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


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST20:19:37

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 - 2020
#notes
1 NAME G 268-38c Pl 00 44 59.3314993038 -15 16 17.543124886           ~ 15 0
2 G 268-38 PM* 00 44 59.3314993038 -15 16 17.543124886     14.150 13.801   M4.5 69 0
3 NAME G 268-38b Pl 00 44 59.3314993038 -15 16 17.543124886           ~ 74 0
4 Gaia DR2 5664813824769090944 * 09 36 01.2462070336 -21 39 41.166965817           ~ 1 0
5 Gaia DR2 5664814202726212224 * 09 36 01.5928244610 -21 39 36.170029254           ~ 1 0
6 NAME L 678-39c Pl 09 36 01.6372518187 -21 39 38.878281901           ~ 3 0
7 NAME L 678-39d Pl 09 36 01.6372518187 -21 39 38.878281901           ~ 4 0
8 GJ 357 e Pl? 09 36 01.6372518187 -21 39 38.878281901           ~ 1 0
9 NAME L 678-39b Pl 09 36 01.6372518187 -21 39 38.878281901           ~ 12 0
10 L 678-39 PM* 09 36 01.6372518187 -21 39 38.878281901 13.647 12.48 10.906 9.858 8.577 M2.5V 97 0
11 L 320-124 PM* 10 14 51.7783473599 -47 09 24.189733387   15.25 13.52 13.067   M4 64 0
12 NAME L 320-124b Pl 10 14 51.7783473599 -47 09 24.189733387           ~ 82 0
13 K2-3 PM* 11 29 20.3917940095 -01 27 17.279810476   13.52 12.17 11.88   M0.0V 50 0
14 K2-3c Pl 11 29 20.3917940095 -01 27 17.279810476           ~ 24 0
15 K2-3b Pl 11 29 20.3917940095 -01 27 17.279810476           ~ 29 0
16 K2-18b Pl 11 30 14.5176249117 +07 35 18.257210626           ~ 38 0
17 K2-18 PM* 11 30 14.5176249117 +07 35 18.257210626   15.01 13.50 13.24   ~ 39 0
18 HD 106315c Pl 12 13 53.3965594147 -00 23 36.554390504           ~ 10 0
19 NAME G 139-21b Pl 17 15 18.9337265994 +04 57 50.064695682           ~ 533 1
20 HD 156384C PM* 17 18 58.8271844065 -34 59 48.612934284 12.96 11.79 10.22 10.05 8.82 M1.5V 163 1
21 BD+48 2893b Pl 19 24 07.7660110490 +49 02 24.928201112           ~ 70 1
22 Kepler-406b Pl 19 27 23.5375965213 +44 58 05.725246092           ~ 39 0
23 Kepler-87 Ro* 19 51 40.0490992347 +46 57 54.427022288           ~ 51 2
24 HD 204961 PM* 21 33 33.9749932664 -49 00 32.403471949 11.359 10.176 8.672 7.665 6.479 M2/3V 209 1
25 K2-112b Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 116 0
26 K2-112f Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 105 0
27 K2-112d Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 108 0
28 K2-112e Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 127 0
29 K2-112c Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 98 0
30 K2-112g Pl 23 06 29.3684052886 -05 02 29.031690445           ~ 97 0
31 TRAPPIST-1 LM* 23 06 29.3684052886 -05 02 29.031690445     18.798 16.466 14.024 M7.5e 478 0
32 HD 219134b Pl 23 13 16.9747821012 +57 10 06.076520993           ~ 57 0
33 BD-02 5958d Pl 23 27 04.8376505956 -01 17 10.585614768           ~ 13 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-20:19:37

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