2020AJ....160..138H

Query : 2020AJ....160..138H

2020AJ....160..138H - Astron. J., 160, 138-138 (2020/September-0)

Ultra-short-period planets are stable against tidal inspiral.

HAMER J.H. and SCHLAUFMAN K.C.

Abstract (from CDS):

It has been unambiguously shown both in individual systems and at the population level that hot Jupiters experience tidal inspiral before the end of their host stars' main-sequence lifetimes. Ultra-short-period (USP) planets have orbital periods P < 1 day, rocky compositions, and are expected to experience tidal decay on similar timescales to hot Jupiters if the efficiency of tidal dissipation inside their host stars parameterized as Q*^′^ is independent of P and/or secondary mass Mp. Any difference between the two classes of systems would reveal that a model with constant Q*^′^ is insufficient. If USP planets experience tidal inspiral, then USP planet systems will be relatively young compared to similar stars without USP planets. Because it is a proxy for relative age, we calculate the Galactic velocity dispersions of USP planet candidate host and non-host stars using data from Gaia Data Release 2 supplemented with ground-based radial velocities. We find that main-sequence USP planet candidate host stars have kinematics consistent with similar stars in the Kepler field without observed USP planets. This indicates that USP planet hosts have similar ages to field stars and that USP planets do not experience tidal inspiral during the main-sequence lifetimes of their host stars. The survival of USP planets requires that Q*^′^ >= 107 at P ≃ 0.7 day and Mp~2.6M⊕. This result demands that Q*^′^ depend on the orbital period and/or mass of the secondary in the range 0.5day≲P≲5 days and 1M⊕≲Mp≲1000M⊕.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanet dynamics - Exoplanet evolution - Exoplanet tides - Stellar ages - Tidal interaction - Exoplanets

