2023MNRAS.519.5637K

Query : 2023MNRAS.519.5637K

2023MNRAS.519.5637K - Mon. Not. R. Astron. Soc., 519, 5637-5655 (2023/March-2)

Radial velocity confirmation of a hot super-Neptune discovered by TESS with a warm Saturn-mass companion.

KNUDSTRUP E., GANDOLFI D., NOWAK G., PERSSON C.M., FURLAN E., LIVINGSTON J., MATTHEWS E., LUNDKVIST M.S., WINTHER M.L., RORSTED J.L., ALBRECHT S.H., GOFFO E., CARLEO I., DEEG H.J., COLLINS K.A., NARITA N., ISAACSON H., REDFIELD S., DAI F., HIRANO T., MURPHY J.M.A., BEARD C., BUCHHAVE L.A., CARY S., CHONTOS A., CROSSFIELD I., COCHRAN W.D., CONTI D., DALBA P.A., ESPOSITO M., FAJARDO-ACOSTA S., GIACALONE S., GRUNBLATT S.K., GUERRA P., HATZES A.P., HOLCOMB R., HORTA F.G., HOWARD A.W., HUBER D., JENKINS J.M., KABATH P., KANE S., KORTH J., LAM K.W.F., LESTER K.V., MATSON R., McLEOD K.K., ORELL-MIQUEL J., MURGAS F., PALLE E., POLANSKI A.S., RICKER G., ROBERTSON P., RUBENZAHL R., SCHLIEDER J.E., SEAGER S., SMITH A.M.S., TENENBAUM P., TURTELBOOM E., VANDERSPEK R., WEISS L. and WINN J.

Abstract (from CDS):

We report the discovery and confirmation of the planetary system TOI-1288. This late G dwarf harbours two planets: TOI-1288 b and TOI-1288 c. We combine TESS space-borne and ground-based transit photometry with HARPS-N and HIRES high-precision Doppler measurements, which we use to constrain the masses of both planets in the system and the radius of planet b. TOI-1288 b has a period of $2.699835^{+0.000004}_{-0.000003}$ d, a radius of 5.24 ± 0.09 R⊕, and a mass of 42 ± 3 M⊕, making this planet a hot transiting super-Neptune situated right in the Neptunian desert. This desert refers to a paucity of Neptune-sized planets on short period orbits. Our 2.4-yr-long Doppler monitoring of TOI-1288 revealed the presence of a Saturn-mass planet on a moderately eccentric orbit ($0.13^{+0.07}_{-0.09}$) with a minimum mass of 84 ± 7 M⊕ and a period of $443^{+11}_{-13}$ d. The five sectors worth of TESS data do not cover our expected mid-transit time for TOI-1288 c, and we do not detect a transit for this planet in these sectors.

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

Journal keyword(s): techniques: photometric - techniques: radial velocities - planets and satellites: detection

Simbad objects: 12

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Number of rows : 12
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 WASP-156b Pl 02 11 07.6236440160 +02 25 04.878446484           K3 50 0
2 TOI-532b Pl 05 40 19.1883815811 +11 33 46.083967315           ~ 13 0
3 NAME PM J08024+6447b Pl 08 02 26.5505560224 +64 47 48.930101304           ~ 23 0
4 TOI-674b Pl 10 58 20.9850496085 -36 51 29.136045782           ~ 34 0
5 HATS-7b Pl 13 55 25.6669039416 -21 12 27.724490244           ~ 39 0
6 Kepler-101b Pl 18 53 01.3205511624 +48 21 18.784380528           ~ 52 0
7 TOI-1288c Pl 20 52 39.9782325840 +65 36 32.685640632           ~ 3 0
8 TOI-1288b Pl 20 52 39.9782325840 +65 36 32.685640632           ~ 11 0
9 TOI-1288 MS* 20 52 39.9782325840 +65 36 32.685640632   11.38 10.44     ~ 17 0
10 NGTS-14Ab Pl 21 54 04.2264344952 -38 22 38.794127412           ~ 8 0
11 K2-55b Pl 22 15 00.4644231816 -17 15 02.537027892           ~ 20 0
12 * 51 Peg b Pl 22 57 27.9804852576 +20 46 07.797040104           ~ 744 1

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