2022A&A...664A.199L

Query : 2022A&A...664A.199L

2022A&A...664A.199L - Astronomy and Astrophysics, volume 664A199-199 (2022/8-1)

The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc.

LUQUE R., FULTON B.J., KUNIMOTO M., AMADO P.J., GORRINI P., DREIZLER S., HELLIER C., HENRY G.W., MOLAVERDIKHANI K., MORELLO G., PENA-MONINO L., PEREZ-TORRES M., POZUELOS F.J., SHAN Y., ANGLADA-ESCUDE G., BEJAR V.J.S., BERGOND G., BOYLE A.W., CABALLERO J.A., CHARBONNEAU D., CIARDI D.R., DUFOER S., ESPINOZA N., EVERETT M., FISCHER D., HATZES A.P., HENNING T., HESSE K., HOWARD A.W., HOWELL S.B., ISAACSON H., JEFFERS S.V., JENKINS J.M., KANE S.R., KEMMER J., KHALAFINEJAD S., KIDWELL R.C., KOSSAKOWSKI D., LATHAM D.W., LILLO-BOX J., LISSAUER J.J., MONTES D., ORELL-MIQUEL J., PALLE E., POLLACCO D., QUIRRENBACH A., REFFERT S., REINERS A., RIBAS I., RICKER G.R., ROGERS L.A., SANZ-FORCADA J., SCHLECKER M., SCHWEITZER A., SEAGER S., SHPORER A., STASSUN K.G., STOCK S., TAL-OR L., TING E.B., TRIFONOV T., VANAVERBEKE S., VANDERSPEK R., VILLASENOR J., WINN J.N., WINTERS J.G. and ZAPATERO OSORIO M.R.

Abstract (from CDS):

We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77d, a radius of Rb=1.240±0.023R⊕, a mass of Mb=2.14±0.34M⊕, and a bulk density of ρb=6.2±1.0g/cm3, and HD 260655 c, with a period of 5.71d, a radius of Rc=1.533–0.046+0.051R⊕, a mass of Mc=3.09±0.48M⊕, and a bulk density of ρc=4.7–0.8+0.9g/cm3. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.

Abstract Copyright: © R. Luque et al. 2022

Journal keyword(s): planetary systems - techniques: photometric - techniques: radial velocities - stars: late-type - planets and satellites: individual: HD 260655

Simbad objects: 26

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Number of rows : 26
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 BD-17 588 ** 03 01 51.3895517 -16 35 36.110284           M3.5+M3.0 73 0
4 NAME BD-17 588Ab Pl 03 01 51.3936681048 -16 35 36.031178525           ~ 85 0
5 NAME PM J03455+3706b Pl 03 45 33.6408895592 +37 06 43.999247912           ~ 34 0
6 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 793 1
7 HD 45506 PM* 06 28 28.0538658984 +16 14 18.185214912   7.132 6.233     G5 49 0
8 * 23 Gem * 06 36 02.1267210720 +16 47 49.305699744   7.16 6.72     F5 40 0
9 HD 260655 PM* 06 37 10.7988015297 +17 33 53.333221083 12.303 11.104 9.593 8.661 7.718 M0.0V 217 0
10 HD 260655c Pl? 06 37 10.7988015297 +17 33 53.333221083           ~ 21 0
11 HD 260655b Pl 06 37 10.7988015297 +17 33 53.333221083           ~ 23 0
12 NAME G 50-16b Pl 08 02 22.8829177661 +03 20 19.691170937           ~ 30 0
13 NAME L 98-59 b Pl 08 18 07.6214406393 -68 18 46.805365587           ~ 67 0
14 NAME L 98-59 c Pl 08 18 07.6214406393 -68 18 46.805365587           ~ 86 0
15 NAME L 98-59 d Pl 08 18 07.6214406393 -68 18 46.805365587           ~ 98 0
16 * rho01 Cnc e Pl 08 52 35.8111044043 +28 19 50.954994470           ~ 682 1
17 NAME L 678-39b Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 86 0
18 CD-45 5378b Pl 09 44 29.8367689785 -45 46 35.427639685           ~ 86 0
19 NAME L 320-124b Pl 10 14 51.7786855411 -47 09 24.192778106           ~ 223 0
20 G 162-44 PM* 10 18 35.1372361341 -11 43 00.243355403   14.68 13.14 12.84   M4.0 98 0
21 Wolf 437b Pl 12 47 56.6245693190 +09 45 05.035666747           ~ 95 0
22 NAME L 210-70b Pl 20 27 42.0813992356 -56 27 25.151894071           ~ 68 0
23 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1344 0
24 TRAPPIST-1b Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 380 0
25 HD 219134b Pl 23 13 16.9749603608 +57 10 06.083823619           ~ 129 0
26 HD 219134 PM* 23 13 16.9749603608 +57 10 06.083823619 7.460 6.560 5.570 4.76 4.23 K3V 677 1

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