2019A&A...623A.100N

Query : 2019A&A...623A.100N

2019A&A...623A.100N - Astronomy and Astrophysics, volume 623A100-100 (2019/3-1)

A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS.

NIELSEN L.D., BOUCHY F., TURNER O., GILES H., SUAREZ MASCARENO A., LOVIS C., MARMIER M., PEPE F., SEGRANSAN D., UDRY S., OTEGI J.F., OTTONI G., STALPORT M., RICKER G., VANDERSPEK R., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., KANE S.R., WITTENMYER R.A., BOWLER B., CROSSFIELD I., HORNER J., KIELKOPF J., MORTON T., PLAVCHAN P., TINNEY C.G., ZHANG H., WRIGHT D.J., MENGEL M.W., CLARK J.T., OKUMURA J., ADDISON B., CALDWELL D.A., CARTWRIGHT S.M., COLLINS K.A., FRANCIS J., GUERRERO N., HUANG C.X., MATTHEWS E.C., PEPPER J., ROSE M., VILLASENOR J., WOHLER B., STASSUN K., HOWELL S., CIARDI D., GONZALES E., MATSON R., BEICHMAN C. and SCHLIEDER J.

Abstract (from CDS):

The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V=7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415±0.020MJ and a radius of 1.026±0.026RJ. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.

Abstract Copyright: © ESO 2019

Journal keyword(s): planets and satellites: detection - planets and satellites: individual: HD 1397b - planets and satellites: individual: TOI-120 - planets and satellites: individual: TIC 394137592

Simbad objects: 8

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Number of rows : 8
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 HD 1397 PM* 00 17 47.1523790112 -66 21 32.062984452   8.56 7.78     G5III/IV 45 0
2 HD 1397b Pl 00 17 47.1523790112 -66 21 32.062984452           ~ 25 0
3 HD 4113b Pl 00 43 12.5955916128 -37 58 57.477720936           ~ 37 1
4 HD 20782b Pl 03 20 03.5777546706 -28 51 14.660358176           ~ 76 1
5 CoRoT-7b Pl 06 43 49.4690164104 -01 03 46.826642700           ~ 422 1
6 HD 80606b Pl 09 22 37.5768032712 +50 36 13.435326684           ~ 369 1
7 WASP-43b Pl 10 19 38.0088913464 -09 48 22.605801336           ~ 442 1
8 WASP-107b Pl 12 33 32.8441110816 -10 08 46.225572324           ~ 289 0

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