2020A&A...636A..58A

Query : 2020A&A...636A..58A

2020A&A...636A..58A - Astronomy and Astrophysics, volume 636A, 58-58 (2020/4-1)

A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS .

ASTUDILLO-DEFRU N., CLOUTIER R., WANG S.X., TESKE J., BRAHM R., HELLIER C., RICKER G., VANDERSPEK R., LATHAM D., SEAGER S., WINN J.N., JENKINS J.M., COLLINS K.A., STASSUN K.G., ZIEGLER C., ALMENARA J.M., ANDERSON D.R., ARTIGAU E., BONFILS X., BOUCHY F., BRICENO C., BUTLER R.P., CHARBONNEAU D., CONTI D.M., CRANE J., CROSSFIELD I.J.M., DAVIES M., DELFOSSE X., DIAZ R.F., DOYON R., DRAGOMIR D., EASTMAN J.D., ESPINOZA N., ESSACK Z., FENG F., FIGUEIRA P., FORVEILLE T., GAN T., GLIDDEN A., GUERRERO N., HART R., HENNING T., HORCH E.P., ISOPI G., JENKINS J.S., JORDAN A., KIELKOPF J.F., LAW N., LOVIS C., MALLIA F., MANN A.W., DE MEDEIROS J.R., MELO C., MENNICKENT R.E., MIGNON L., MURGAS F., NUSDEO D.A., PEPE F., RELLES H.M., ROSE M., SANTOS N.C., SEGRANSAN D., SHECTMAN S., SHPORER A., SMITH J.C., TORRES P., UDRY S., VILLASENOR J., WINTERS J.G. and ZHOU G.

Abstract (from CDS):

We report the detection of a transiting super-Earth-sized planet (R=1.39±0.09R⊕) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V=11, K=7.1) located at 25.15±0.02pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60±0.56M⊕ and thus the bulk density to be 1.74–0.33+0.44 times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.

Abstract Copyright: © ESO 2020

Journal keyword(s): stars: individual: L 168-9 - planetary systems - stars: late-type - techniques: photometric - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/636/A58): tableb1.dat tableb2.dat>

Simbad objects: 21

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Number of rows : 21
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 HD 3167b Pl 00 34 57.5242131960 +04 22 53.284093032           ~ 65 0
2 NAME G 268-38c Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 63 0
3 K2-106b Pl 00 52 19.1415736296 +10 47 40.906374828           ~ 52 0
4 HD 15337b Pl 02 27 28.3781273256 -27 38 06.736755624           ~ 23 0
5 NAME BD-17 588Ab Pl 03 01 51.3936681048 -16 35 36.031178525           ~ 52 0
6 L 98-59 PM* 08 18 07.6214406393 -68 18 46.805365587   13.22 11.685 11.294   M3V 91 0
7 NAME L 98-59 c Pl 08 18 07.6214406393 -68 18 46.805365587           ~ 49 0
8 NAME L 678-39b Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 60 0
9 NAME L 320-124b Pl 10 14 51.7786855411 -47 09 24.192778106           ~ 169 0
10 BD-05 3504b Pl 12 27 29.5846968120 -06 43 18.766944228           ~ 43 0
11 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 1860 1
12 HD 213885b Pl 22 35 56.3150949216 -59 51 52.075466892           ~ 28 0
13 NAME L 119-213b Pl 22 41 58.1171811377 -69 10 08.320741850           ~ 103 0
14 BD-15 6276b Pl 22 48 07.5636746640 -14 29 40.842154644           ~ 20 0
15 TRAPPIST-1b Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 256 0
16 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 995 0
17 HD 219134b Pl 23 13 16.9749603608 +57 10 06.083823619           ~ 104 0
18 CD-60 8051 PM* 23 20 07.5245143451 -60 03 54.644648069   12.45 11.02 10.584   M2V 45 0
19 CD-60 8051b Pl 23 20 07.5245143451 -60 03 54.644648069           ~ 39 0
20 K2-141b Pl 23 23 39.9709098120 -01 11 21.448681332           ~ 68 0
21 BD-02 5958b Pl 23 27 04.8376907739 -01 17 10.582653030           ~ 61 0

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