2018MNRAS.479.4786V

Query : 2018MNRAS.479.4786V

2018MNRAS.479.4786V - Mon. Not. R. Astron. Soc., 479, 4786-4795 (2018/October-0)

An asteroseismic view of the radius valley: stripped cores, not born rocky.

VAN EYLEN V., AGENTOFT C., LUNDKVIST M.S., KJELDSEN H., OWEN J.E., FULTON B.J., PETIGURA E. and SNELLEN I.

Abstract (from CDS):

Various theoretical models treating the effect of stellar irradiation on planetary envelopes predict the presence of a radius valley, i.e. a bimodal distribution of planet radii, with super-Earths and sub-Neptune planets separated by a valley at around ~2 R⊕. Such a valley has been observed recently, owing to an improvement in the precision of stellar and therefore planetary radii. Here, we investigate the presence, location, and shape of such a valley using a small sample with highly accurate stellar parameters determined from asteroseismology, which includes 117 planets with a median uncertainty on the radius of 3.3 per cent. We detect a clear bimodal distribution, with super-Earths (~1.5 R⊕) and sub-Neptunes (≃2.5 R⊕) separated by a deficiency around 2 R⊕. We furthermore characterize the slope of the valley as a power law R∝Pγ with γ= -0.09+0.02–0.04. A negative slope is consistent with models of photoevaporation, but not with the late formation of rocky planets in a gas-poor environment, which would lead to a slope of opposite sign. The exact location of the gap further points to planet cores consisting of a significant fraction of rocky material.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planets and satellites: composition - planets and satellites: formation - planets and satellites: fundamental parameters - planets and satellites: physical evolution

