2011A&A...529A..50L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST07:52:10

2011A&A...529A..50L - Astronomy and Astrophysics, volume 529A, 50-50 (2011/5-1)

Constraining tidal dissipation in F-type main-sequence stars: the case of CoRoT-11.

LANZA A.F., DAMIANI C. and GANDOLFI D.

Abstract (from CDS):

Tidal dissipation in late-type stars is presently poorly understood and the study of planetary systems hosting hot Jupiters can provide new observational constraints to test proposed theories. We focus on systems with F-type main-sequence stars and find that the recently discovered system CoRoT-11 is presently the best suited for this kind of investigation.A classic constant tidal lag model is applied to reproduce the evolution of the system from a plausible nearly synchronous state on the zero-age main sequence (ZAMS) to the present state, thus putting constraints on the average modified tidal quality factor <Qs'> of its F6V star. Initial conditions with the stellar rotation period longer than the orbital period of the planet can be excluded on the basis of the presently observed state in which the star spins faster than the planet orbit. It is found that 4x106≲<Qs'>≲2x107, if the system started its evolution on the ZAMS close to synchronization, with an uncertainty related to the constant tidal lag hypothesis and the estimated stellar magnetic braking within a factor of ≃5-6. For a non-synchronous initial state of the system, <Qs'>≲4x106 implies an age younger than ∼1Gyr, while <Qs'≫∼2x107 may be tested by comparing the theoretically derived initial orbital and stellar rotation periods with those of a sample of observed systems. Moreover, we discuss how the present value of Qs' can be measured by a timing of the mid-epoch and duration of the transits as well as of the planetary eclipses to be observed in the infrared with an accuracy of ∼0.5-1s over a time baseline of ∼25yr. CoRoT-11 is a highly interesting system that potentially allows us a direct measure of the tidal dissipation in an F-type star as well as the detection of the precession of the orbital plane of the planet that provides us with an accurate upper limit for the obliquity of the stellar equator. If the planetary orbit has a significant eccentricity (e≳0.05), it will be possible to also detect the precession of the line of the apsides and derive information on the Love number of the planet and its tidal quality factor.

Abstract Copyright:

Journal keyword(s): planetary systems - planet-star interactions - binaries: close - stars: late-type - stars: rotation

Simbad objects: 25

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Number of rows : 25

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 10069 * 01 37 25.0335097438 -45 40 40.376513381   9.74 9.30     F6IV/V 153 1
2 HD 15082 dS* 02 26 51.0582746497 +37 33 01.737746137   8.41 8.14     kA5hA8mF4 135 1
3 BD+57 793 * 04 21 52.7044170433 +57 49 01.892074012   10.27 9.85     F5V 130 2
4 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2654 0
5 WASP-12 ** 06 30 32.7966788910 +29 40 20.266334158   12.14 11.57     G0V 229 2
6 HAT-P-24 * 07 15 18.0194123517 +14 15 45.409653547   12.21 11.76 11.71   F8 32 1
7 HAT-P-9 * 07 20 40.4562402899 +37 08 26.342807726   12.35 12.34 12.08   F 44 1
8 XO-4 * 07 21 33.1602110129 +58 16 05.111704885   11.15 10.81     ~ 51 1
9 OGLE2-TR L9 * 11 07 55.1807238868 -61 08 46.537193777       14.60   F3 32 1
10 CD-31 10766 * 13 55 42.7119654298 -32 09 34.615276547   11.396 10.910     F7 51 1
11 BD+22 2716 * 14 33 06.3573673505 +21 53 40.982782397   10.194 9.745     F5V 80 1
12 CD-27 10695 * 15 59 50.9489706053 -28 03 42.309432433   11.83 11.59 11.31 10.92 F4 92 1
13 HD 147506 * 16 20 36.3579144486 +41 02 53.109043943   9.15 8.69     F8V 139 2
14 BD+38 2917 * 17 20 27.8782981532 +38 14 31.909663582   10.41 9.99     F5V 47 1
15 V* V5127 Sgr Al* 17 51 50.8845340566 -29 54 43.691222337     14.862   14.01 A3V 9 0
16 BD+35 3293 V* 18 34 31.6255913635 +35 39 41.489193276   11.07 10.63 10.52   F7V 108 1
17 CoRoT-11 EB* 18 42 44.9499508376 +05 56 15.652163640   13.73 12.939     F6V 42 1
18 Kepler-8 Ro* 18 45 09.1489711922 +42 27 03.891516422           F6V 89 1
19 CoRoT-2 * 19 27 06.4944821296 +01 23 01.357597206   13.422 12.568 12.204 11.49 G7V+K9V 211 2
20 BD+47 2846 Er* 19 28 59.3538131541 +47 58 10.216250846   10.97 10.48     F6V 254 2
21 Kepler-5 Ro* 19 57 37.6884816070 +44 02 06.189528905           F5V 87 1
22 HD 189733 BY* 20 00 43.7130382888 +22 42 39.071811263 9.241 8.578 7.648 7.126 6.68 K2V 720 1
23 HD 197286 PM* 20 44 10.2207500229 -39 13 30.859306335   9.98 9.50     F5V 62 1
24 WASP-4b Pl 23 34 15.0858223039 -42 03 41.049468209           ~ 117 1
25 BD+41 4831 * 23 39 05.8101319829 +42 27 57.503480354   10.88 10.47     F8V 70 1

    Equat.    Gal    SGal    Ecl

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2020.07.13-07:52:10

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