2009ApJ...700..832C


Query : 2009ApJ...700..832C

2009ApJ...700..832C - Astrophys. J., 700, 832-843 (2009/July-3)

The role of planet accretion in creating the next generation of red giant rapid rotators.

CARLBERG J.K., MAJEWSKI S.R. and ARRAS P.

Abstract (from CDS):

Rapid rotation in field red giant stars is a relatively rare but well-studied phenomenon; here we investigate the potential role of planet accretion in spinning up these stars. Using Zahn's theory of tidal friction and stellar evolution models, we compute the decay of a planet's orbit into its evolving host star and the resulting transfer of angular momentum into the stellar convective envelope. This experiment assesses the frequency of planet ingestion and rapid rotation on the red giant branch (RGB) for a sample of 99 known exoplanet host stars. We find that the known exoplanets are indeed capable of creating rapid rotators; however, the expected fraction due to planet ingestion is only ∼ 10% of the total seen in surveys of present-day red giants. Of the planets ingested, we find that those with smaller initial semimajor axes are more likely to create rapid rotators because these planets are accreted when the stellar moment of inertia is smallest. We also find that many planets may be ingested prior to the RGB phase, contrary to the expectation that accretion would generally occur when the stellar radii expand significantly as giants. Finally, our models suggest that the rapid rotation signal from ingested planets is most likely to be seen on the lower RGB, which is also where alternative mechanisms for spin-up, e.g., angular momentum dredged up from the stellar core, do not operate. Thus, rapid rotators on the lower RGB are the best candidates to search for definitive evidence of systems that have experienced planet accretion.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: evolution - stars: rotation

CDS comments: HD 168442 b is a misprint for HD 168443 b.

