T., JENKINS J.M., LATHAM D.W., MATTHEWS E.C., NARITA N., PALLE E., PARVIAINEN H., QUIRRENBACH A., REINERS A., RIBAS I., RICKER G., SCHLIEDER J.E., SEAGER S., VANDERSPEK R., WINN J.N., ALMENARA J.M., BEJAR V.J.S., BLUHM P., BOUCHY F., BOYD P., CHRISTIANSEN J.L., CIFUENTES C., CLOUTIER R., COLLINS K.I., CORTES-CONTRERAS M., CROSSFIELD I.J.M., CROUZET N., DE LEON J.P., DELLA-ROSE D.D., DELFOSSE X., DREIZLER S., ESPARZA-BORGES E., ESSACK Z., FORVEILLE T., FIGUEIRA P., GALADI-ENRIQUEZ D., GAN T., GLIDDEN A., GONZALES E.J., GUERRA P., HARAKAWA H., HATZES A.P., HENNING T., HERRERO E., HODAPP K., HORI Y., HOWELL S.B., IKOMA M., ISOGAI K., JEFFERS S.V., KURSTER M., KAWAUCHI K., KIMURA T., KLAGYIVIK P., KOTANI T., KUROKAWA T., KUSAKABE N., KUZUHARA M., LAFARGA M., LIVINGSTON J.H., LUQUE R., MATSON R., MORALES J.C., MORI M., MUIRHEAD P.S., MURGAS F., NISHIKAWA J., NISHIUMI T., OMIYA M., REFFERT S., RODRIGUEZ LOPEZ C., SANTOS N.C., SCHOFER P., SCHWARZ R.P., SHIAO B., TAMURA M., TERADA Y., TWICKEN J.D., UEDA A., VIEVARD S., WATANABE N. and ZECHMEISTER M.

Abstract (from CDS):

We present the confirmation and characterisation of GJ 3473 b (G 50-16, TOI-488.01), a hot Earth-sized planet orbiting an M4 dwarf star, whose transiting signal (P=1.1980035±0.0000018 d) was first detected by the Transiting Exoplanet Survey Satellite (TESS). Through a joint modelling of follow-up radial velocity observations with CARMENES, IRD, and HARPS together with extensive ground-based photometric follow-up observations with LCOGT, MuSCAT, and MuSCAT2, we determined a precise planetary mass, Mb=1.86±0.30M, and radius, Rb=1.264±0.050R. Additionally, we report the discovery of a second, temperate, non-transiting planet in the system, GJ 3473 c, which has a minimum mass, Mcsini=7.41±0.91M, and orbital period, Pc=15.509±0.033d. The inner planet of the system, GJ 3473 b, is one of the hottest transiting Earth-sized planets known thus far, accompanied by a dynamical mass measurement, which makes it a particularly attractive target for thermal emission spectroscopy.

Abstract Copyright: © ESO 2020

Journal keyword(s): planetary systems - planets and satellites: detection - techniques: radial velocities - techniques: photometric - stars: late-type - stars: individual: G 50-16

VizieR on-line data: <Available at CDS (J/A+A/642/A236): table1.dat>

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME G 268-38c Pl 00 44 59.3314993038 -15 16 17.543124886           ~ 30 0
2 NAME G 268-38b Pl 00 44 59.3314993038 -15 16 17.543124886           ~ 104 0
3 LP 544-12 PM* 08 02 20.6440109290 +03 19 43.541131899   18.6   16.8   M6 14 0
4 GJ 3473 c Pl? 08 02 22.8828841960 +03 20 19.692275006           ~ 2 0
5 GJ 3473 b Pl? 08 02 22.8828841960 +03 20 19.692275006           ~ 3 0
6 G 50-16 PM* 08 02 22.8828841960 +03 20 19.692275006   15.24   13.44   M4V 21 0
7 NAME L 98-59 d Pl 08 18 07.6215096918 -68 18 46.799548510           ~ 12 0
8 NAME L 98-59 c Pl 08 18 07.6215096918 -68 18 46.799548510           ~ 13 0
9 NAME L 678-39b Pl 09 36 01.6372518187 -21 39 38.878281901           ~ 25 0
10 LSPM J1008+6916 PM* 10 08 51.8069671684 +69 16 35.564173019       11.065   M0.5Ve 15 0
11 LSPM J1008+6916b Pl 10 08 51.8069671684 +69 16 35.564173019           ~ 5 0
12 L 320-124 PM* 10 14 51.7783473599 -47 09 24.189733387       13.067   M4 81 0
13 NAME L 320-124b Pl 10 14 51.7783473599 -47 09 24.189733387           ~ 106 0
14 G 162-44 PM* 10 18 35.1370942089 -11 43 00.241585751   14.68 13.14 12.84   M4.0 22 0
15 BD-07 4003c Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 100 1
16 G 226-66 PM* 17 35 34.4785948351 +61 40 53.626580217   11.40 9.98 9.52 8.01 M1V 117 0
17 BD+18 3421b Pl 17 37 53.3467427850 +18 35 30.160739363           ~ 8 0
18 Kepler-138d Pl 19 21 31.5681629849 +43 17 34.680374646           ~ 47 0
19 Kepler-138c Pl 19 21 31.5681629849 +43 17 34.680374646           ~ 48 0
20 NAME L 210-70b Pl 20 27 42.0813988928 -56 27 25.156653917           ~ 6 0
21 L 210-70 PM* 20 27 42.0813988928 -56 27 25.156653917       11.83   M2.5V 23 0
22 HD 217987c Pl? 23 05 52.0354545522 -35 51 11.058757520           ~ 2 0
23 TRAPPIST-1h Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 83 0
24 TRAPPIST-1b Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 149 0
25 TRAPPIST-1g Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 129 0
26 TRAPPIST-1c Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 119 0
27 TRAPPIST-1f Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 143 0
28 TRAPPIST-1d Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 141 0
29 TRAPPIST-1e Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 167 0
30 CD-60 8051 PM* 23 20 07.5245773814 -60 03 54.644541934   12.45 11.02 10.584   M2V 24 0

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2021.07.31-07:45:41

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