Simbad objects: 117

goto Full paper

goto View the references in ADS

Number of rows : 117
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 Kepler-338e Pl 18 51 54.9519387600 +40 47 03.675669144           ~ 32 0
2 Kepler-338c Pl 18 51 54.9519387600 +40 47 03.675669144           ~ 30 0
3 Kepler-338b Pl 18 51 54.9519387600 +40 47 03.675669144           ~ 32 0
4 Kepler-338d Pl 18 51 54.9519387600 +40 47 03.675669144           ~ 29 0
5 HD 175289 PM* 18 52 36.1604006928 +45 08 23.345639700   9.95 9.50 9.44   F6IV 126 0
6 Kepler-1709b Pl 18 53 29.9567107464 +43 47 17.672249832           ~ 27 0
7 Kepler-1394b Pl 18 53 48.7635458640 +45 05 02.870367216           ~ 20 0
8 BD+44 3020b Pl 18 56 14.3076037320 +44 31 05.389610412           ~ 72 1
9 BD+44 3020c Pl 18 56 14.3076037320 +44 31 05.389610412           ~ 51 1
10 BD+44 3020d Pl 18 56 14.3076037320 +44 31 05.389610412           ~ 62 1
11 KOI-1962.01 Pl? 18 56 56.1556389974 +40 47 40.321484343           ~ 14 0
12 Kepler-1298b Pl 18 57 41.4591471432 +49 06 22.389043968           ~ 19 0
13 Kepler-1656b Pl 18 57 53.3246033136 +39 54 42.531984144           ~ 52 0
14 Kepler-95 Er* 18 57 55.7883819888 +44 23 52.818842400   13.313 12.481 12.268   G5V 102 0
15 Kepler-1274b Pl 18 58 22.4884396824 +46 26 59.170695648           ~ 20 0
16 Kepler-506b Pl 18 58 32.4434559048 +40 43 11.424080496           ~ 28 0
17 HD 176693 Er* 18 59 08.6844743448 +48 25 23.600359776   9.34 8.83 8.996   F8V 148 0
18 BD+46 2597b Pl? 19 00 18.6405916128 +46 25 10.605542124           ~ 17 0
19 Kepler-127d Pl 19 00 45.5887144320 +46 01 40.693626120           ~ 44 0
20 Kepler-127c Pl 19 00 45.5887144320 +46 01 40.693626120           ~ 39 0
21 Kepler-127b Pl 19 00 45.5887144320 +46 01 40.693626120           ~ 32 0
22 Kepler-815b Pl 19 00 53.0659368264 +47 52 52.820511060           ~ 23 0
23 Kepler-129c Pl 19 01 14.7043468776 +47 50 54.901789800           ~ 36 0
24 Kepler-129b Pl 19 01 14.7043468776 +47 50 54.901789800           ~ 35 0
25 Kepler-907b Pl 19 01 54.3849990816 +41 37 57.917209008           ~ 19 0
26 Kepler-4 Er* 19 02 27.6979514832 +50 08 08.703945600   13.114 12.293 12.195   G0 119 1
27 Kepler-10b Pl 19 02 43.0613892904 +50 14 28.701617339           ~ 322 1
28 Kepler-10c Pl 19 02 43.0613892904 +50 14 28.701617339           ~ 135 1
29 KOI-268.01 Pl? 19 02 54.9120176040 +38 30 25.083958896           ~ 32 0
30 Kepler-407 Er* 19 04 08.7180702936 +49 36 52.219314504   13.601 12.664 12.508   G7 90 0
31 Kepler-25c Pl 19 06 33.2141354736 +39 29 16.358725104           ~ 103 1
32 Kepler-25b Pl 19 06 33.2141354736 +39 29 16.358725104           ~ 75 1
33 Kepler-1655b Pl 19 06 45.4641571944 +39 12 42.966734328           ~ 35 0
34 Kepler-1b Pl 19 07 14.0375836512 +49 18 59.091482160           ~ 349 2
35 KOI-3168.01 Pl? 19 09 15.5673202632 +39 32 17.487606444           ~ 18 0
36 Kepler-1713b Pl 19 09 22.9787972016 +43 22 42.207634092           ~ 24 0
37 HD 179070 Er* 19 09 26.8349590368 +38 42 50.455534860   8.767 8.25 8.00   F6IV 200 1
38 Kepler-467b Pl 19 09 27.0804703296 +38 38 58.492059000           ~ 24 0
39 Kepler-454 PM* 19 09 54.8465617704 +38 13 43.922389152   12.38 11.57 11.467   ~ 87 0
40 Kepler-510b Pl 19 10 37.1971512528 +39 14 39.414057504           ~ 28 0
41 Kepler-14 ** 19 10 50.110176 +47 19 58.87632   12.360 12.093 12.078 11.65 F8IV 101 1
42 Kepler-130b Pl 19 13 48.1593590088 +40 14 43.162049328           ~ 36 0
43 Kepler-130c Pl 19 13 48.1593590088 +40 14 43.162049328           ~ 41 0
44 Kepler-130d Pl 19 13 48.1593590088 +40 14 43.162049328           ~ 28 0
45 Kepler-7 Er* 19 14 19.5623105760 +41 05 23.367379128           G0 125 1
46 BD+40 3638c Pl 19 14 45.2915908224 +41 09 04.210237980           ~ 46 1
47 BD+40 3638d Pl 19 14 45.2915908224 +41 09 04.210237980           ~ 43 1
48 BD+40 3638b Pl 19 14 45.2915908224 +41 09 04.210237980           ~ 44 1
49 Kepler-1392b Pl 19 15 04.0717176144 +46 23 39.984204012           ~ 8 0
50 Kepler-103c Pl 19 15 56.2939334304 +40 03 52.285818168           ~ 43 0
51 Kepler-103b Pl 19 15 56.2939334304 +40 03 52.285818168           ~ 53 0
52 Kepler-92d Pl 19 16 20.6546892216 +41 33 46.654315236           ~ 22 0
53 Kepler-92c Pl 19 16 20.6546892216 +41 33 46.654315236           ~ 30 0
54 Kepler-92b Pl 19 16 20.6546892216 +41 33 46.654315236           ~ 37 0
55 Kepler-22 PM* 19 16 52.1902276920 +47 53 03.948648180   12.597 11.813 11.642   G5 109 1
56 Kepler-997b Pl 19 16 56.0158676328 +49 56 20.226151140           ~ 20 0
57 Kepler-126c Pl 19 17 23.3505657144 +44 12 30.709225008           ~ 28 0
58 Kepler-126d Pl 19 17 23.3505657144 +44 12 30.709225008           ~ 41 0