Simbad objects: 74

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Number of rows : 74
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 WASP-1 V* 00 20 40.0745768856 +31 59 23.954809596   12.06 11.31     F7V 108 1
2 WASP-1b Pl 00 20 40.0746033057 +31 59 23.953709844           ~ 124 1
3 BD+57 793b Pl 04 21 52.7044170433 +57 49 01.892074012           ~ 194 1
4 BD+57 793 * 04 21 52.7048156328 +57 49 01.889294952   10.27 9.85     F5V 139 2
5 HD 33564b Pl 05 22 33.5290089287 +79 13 52.142657543           ~ 22 1
6 HD 33564 PM* 05 22 33.5306004096 +79 13 52.142643912       4.8   F7V 161 1
7 CoRoT-1 * 06 48 19.1723766840 -03 06 07.710745140     13.6 13.44 12.88 G0V 114 2
8 CoRoT-1b Pl 06 48 19.1724141241 -03 06 07.710423478           ~ 162 1
9 HAT-P-9b Pl 07 20 40.4562402899 +37 08 26.342807726           ~ 55 1
10 HAT-P-9 * 07 20 40.4564614032 +37 08 26.342829060   12.35 12.34 12.08   F 47 1
11 XO-4b Pl 07 21 33.1602110129 +58 16 05.111704885           ~ 57 1
12 XO-4 * 07 21 33.1602434760 +58 16 05.109533364   11.15 10.81     ~ 54 1
13 XO-5b Pl 07 46 51.9615004947 +39 05 40.460564688           ~ 46 1
14 BD+50 1471 PM* 07 48 06.4723053776 +50 13 32.920598923   12.002 11.138 10.669 10.243 G9V 153 1
15 BD+50 1471b Pl 07 48 06.4723053776 +50 13 32.920598923           ~ 143 1
16 HD 68988b Pl 08 18 22.1727278398 +61 27 38.597348068           ~ 44 1
17 HD 68988 PM* 08 18 22.1728652088 +61 27 38.595044628   8.84 8.19     G1V 144 2
18 HD 73256b Pl 08 36 23.0163309904 -30 02 15.441850007           ~ 42 1
19 V* CS Pyx BY* 08 36 23.0165447400 -30 02 15.446225796   8.84 8.06     G8IV-VFe+0.5 148 1
20 HD 86081 PM* 09 56 05.9184616896 -03 48 30.325874184   9.34 8.70     G1V 72 1
21 HD 86081b Pl 09 56 05.9185287123 -03 48 30.323313278           ~ 29 1
22 OGLE-TR 132 V* 10 50 34.5943868112 -61 57 26.138690064         15.72 F 95 1
23 NAME OGLE-TR-132b Pl 10 50 34.5945727713 -61 57 26.140283621           ~ 102 1
24 NAME OGLE-TR 182b Pl 11 09 18.7248184151 -61 05 42.963716098           ~ 35 1
25 OGLE-TR 182 * 11 09 18.7248783144 -61 05 42.962710884     16.84 16.37   ~ 34 1
26 * 70 Vir b Pl 13 28 25.8081883620 +13 46 43.642951116           ~ 106 1
27 * 70 Vir PM* 13 28 25.8085908881 +13 46 43.638308807 5.930 5.680 4.970 4.37 3.98 G4Va 695 1
28 * tau Boo Ro* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 942 1
29 * tau Boo b Pl 13 47 15.74340 +17 27 24.8552           ~ 259 1
30 BD+22 2716 * 14 33 06.3571702344 +21 53 40.981395876   10.194 9.745     F5V 88 1
31 BD+22 2716b Pl 14 33 06.3573673505 +21 53 40.982782397           ~ 144 1
32 HD 136118 PM* 15 18 55.4722661904 -01 35 32.592572196   7.46 6.94     F7V 119 1
33 HD 136118b Pl? 15 18 55.4730161019 -01 35 32.597619958           ~ 33 1
34 HD 141937 PM* 15 52 17.5473965880 -18 26 09.843199116   7.87 7.25     G1V 162 1
35 HD 141937b Pl 15 52 17.5481365464 -18 26 09.793876507           ~ 34 1
36 BD+28 2507 V* 16 02 11.8462322592 +28 10 10.420201452   11.88 11.25     G1V 96 1
37 BD+28 2507b Pl 16 02 11.8463105423 +28 10 10.419642379           ~ 169 1
38 HD 147506 * 16 20 36.3576063720 +41 02 53.106772488   9.15 8.69     F8V 151 2
39 HD 147506b Pl 16 20 36.3579144486 +41 02 53.109043943           ~ 229 1
40 NAME OGLE-TR-10b Pl 17 51 28.2589927588 -29 52 35.232998832           ~ 84 1
41 OGLE-TR 10 EB* 17 51 28.2593510544 -29 52 35.231024064     15.780 16.193 14.92 G2V 86 1
42 1SWASP J175207.01+373246.3 V* 17 52 07.0184259768 +37 32 46.237377840   13.114 12.402 12.06 11.603 G 65 1
43 TrES-3 Pl 17 52 07.0185036683 +37 32 46.237002085           ~ 211 2
44 NAME OGLE-TR-56b Pl 17 56 35.5015759807 -29 32 21.476706712           ~ 196 1
45 OGLE-TR 56 EB* 17 56 35.5016678064 -29 32 21.479240220     16.560 16.07 15.30 ~ 164 1
46 SWEEPS J175853.92-291120.6 * 17 58 53.92 -29 11 20.6     18.80   17.70 ~ 3 1
47 SWEEPS 4 Pl 17 58 53.92 -29 11 20.6     18.80   17.70 ~ 27 1
48 HAT-P-5 * 18 17 37.3126923960 +36 37 17.170401468   12.92 11.95     G1V 58 1
49 HAT-P-5b Pl 18 17 37.3127577964 +36 37 17.168584830           ~ 57 1
50 HD 168443b Pl 18 20 03.9331764016 -09 35 44.609316076           ~ 91 1
51 HD 168443c Pl 18 20 03.9331764016 -09 35 44.609316076           ~ 87 1
52 HD 168443 PM* 18 20 03.9332862096 -09 35 44.614653900   7.62 6.92     G6V 294 1
53 BD+35 3293 V* 18 34 31.6252443960 +35 39 41.491899468   11.07 10.63 10.52   F7V 117 1
54 BD+35 3293b Pl 18 34 31.6255913635 +35 39 41.489193276           ~ 106 1
55 Kepler-1 Er* 19 07 14.0375836512 +49 18 59.091482160   11.85 11.25     G0V 160 2
56 Kepler-1b Pl 19 07 14.0379171930 +49 18 59.090895318           ~ 302 2
57 HD 178911Bb Pl 19 09 03.0984180671 +34 35 59.473294546           ~ 31 1
58 HD 178911B PM* 19 09 03.0984258744 +34 35 59.474397804   8.71   7.3   G5 127 1
59 HD 179949 BY* 19 15 33.2300695008 -24 10 45.671448072   6.772 6.237     F8V 377 1
60 HD 179949b Pl 19 15 33.2300861317 -24 10 45.673372382           ~ 113 1
61 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 229 2
62 CoRoT-2b Pl 19 27 06.4944821296 +01 23 01.357597206           ~ 210 1
63 CoRoT-3 EB* 19 28 13.2642131544 +00 07 18.613986132   14.199 13.292 13.099 12.54 F3V 70 1
64 CoRoT-3b Pl 19 28 13.2642482783 +00 07 18.614302248           ~ 126 1
65 HD 202206b Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 54 1
66 HD 202206c Pl 21 14 57.7684954746 -20 47 21.162361638           ~ 39 1
67 HD 202206 PM* 21 14 57.7686051936 -20 47 21.161521320   8.79 8.07     G6V 210 1
68 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1046 1
69 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1673 1
70 BD+41 4831b Pl 23 39 05.8101319829 +42 27 57.503480354           ~ 76 1
71 BD+41 4831 * 23 39 05.8102996968 +42 27 57.505293900   10.88 10.47     F8V 74 1
72 WASP-5 V* 23 57 23.7564672192 -41 16 37.743700800   12.808 12.146 12.058 11.44 G4V 104 1
73 WASP-5b Pl 23 57 23.7565609528 -41 16 37.745589460           ~ 83 1
74 NAME Galactic Bulge reg ~ ~           ~ 3870 0

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2022.07.06-08:20:58

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