2019MNRAS.488..536H


Query : 2019MNRAS.488..536H

2019MNRAS.488..536H - Mon. Not. R. Astron. Soc., 488, 536-546 (2019/September-1)

Two temperate sub-Neptunes transiting the star EPIC 212737443.

HERATH M., HINSE T.C., LIVINGSTON J.H., HERNANDEZ J., EVANS D.F., WELLS R., GUNESEKERA S., TREGLOAN-REED J., RABUS M., SKOTTFELT J., DOMINIK M., JORGENSEN U.G., JAYARATNE C. and LY C.T.K.

Abstract (from CDS):

We report the validation of a new planetary system around the K3 star EPIC 212737443 using a combination of K2 photometry, follow-up high-resolution imaging and spectroscopy. The system consists of two sub-Neptune sized transiting planets with radii of 2.6R and 2.7R, with orbital periods of 13.6 and 65.5 d, equilibrium temperatures of 536 and 316 K, respectively. In the context of validated K2 systems, the outer planet has the longest precisely measured orbital period, as well as the lowest equilibrium temperature for a planet orbiting a star of spectral type earlier than M. The two planets in this system have a mutual Hill radius of ΔRH = 36, larger than most other known transiting multiplanet systems, suggesting the existence of another (possibly non-transiting) planet, or that the system is not maximally packed.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - techniques: spectroscopic - eclipses - planets and satellites: detection

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 - 2023
#notes
1 BD+10 1799 * 08 26 27.8490900672 +10 04 49.334175156   9.42 8.92     F8 36 0
2 K2-263b Pl 08 38 43.7695270976 +15 40 50.249192161           ~ 13 0
3 K2-119 LM* 08 48 02.3358945336 +16 54 06.705457380           K5V 12 0
4 K2-118b Pl 08 48 30.4546988978 +15 39 21.530303993           ~ 8 0
5 K2-311 * 10 37 33.4203530736 +11 50 33.872253972   13.33 12.42 12.17   ~ 4 0
6 K2-310 PM* 13 36 53.2096541736 -07 19 05.350809756   15.963 14.836 14.58 13.626 K3V 8 0
7 K2-310b Pl 13 36 53.2097338289 -07 19 05.351321228           ~ 2 0
8 K2-310c Pl 13 36 53.2097338289 -07 19 05.351321228           ~ 4 0
9 UCAC4 414-056346 * 13 36 53.9049747240 -07 19 19.342764876   15.04 13.87 13.67   ~ 1 0

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2023.02.07-18:50:57

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