59 Kepler-126b Pl 19 17 23.3505657144 +44 12 30.709225008           ~ 38 0
60 Kepler-509b Pl 19 18 39.4600939944 +48 42 22.287851136           ~ 30 0
61 KOI-5.02 Pl? 19 18 57.5306473320 +44 38 50.618934060           ~ 12 0
62 KOI-5.01 Pl? 19 18 57.5306473320 +44 38 50.618934060           ~ 24 0
63 BD+41 3306f Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 39 0
64 BD+41 3306d Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 41 0
65 BD+41 3306b Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 46 0
66 BD+41 3306c Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 42 0
67 BD+41 3306e Pl 19 19 00.5489000285 +41 38 04.582441681           ~ 46 0
68 Kepler-278c Pl 19 20 25.7273170008 +38 42 08.031761532           ~ 31 0
69 Kepler-278b Pl 19 20 25.7273170008 +38 42 08.031761532           ~ 34 0
70 KOI-319.01 Pl? 19 20 28.2085336008 +44 52 22.548870588           ~ 25 0
71 Kepler-643b Pl 19 21 18.5544145224 +42 53 53.758935996           ~ 32 0
72 Kepler-109b Pl 19 21 34.2534438336 +40 17 05.498443284           ~ 44 0
73 Kepler-109c Pl 19 21 34.2534438336 +40 17 05.498443284           ~ 42 0
74 Kepler-540b Pl 19 22 30.0570200304 +44 52 26.212595772           ~ 30 0
75 KOI-1964.01 Pl? 19 22 48.8885807784 +43 36 25.936829172           ~ 19 0
76 BD+48 2893b Pl 19 24 07.7659706688 +49 02 24.928348272           ~ 102 1
77 BD+48 2893c Pl 19 24 07.7659706688 +49 02 24.928348272           ~ 61 1
78 Kepler-100d Pl 19 25 32.6432787456 +41 59 24.945100548           ~ 50 0
79 Kepler-100b Pl 19 25 32.6432787456 +41 59 24.945100548           ~ 66 0
80 Kepler-100c Pl 19 25 32.6432787456 +41 59 24.945100548           ~ 56 0
81 Kepler-145b Pl 19 25 33.0613997040 +44 31 44.752299852           ~ 36 0
82 Kepler-145c Pl 19 25 33.0613997040 +44 31 44.752299852           ~ 37 0
83 BD+38 3583 Er* 19 25 40.3885404552 +38 40 20.413186860   10.73 10.00 9.853   G5V 148 0
84 BD+42 3339b Pl? 19 25 59.3297612712 +42 43 42.485027700           ~ 30 0
85 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 343 1
86 Kepler-1002b Pl 19 32 19.0718118216 +43 04 25.469349132           ~ 20 0
87 Kepler-805b Pl 19 32 55.1876989488 +45 03 11.979046584           ~ 30 0
88 Kepler-432 RG* 19 33 07.7290058280 +48 17 09.147604308   13.485 12.464 12.203   G5 98 0
89 BD+46 2726 Er* 19 34 43.0022454096 +46 51 09.938179044   10.36 9.64 9.438   K0V 156 0
90 Kepler-1714b Pl 19 34 51.9513700320 +46 13 35.876312328           ~ 23 0
91 Kepler-449c Pl 19 34 55.8692493000 +41 54 02.276268048           ~ 21 0
92 Kepler-449b Pl 19 34 55.8692493000 +41 54 02.276268048           ~ 24 0
93 Kepler-23c Pl 19 36 52.5355328952 +49 28 45.252600204           ~ 45 1
94 Kepler-23b Pl 19 36 52.5355328952 +49 28 45.252600204           ~ 48 1
95 Kepler-23d Pl 19 36 52.5355328952 +49 28 45.252600204           ~ 38 0
96 Kepler-108c Pl 19 38 14.20056 +46 03 44.3700           ~ 23 0
97 Kepler-108b Pl 19 38 14.20056 +46 03 44.3700           ~ 32 0
98 Kepler-464b Pl 19 39 20.4361754256 +48 58 56.492869800           ~ 29 0
99 Kepler-197c Pl 19 40 54.3398888544 +50 33 32.423445180           ~ 34 0
100 Kepler-197e Pl 19 40 54.3398888544 +50 33 32.423445180           ~ 26 0
101 Kepler-197d Pl 19 40 54.3398888544 +50 33 32.423445180           ~ 33 0
102 Kepler-197b Pl 19 40 54.3398888544 +50 33 32.423445180           ~ 32 0
103 Kepler-450d Pl 19 41 56.7727769064 +51 00 48.582305136           ~ 25 0
104 Kepler-450b Pl 19 41 56.7727769064 +51 00 48.582305136           ~ 39 0
105 Kepler-450c Pl 19 41 56.7727769064 +51 00 48.582305136           ~ 31 0
106 BD+45 2960b Pl? 19 43 12.6574592352 +45 59 17.085937164           ~ 30 0
107 Kepler-910b Pl 19 44 11.3667063480 +42 44 34.765024740           ~ 23 0
108 Kepler-107e Pl 19 48 06.7734610824 +48 12 30.964175676           ~ 42 0
109 Kepler-107c Pl 19 48 06.7734610824 +48 12 30.964175676           ~ 75 0
110 Kepler-107d Pl 19 48 06.7734610824 +48 12 30.964175676           ~ 33 0
111 Kepler-107b Pl 19 48 06.7734610824 +48 12 30.964175676           ~ 44 0
112 Kepler-96 EB* 19 48 16.7135669520 +40 31 30.523868868   11.130 10.436 10.233   G2V 101 0
113 Kepler-1219b Pl 19 48 51.7936173072 +47 22 42.663605700           ~ 20 0
114 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 359 1
115 Kepler-911b Pl 19 54 21.4047577560 +40 45 02.514668688           ~ 24 0
116 Kepler-1838b Pl 19 55 58.0108236768 +40 08 32.701222824           ~ 20 0
117 Kepler-1876b Pl 19 56 38.5144499880 +41 08 37.428588312           ~ 22 0

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.479.4786V and select 'bookmark this link' or equivalent in the popup menu