VizieR on-line data: <Available at CDS (J/AJ/160/138): table1.dat>

Simbad objects: 72

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Number of rows : 72
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 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
2 WASP-12 * 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 358 1
3 CoRoT-7 * 06 43 49.4690164104 -01 03 46.826642700   12.78 11.73 11.36 10.87 K0V 232 1
4 CoRoT-7b Pl 06 43 49.4690164104 -01 03 46.826642700           ~ 422 1
5 KOI-3980 Ro* 18 44 58.3434090000 +42 15 17.751615696           ~ 23 0
6 KOI-4070 EB* 18 45 45.7674676056 +47 14 47.309787600           ~ 24 0
7 KOI-1169 Ro* 18 46 12.2883221424 +47 28 11.809241868           G4V 48 0
8 Kepler-653 Ro* 18 48 51.1087091640 +46 43 04.156997268           K0IV-V 65 0
9 KOI-2306 Ro* 18 49 08.2470369576 +42 09 15.077313216           M0V 31 0
10 KOI-4366 Ro* 18 51 39.3687612912 +47 58 12.936332532           ~ 28 0
11 Kepler-1566 Ro* 18 54 21.0265251960 +40 34 29.781183036           ~ 33 0
12 Kepler-1547 Ro* 18 55 03.3743589144 +42 13 19.692588036           G1 35 0
13 Kepler-1310 Ro* 18 55 40.8089139552 +40 44 24.352535040           ~ 43 0
14 Kepler-1338 Ro* 18 56 10.1547565368 +41 41 56.835005820           M6 39 0
15 Kepler-922 Ro* 18 58 55.5556720056 +49 31 59.451658644           F9 41 0
16 Kepler-1415 Ro* 19 00 37.6439812896 +47 52 23.965596480           ~ 27 0
17 Kepler-1814 Ro* 19 00 52.0051328232 +41 16 56.829250632           ~ 47 0
18 Kepler-1932 Ro* 19 01 19.5699678192 +41 03 50.042909160           ~ 41 0
19 Kepler-1067 Ro* 19 01 32.9789013048 +45 02 56.586043176           ~ 58 0
20 Kepler-1258 Ro* 19 01 37.1912497470 +49 59 40.998111364           G2 40 0
21 Kepler-1604 Ro* 19 01 38.5531935240 +44 24 44.041689648           ~ 34 0
22 Kepler-10 Em* 19 02 43.0613892904 +50 14 28.701617339       11.00   G2V 238 1
23 Kepler-407 Er* 19 04 08.7180702936 +49 36 52.219314504   13.601 12.664 12.508   G7 90 0
24 KOI-2763 Ro* 19 04 11.9807577552 +38 57 36.673174944           ~ 34 0
25 Kepler-290 Ro* 19 05 38.4000976080 +42 40 53.532912216           ~ 54 0
26 Kepler-828 Er* 19 07 32.9430889536 +42 28 16.469886216   16.112 15.346 15.065   ~ 48 0
27 KOI-2916 Ro* 19 10 56.5712444064 +42 49 24.290396040           ~ 26 0
28 Kepler-1139 Ro* 19 11 46.9470108024 +39 13 50.001240576           K2 51 0
29 KOI-4430 Ro* 19 14 23.2368597696 +46 19 33.705263892           ~ 24 0
30 Kepler-1446 Ro* 19 17 41.7499081320 +46 43 34.198938804           ~ 52 0
31 KOI-4469 Ro* 19 19 01.5574376112 +46 57 10.460180160           ~ 17 0
32 KOI-2874 EB* 19 19 26.1334711080 +45 30 13.766974956           ~ 34 0
33 Kepler-1264 Ro* 19 19 32.2570543800 +45 12 41.463309744           F9 44 0
34 Kepler-1409 Ro* 19 20 20.3423408040 +51 12 30.988478520           K0 41 0
35 2MASS J19202414+4852350 * 19 20 24.1481513904 +48 52 34.989543372           ~ 15 0
36 KOI-4144 * 19 21 20.9233573944 +38 12 17.927782236           F9V 28 0
37 UCAC4 659-072124 Er* 19 21 32.8072879296 +41 44 43.011454920   16.710 16.464 15.939   ~ 12 0
38 KOI-2607 Ro* 19 22 44.3271183936 +40 15 19.622074680           ~ 36 0
39 Kepler-845 Er* 19 23 49.8164159496 +49 12 13.688837964   15.995 14.939 14.716   K3 50 0
40 KOI-1666 Ro* 19 24 04.7347467504 +40 10 39.262665000           ~ 21 0
41 Kepler-1107 Ro* 19 24 11.9792222136 +39 08 29.941035324           ~ 49 0
42 Kepler-607 Ro* 19 24 13.7214465480 +44 37 56.571524436           K1 47 0
43 KOI-5900 V* 19 24 34.8743342520 +49 21 55.143051696           ~ 18 0
44 Kepler-775 Ro* 19 25 43.9934338032 +41 42 12.333307248           G7 60 0
45 KOI-1239 Ro* 19 28 42.8665703856 +42 00 21.259734192           ~ 48 0
46 Kepler-1559 Ro* 19 29 08.7849169579 +42 04 20.782180030           ~ 43 0
47 2MASS J19305184+3756378 * 19 30 51.8503660800 +37 56 37.784190480           ~ 14 0
48 Kepler-1323 Ro* 19 31 29.3445892464 +46 05 55.914395172   12.71 13.00     F8V 54 0
49 KOI-2796 Ro* 19 31 29.7977085360 +48 56 11.707284084           ~ 30 0
50 KOI-2093 Ro* 19 31 49.0046609688 +41 56 05.295945264           ~ 42 0
51 Kepler-1173 Ro* 19 32 31.4632745376 +45 39 48.737373408           K0 49 0
52 KOI-4018 EB* 19 33 24.2386982232 +40 03 34.923967596           ~ 23 0
53 Kepler-1379 Ro* 19 34 40.9080147024 +41 24 36.916345116           ~ 31 0
54 Kepler-78 EB* 19 34 58.0137407208 +44 26 53.960186940   12.87 11.72     K2.5V 98 1
55 KOI-2396 Ro* 19 35 53.4707430672 +50 38 42.559675152           ~ 30 0
56 KOI-3913 Ro* 19 38 27.0045949056 +47 20 35.715958944           ~ 35 0
57 Kepler-1834 Ro* 19 38 39.5301570288 +39 47 01.773474324           ~ 46 0
58 Kepler-1087 Ro* 19 39 54.9207031752 +46 00 20.349669312           K1 56 0
59 Kepler-487 Ro* 19 41 08.9282369832 +41 13 19.055345232   15.89 14.84 15.60 14.39 ~ 87 1
60 Kepler-1315 Er* 19 43 17.1500151288 +46 03 11.020819896       15.034   ~ 58 0
61 Kepler-1523 Ro* 19 44 12.9769973304 +45 49 37.420965480           ~ 47 0
62 Kepler-80 Er* 19 44 27.0200680656 +39 58 43.594100688   16.303 15.201 14.866   M0V 177 1
63 Kepler-1340 Ro* 19 44 55.8707744424 +42 28 22.061557812           ~ 41 0
64 Kepler-1228 PM* 19 46 12.7329343930 +46 57 58.599601773           G8 37 0
65 KOI-2875 Ro* 19 47 51.3121477800 +50 44 43.434471912           ~ 33 0
66 KOI-4109 Ro* 19 48 19.9328526144 +43 40 47.866716588           ~ 28 0
67 Kepler-990 Ro* 19 51 45.1756915728 +46 52 53.022060660           G4 48 0
68 KOI-2925 Ro* 19 53 11.5580476512 +42 26 03.673276116           ~ 35 0
69 Kepler-929 Ro* 19 53 55.4690164680 +41 36 55.215441540           ~ 43 0
70 KOI-3065 Ro* 19 54 09.5175569664 +40 11 01.153972212           ~ 34 0
71 KOI-2480 Ro* 19 55 42.3340984896 +44 00 07.895760696           ~ 27 0
72 KOI-4841 * 19 58 11.2161059328 +40 40 54.809405976           ~ 14 0

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