2019AJ....158..177Q

Query : 2019AJ....158..177Q

2019AJ....158..177Q - Astron. J., 158, 177-177 (2019/November-0)

Near-resonance in a system of sub-Neptunes from TESS.

QUINN S.N., BECKER J.C., RODRIGUEZ J.E., HADDEN S., HUANG C.X., MORTON T.D., ADAMS F.C., ARMSTRONG D., EASTMAN J.D., HORNER J., KANE S.R., LISSAUER J.J., TWICKEN J.D., VANDERBURG A., WITTENMYER R., RICKER G.R., VANDERSPEK R.K., LATHAM D.W., SEAGER S., WINN J.N., JENKINS J.M., AGOL E., BARKAOUI K., BEICHMAN C.A., BOUCHY F., BOUMA L.G., BURDANOV A., CAMPBELL J., CARLINO R., CARTWRIGHT S.M., CHARBONNEAU D., CHRISTIANSEN J.L., CIARDI D., COLLINS K.A., COLLINS K.I., CONTI D.M., CROSSFIELD I.J.M., DAYLAN T., DITTMANN J., DOTY J., DRAGOMIR D., DUCROT E., GILLON M., GLIDDEN A., GOEKE R.F., GONZALES E.J., HELMINIAK K.G., HORCH E.P., HOWELL S.B., JEHIN E., JENSEN E.L.N., KIELKOPF J.F., KRISTIANSEN M.H., LAW N., MANN A.W., MARMIER M., MATSON R.A., MATTHEWS E., MAZEH T., MORI M., MURGAS F., MURRAY C., NARITA N., NIELSEN L.D., OTTONI G., PALLE E., PAWLASZEK R., PEPE F., DE LEON J.P., POZUELOS F.J., RELLES H.M., SCHLIEDER J.E., SEBASTIAN D., SEGRANSAN D., SHPORER A., STASSUN K.G., TAMURA M., UDRY S., WAITE I., WINTERS J.G. and ZIEGLER C.

Abstract (from CDS):

We report the Transiting Exoplanet Survey Satellite detection of a multi-planet system orbiting the V = 10.9 K0 dwarf TOI-125. We find evidence for up to five planets, with varying confidence. Three transit signals with high signal-to-noise ratio correspond to sub-Neptune-sized planets (2.76, 2.79, and 2.94 R⊕), and we statistically validate the planetary nature of the two inner planets (Pb = 4.65 days, Pc = 9.15 days). With only two transits observed, we report the outer object (P.03 = 19.98 days) as a planet candidate with high signal-to-noise ratio. We also detect a candidate transiting super-Earth (1.4 R⊕) with an orbital period of only 12.7 hr and a candidate Neptune-sized planet (4.2 R⊕) with a period of 13.28 days, both at low signal-to-noise ratio. This system is amenable to mass determination via radial velocities and transit-timing variations, and provides an opportunity to study planets of similar size while controlling for age and environment. The ratio of orbital periods between TOI-125 b and c (Pc/Pb = 1.97) is slightly lower than an exact 2:1 commensurability and is atypical of multiple planet systems from Kepler, which show a preference for period ratios just wide of first-order period ratios. A dynamical analysis refines the allowed parameter space through stability arguments and suggests that despite the nearly commensurate periods, the system is unlikely to be in resonance.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Transit photometry - Mini Neptunes - Super Earths - Exoplanets

VizieR on-line data: <Available at CDS (J/AJ/158/177): fig9.dat>

Simbad objects: 19

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Number of rows : 19
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-125c Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 14 0
2 TOI-125.05 Pl? 01 34 22.7341114800 -66 40 32.951081784           ~ 3 0
3 TOI-125b Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 10 0
4 TOI-125d Pl 01 34 22.7341114800 -66 40 32.951081784           ~ 10 0
5 TOI-125.04 Pl? 01 34 22.7341114800 -66 40 32.951081784           ~ 3 0
6 TOI-125 PM* 01 34 22.7341114800 -66 40 32.951081784   11.72 11.02     ~ 22 0
7 HD 21749b Pl 03 26 59.2226447548 -63 29 56.762928961           ~ 38 0
8 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 326 1
9 K2-266 PM* 10 31 44.5056089208 +00 56 15.269139996           K5V 22 0
10 Kepler-271 Er* 18 52 00.7169260536 +44 17 03.188714244   14.370 13.583 13.501   F9 61 0
11 Kepler-334 Er* 19 08 33.7575590712 +47 06 54.721322640   13.393 12.839 12.748   G0 56 0
12 Kepler-1984 Ro* 19 25 08.4101553240 +40 43 48.095663484           M1V 40 0
13 KOI-4504 Ro* 19 25 10.5812198592 +41 54 46.147606272           ~ 16 0
14 Kepler-176d Pl 19 38 40.3180039344 +43 51 11.758931640           ~ 31 0
15 WASP-47 * 22 04 48.7261549272 -12 01 07.998743676     11.99 11.82   ~ 164 1
16 L 119-213 Er* 22 41 58.1171811377 -69 10 08.320741850   17.3       ~ 53 0
17 BD-15 6290b Pl 22 53 16.7325836486 -14 15 49.304052185           ~ 253 1
18 BD-15 6290c Pl 22 53 16.7325836486 -14 15 49.304052185           ~ 195 1
19 BD-15 6290 BY* 22 53 16.7325836486 -14 15 49.304052185 12.928 11.749 10.192 9.013 7.462 M3.5V 1013 1

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