2021A&A...653A.105O


Query : 2021A&A...653A.105O

2021A&A...653A.105O - Astronomy and Astrophysics, volume 653A, 105-105 (2021/9-1)

TESS and HARPS reveal two sub-Neptunes around TOI 1062.

OTEGI J.F., BOUCHY F., HELLED R., ARMSTRONG D.J., STALPORT M., PSARIDI A., DELISLE J.-B., STASSUN K.G., DELGADO-MENA E., SANTOS N.C., HARA N.C., COLLINS K., GANDHI S., DORN C., BROGI M., FRIDLUND M., OSBORN H.P., HOYER S., UDRY S., HOJJATPANAH S., NIELSEN L.D., DUMUSQUE X., ADIBEKYAN V., CONTI D., SCHWARZ R., WANG G., FIGUEIRA P., LILLO-BOX J., HADJIGEORGHIOU A., BAYLISS D., STROM P.A., SOUSA S.G., BARRADO D., OSBORN A., BARROS S.C.C., BROWN D.J.A., EASTMAN J.D., CIARDI D.R., VANDERBURG A., GOEKE R.F., GUERRERO N.M., BOYD P.T., CALDWELL D.A., HENZE C.E., McLEAN B., RICKER G., VANDERSPEK R., LATHAM D.W., SEAGER S., WINN J. and JENKINS J.M.

Abstract (from CDS):

The Transiting Exoplanet Survey Satellite (TESS) mission was designed to perform an all-sky search of planets around bright and nearby stars. Here we report the discovery of two sub-Neptunes orbiting around TOI 1062 (TIC 299799658), a V=10.25 G9V star observed in the TESS Sectors 1, 13, 27, and 28. We use precise radial velocity observations from HARPS to confirm and characterize these two planets. TOI 1062b has a radius of 2.265–0.091+0.096R, a mass of 10.15±0.8M, and an orbital period of 4.1130±0.0015days. The second planet is not transiting, has a minimum mass of 9.78–1.18+1.26M and is near the 2:1 mean motion resonance with the innermost planet with an orbital period of 7.972–0.024+0.018days. We performed a dynamical analysis to explore the proximity of the system to this resonance, and to attempt further constraining the orbital parameters. The transiting planet has a mean density of 4.85–0.74+0.84g/cm3 and an analysis of its internal structure reveals that it is expected to have a small volatile envelope accounting for 0.35% of the mass at most. The star's brightness and the proximity of the inner planet to what is know as the radius gap make it an interesting candidate for transmission spectroscopy, which could further constrain the composition and internal structure of TOI 1062b.

Abstract Copyright: © ESO 2021

Journal keyword(s): planets and satellites: general - planets and satellites: detection - planets and satellites: composition

Simbad objects: 11

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Number of rows : 11
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 TOI-125d Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 9 0
2 TOI-125b Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 10 0
3 TOI-125c Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 13 0
4 TOI-849b Pl 01 54 51.7040408544 -29 25 18.468394788           ~ 37 0
5 CD-78 83 PM* 02 32 28.4944084848 -78 01 25.733032968   11.02 10.25     K0 10 0
6 CD-78 83b Pl 02 32 28.4944084848 -78 01 25.733032968           ~ 6 0
7 CD-78 83c Pl 02 32 28.4944084848 -78 01 25.733032968           ~ 1 0
8 * rho01 Cnc e Pl 08 52 35.8111044043 +28 19 50.954994470           ~ 572 1
9 Ross 905b Pl 11 42 11.0933350978 +26 42 23.650782778           ~ 805 1
10 TRAPPIST-1f Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 220 0
11 CD-38 15670b Pl 23 54 40.2073116552 -37 37 40.524416508           ~ 39 0

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