2022A&A...659A..17K

Query : 2022A&A...659A..17K

2022A&A...659A..17K - Astronomy and Astrophysics, volume 659A17-17 (2022/3-1)

Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b.

KEMMER J., DREIZLER S., KOSSAKOWSKI D., STOCK S., QUIRRENBACH A., CABALLERO J.A., AMADO P.J., COLLINS K.A., ESPINOZA N., HERRERO E., JENKINS J.M., LATHAM D.W., LILLO-BOX J., NARITA N., PALLE E., REINERS A., RIBAS I., RICKER G., RODRIGUEZ E., SEAGER S., VANDERSPEK R., WELLS R., WINN J., ACEITUNO F.J., BEJAR V.J.S., BARCLAY T., BLUHM P., CHATURVEDI P., CIFUENTES C., COLLINS K.I., CORTES-CONTRERAS M., DEMORY B.-O., FAUSNAUGH M.M., FUKUI A., GOMEZ MAQUEO CHEW Y., GALADI-ENRIQUEZ D., GAN T., GILLON M., GOLOVIN A., HATZES A.P., HENNING T., HUANG C., JEFFERS S.V., KAMINSKI A., KUNIMOTO M., KURSTER M., LOPEZ-GONZALEZ M.J., LAFARGA M., LUQUE R., McCORMAC J., MOLAVERDIKHANI K., MONTES D., MORALES J.C., PASSEGGER V.M., REFFERT S., SABIN L., SCHOFER P., SCHANCHE N., SCHLECKER M., SCHROFFENEGGER U., SCHWARZ R.P., SCHWEITZER A., SOTA A., TENENBAUM P., TRIFONOV T., VANAVERBEKE S. and ZECHMEISTER M.

Abstract (from CDS):

We report the discovery of GJ 3929 b, a hot Earth-sized planet orbiting the nearby M3.5 V dwarf star, GJ 3929 (G 180-18, TOI-2013). Joint modelling of photometric observations from TESS sectors 24 and 25 together with 73 spectroscopic observations from CARMENES and follow-up transit observations from SAINT-EX, LCOGT, and OSN yields a planet radius of Rb = 1.150 ± 0.040 R⊕, a mass of Mb = 1.21 ± 0.42 M⊕, and an orbital period of Pb = 2.6162745 ± 0.0000030 d. The resulting density of ρb = 4.4 ± 1.6 g cm–3 is compatible with the Earth's mean density of about 5.5 g cm–3. Due to the apparent brightness of the host star (J = 8.7 mag) and its small size, GJ 3929 b is a promising target for atmospheric characterisation with the JWST. Additionally, the radial velocity data show evidence for another planet candidate with P[c] = 14.303 ± 0.035 d, which is likely unrelated to the stellar rotation period, Prot = 122 ± 13 d, which we determined from archival HATNet and ASAS-SN photometry combined with newly obtained TJO data.

Abstract Copyright: © ESO 2022

Journal keyword(s): planetary systems - techniques: radial velocities - techniques: photometric - stars: individual: GJ 3929 - stars: late-type - planets and satellites: detection

VizieR on-line data: <Available at CDS (J/A+A/659/A17): tableg1.dat>

Simbad objects: 9

goto Full paper

goto View the references in ADS

Number of rows : 9
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 NAME G 268-38c Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 95 0
2 NAME G 245-61b Pl 02 57 18.2595506687 +76 33 11.253543067           ~ 41 0
3 NAME L 231-32b Pl 04 33 39.7200127728 -51 57 22.435373160           ~ 49 0
4 NAME G 50-16b Pl 08 02 22.8829177661 +03 20 19.691170937           ~ 30 0
5 NAME L 98-59 b Pl 08 18 07.6214406393 -68 18 46.805365587           ~ 67 0
6 NAME L 678-39b Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 86 0
7 NAME G 180-18b Pl 15 58 18.7976355993 +35 24 24.279816765           ~ 28 0
8 G 180-18 PM* 15 58 18.7976355993 +35 24 24.279816765   14.33   12.421   M3.5V 65 0
9 NAME L 210-70b Pl 20 27 42.0813992356 -56 27 25.151894071           ~ 68 0

To bookmark this query, right click on this link: simbad:objects in 2022A&A...659A..17K and select 'bookmark this link' or equivalent in the popup menu