2022MNRAS.510.5035S

Query : 2022MNRAS.510.5035S

2022MNRAS.510.5035S - Mon. Not. R. Astron. Soc., 510, 5035-5049 (2022/March-2)

K2-99 revisited: a non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant.

SMITH A.M.S., BRETON S.N., CSIZMADIA S., DAI F., GANDOLFI D., GARCIA R.A., HOWARD A.W., ISAACSON H., KORTH J., LAM K.W.F., MATHUR S., NOWAK G., PEREZ HERNANDEZ F., PERSSON C.M., ALBRECHT S.H., BARRAGAN O., CABRERA J., COCHRAN W.D., DEEG H.J., FRIDLUND M., GEORGIEVA I.Y., GOFFO E., GUENTHER E.W., HATZES A.P., KABATH P., LIVINGSTON J.H., LUQUE R., PALLE E., REDFIELD S., RODLER F., SERRANO L.M. and VAN EYLEN V.

Abstract (from CDS):

We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to refine the stellar properties. We find K2-99 to be significantly smaller than previously thought, with R* = 2.55 ± 0.02 R☉. The new light curve also contains four transits of K2-99 b, which we use to improve our knowledge of the planetary properties. We find the planet to be a non-inflated warm Jupiter, with Rb = 1.06 ± 0.01 RJup. 60 new radial velocity measurements from HARPS, HARPS-N, and HIRES enable the determination of the orbital parameters of K2-99 c, which were previously poorly constrained. We find that this outer planet has a minimum mass Mcsin ic = 8.4 ± 0.2 MJup, and an eccentric orbit (ec = 0.210 ± 0.009) with a period of 522.2 ± 1.4 d. Upcoming TESS observations in 2022 have a good chance of detecting the transit of this planet, if the mutual inclination between the two planetary orbits is small.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): planetary systems - planets and satellites: detection - planets and satellites: individual: K2-99 b - planets and satellites: individual: K2-99 c

Simbad objects: 9

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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 CoRoT-20 * 06 30 52.9022402976 +00 13 36.858436428   15.41 14.66 14.60 13.69 ~ 32 2
2 HAT-P-13b Pl 08 39 31.8072358440 +47 21 07.273799280           ~ 128 1
3 NAME L 678-39d Pl 09 36 01.6372169407 -21 39 38.877606712           ~ 27 0
4 BD-04 3588b Pl 13 55 05.7031605792 -05 26 32.949326652           ~ 28 0
5 K2-99c Pl 13 55 05.7031605792 -05 26 32.949326652           ~ 1 0
6 BD-04 3588 * 13 55 05.7031605792 -05 26 32.949326652   11.75 11.15     F7 37 0
7 Kepler-108 ** 19 38 14.20056 +46 03 44.3700       12.485   ~ 103 0
8 Kepler-47c Pl 19 41 11.4983203032 +46 55 13.707336288           ~ 79 1
9 Kepler-419 EB* 19 41 40.2991189536 +51 11 05.168339880   13.498 13.036 13.088   ~ 98 1

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