2019A&A...628A..39L


Query : 2019A&A...628A..39L

2019A&A...628A..39L - Astronomy and Astrophysics, volume 628A, 39-39 (2019/8-1)

Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization.

LUQUE R., PALLE E., KOSSAKOWSKI D., DREIZLER S., KEMMER J., ESPINOZA N., BURT J., ANGLADA-ESCUDE G., BEJAR V.J.S., CABALLERO J.A., COLLINS K.A., COLLINS K.I., CORTES-CONTRERAS M., DIEZ-ALONSO E., FENG F., HATZES A., HELLIER C., HENNING T., JEFFERS S.V., KALTENEGGER L., KURSTER M., MADDEN J., MOLAVERDIKHANI K., MONTES D., NARITA N., NOWAK G., OFIR A., OSHAGH M., PARVIAINEN H., QUIRRENBACH A., REFFERT S., REINERS A., RODRIGUEZ-LOPEZ C., SCHLECKER M., STOCK S., TRIFONOV T., WINN J.N., ZAPATERO OSORIO M.R., ZECHMEISTER M., AMADO P.J., ANDERSON D.R., BATALHA N.E., BAUER F.F., BLUHM P., BURKE C.J., BUTLER R.P., CALDWELL D.A., CHEN G., CRANE J.D., DRAGOMIR D., DRESSING C.D., DYNES S., JENKINS J.M., KAMINSKI A., KLAHR H., KOTANI T., LAFARGA M., LATHAM D.W., LEWIN P., McDERMOTT S., MONTANES-RODRIGUEZ P., MORALES J.C., MURGAS F., NAGEL E., PEDRAZ S., RIBAS I., RICKER G.R., ROWDEN P., SEAGER S., SHECTMAN S.A., TAMURA M., TESKE J., TWICKEN J.D., VANDERSPECK R., WANG S.X. and WOHLER B.

Abstract (from CDS):

We report the detection of a transiting Earth-size planet around GJ 357, a nearby M2.5 V star, using data from the Transiting Exoplanet Survey Satellite (TESS). GJ 357 b (TOI-562.01) is a transiting, hot, Earth-sized planet (Teq=525±11K) with a radius of Rb=1.217±0.084R and an orbital period of Pb=3.93d. Precise stellar radial velocities from CARMENES and PFS, as well as archival data from HIRES, UVES, and HARPS also display a 3.93-day periodicity, confirming the planetary nature and leading to a planetary mass of Mb=1.84±0.31M. In addition to the radial velocity signal for GJ 357 b, more periodicities are present in the data indicating the presence of two further planets in the system: GJ 357 c, with a minimum mass of Mc=3.40±0.46M in a 9.12d orbit, and GJ 357 d, with a minimum mass of Md=6.1±1.0M in a 55.7d orbit inside the habitable zone. The host is relatively inactive and exhibits a photometric rotation period of Prot=78±2d. GJ 357 b isto date the second closest transiting planet to the Sun, making it a prime target for further investigations such as transmission spectroscopy. Therefore, GJ 357 b represents one of the best terrestrial planets suitable for atmospheric characterization with the upcoming JWST and ground-based ELTs.

Abstract Copyright: © ESO 2019

Journal keyword(s): planetary systems - techniques: photometric - techniques: radial velocities - stars: individual: Gl 357 - stars: late-type

VizieR on-line data: <Available at CDS (J/A+A/628/A39): table1.dat>

Simbad objects: 33

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Number of rows : 33
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME G 268-38b Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 167 0
2 G 268-38 PM* 00 44 59.3309137511 -15 16 17.542839990     14.150 13.801   M4.5 134 0
3 NAME G 268-38c Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 60 0
4 Gaia DR3 5664813824769090944 * 09 36 01.2464522832 -21 39 41.167668060           ~ 1 0
5 Gaia DR3 5664814202726212224 * 09 36 01.5928008720 -21 39 36.170468568           ~ 1 0
6 GJ 357 e Pl? 09 36 01.6372169407 -21 39 38.877606712           ~ 2 0
7 NAME L 678-39d Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 19 0
8 L 678-39 EB* 09 36 01.6372169407 -21 39 38.877606712 13.647 12.48 10.906 9.858 8.577 M2.5V 152 0
9 NAME L 678-39b Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 57 0
10 NAME L 678-39c Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 14 0
11 NAME L 320-124b Pl 10 14 51.7786855411 -47 09 24.192778106           ~ 160 0
12 L 320-124 PM* 10 14 51.7786855411 -47 09 24.192778106       13.067   M4 120 0
13 K2-3 PM* 11 29 20.3917077216 -01 27 17.281697868   13.52 12.17 11.88   M1V 71 0
14 K2-3c Pl 11 29 20.3917077216 -01 27 17.281697868           ~ 39 0
15 K2-3b Pl 11 29 20.3917077216 -01 27 17.281697868           ~ 43 0
16 K2-18 PM* 11 30 14.5177445592 +07 35 18.255348492   15.01 13.50 13.24   dM2.5 91 0
17 K2-18b Pl 11 30 14.5177445592 +07 35 18.255348492           ~ 142 0
18 HD 106315c Pl 12 13 53.3962381416 -00 23 36.553445304           ~ 31 0
19 NAME G 139-21b Pl 17 15 18.9339850845 +04 57 50.066612336           ~ 695 1
20 HD 156384C PM* 17 18 58.8272997802 -34 59 48.612673382 12.96 11.79 10.22 10.05 8.82 M1.5V 214 1
21 BD+48 2893b Pl 19 24 07.7659706688 +49 02 24.928348272           ~ 92 1
22 Kepler-406b Pl 19 27 23.5375431360 +44 58 05.726111052           ~ 63 0
23 Kepler-87 Ro* 19 51 40.0490199888 +46 57 54.425250252           F9 63 2
24 HD 204961 PM* 21 33 33.9751191976 -49 00 32.399427028 11.359 10.176 8.672 7.665 6.479 M2/3V 277 1
25 TRAPPIST-1b Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 229 0
26 TRAPPIST-1f Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 210 0
27 TRAPPIST-1d Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 194 0
28 TRAPPIST-1e Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 257 0
29 TRAPPIST-1c Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 174 0
30 TRAPPIST-1g Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 177 0
31 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 926 0
32 HD 219134b Pl 23 13 16.9749603608 +57 10 06.083823619           ~ 103 0
33 BD-02 5958d Pl 23 27 04.8376907739 -01 17 10.582653030           ~ 44 0

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2023.11.28-10:14:00

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