Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?

被引：47

作者：

Brown, D. J. A. ^{[1
,2
,3
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[2] Queens Univ Belfast, Sch Math & Phys, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland

[3] Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 442卷 / 02期

关键词：

stars: evolution; planetary systems; stars: rotation; TRANSITING EXTRASOLAR PLANETS; SPIN-ORBIT ALIGNMENT; HOT-JUPITER; SOLAR-TYPE; STELLAR ROTATION; DIFFERENTIAL ROTATION; PHYSICAL-PROPERTIES; PROGRADE ORBIT; GIANT PLANET; COOL STARS;

D O I：

10.1093/mnras/stu950

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a sample of 68 planet-hosting stars, I carry out a comparison of isochrone fitting and gyrochronology to investigate whether tidal interactions between the stars and their planets are leading to underestimated ages using the latter method. I find a slight tendency for isochrones to produce older age estimates but find no correlation with tidal time-scale, although for some individual systems the effect of tides might be leading to more rapid rotation than expected from the stars' isochronal age, and therefore an underestimated gyrochronology age. By comparing to planetary systems in stellar clusters, I also find that in some cases isochrone fitting can overestimate the age of the star. The evidence for any bias on a sample-wide level is inconclusive. I also consider the subset of my sample for which the sky-projected alignment angle between the stellar rotation axis and the planet's orbital axis has been measured, finding similar patterns to those identified in the full sample. However, small sample sizes for both the misaligned and aligned systems prevent strong conclusions from being drawn.

引用

页码：1844 / 1862

页数：19

共 122 条

[1] Planck 2013 results. I. Overview of products and scientific results [J].

Ade, P. A. R. ;

Aghanim, N. ;

Alves, M. I. R. ;

Armitage-Caplan, C., I ;

Amaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Ausse, H. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Barrenass, R. ;

Bartelmann, M. ;

Bartlett, J. G. ;

Bartolo, N. ;

Basak, S. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bertincourt, B. ;

Bethermin, M. ;

Bielewicz, P. ;

Bikmaev, I. ;

Blanchard, A. ;

Bobin, J. ;

Bock, J. J. ;

Boehringer, H. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bourdin, H. ;

Bowyer, J. W. ;

Bridges, M. ;

Brown, M. L. ;

Bucher, M. ;

Burenin, R. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cappellini, B. ;

Cardoso, J. -F. ;

Carr, R. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[2] LOW STELLAR OBLIQUITIES IN COMPACT MULTIPLANET SYSTEMS [J].

Albrecht, Simon ;

Winn, Joshua N. ;

Marcy, Geoffrey W. ;

Howard, Andrew W. ;

Isaacson, Howard ;

Johnson, John A. .

ASTROPHYSICAL JOURNAL, 2013, 771 (01)

[3] OBLIQUITIES OF HOT JUPITER HOST STARS: EVIDENCE FOR TIDAL INTERACTIONS AND PRIMORDIAL MISALIGNMENTS [J].

Albrecht, Simon ;

Winn, Joshua N. ;

Johnson, John A. ;

Howard, Andrew W. ;

Marcy, Geoffrey W. ;

Butler, R. Paul ;

Arriagada, Pamela ;

Crane, Jeffrey D. ;

Shectman, Stephen A. ;

Thompson, Ian B. ;

Hirano, Teruyuki ;

Bakos, Gaspar ;

Hartman, Joel D. .

ASTROPHYSICAL JOURNAL, 2012, 757 (01)

[4] Transiting exoplanets from the CoRoT space mission: II. CoRoT-Exo-2b: A transiting planet around an active G star [J].

Alonso, R. ;

Auvergne, M. ;

Baglin, A. ;

Ollivier, M. ;

Moutou, C. ;

Rouan, D. ;

Deeg, H.J. ;

Aigrain, S. ;

Almenara, J.M. ;

Barbieri, M. ;

Barge, P. ;

Benz, W. ;

Bordé, P. ;

Bouchy, F. ;

De La Reza, R. ;

Deleuil, M. ;

Dvorak, R. ;

Erikson, A. ;

Fridlund, M. ;

Gillon, M. ;

Gondoin, P. ;

Guillot, T. ;

Hatzes, A. ;

Hébrard, G. ;

Kabath, P. ;

Jorda, L. ;

Lammer, H. ;

Léger, A. ;

Llebaria, A. ;

Loeillet, B. ;

Magain, P. ;

Mayor, M. ;

Mazeh, T. ;

Pätzold, M. ;

Pepe, F. ;

Pont, F. ;

Queloz, D. ;

Rauer, H. ;

Shporer, A. ;

Schneider, J. ;

Stecklum, B. ;

Udry, S. ;

Wuchterl, G. .

Astronomy and Astrophysics, 2008, 482 (03)

[5] On the rotational behaviour of parent stars of extrasolar planets [J].

Alves, S. ;

do Nascimento, J. D., Jr. ;

De Medeiros, J. R. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 408 (03) :1770-1777

[6] Thermal emission at 3.6-8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star [J].

Anderson, D. R. ;

Smith, A. M. S. ;

Madhusudhan, N. ;

Wheatley, P. J. ;

Cameron, A. Collier ;

Hellier, C. ;

Campo, C. ;

Gillon, M. ;

Harrington, J. ;

Maxted, P. F. L. ;

Pollacco, D. ;

Queloz, D. ;

Smalley, B. ;

Triaud, A. H. M. J. ;

West, R. G. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2013, 430 (04) :3422-3431

[7] WASP-44b, WASP-45b and WASP-46b: three short-period, transiting extrasolar planets [J].

Anderson, D. R. ;

Cameron, A. Collier ;

Gillon, M. ;

Hellier, C. ;

Jehin, E. ;

Lendl, M. ;

Maxted, P. F. L. ;

Queloz, D. ;

Smalley, B. ;

Smith, A. M. S. ;

Triaud, A. H. M. J. ;

West, R. G. ;

Pepe, F. ;

Pollacco, D. ;

Segransan, D. ;

Todd, I. ;

Udry, S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 422 (03) :1988-1998

[8] Spin-orbit measurements and refined parameters for the exoplanet systems WASP-22 and WASP-26 [J].

Anderson, D. R. ;

Cameron, A. Collier ;

Gillon, M. ;

Hellier, C. ;

Jehin, E. ;

Lendl, M. ;

Queloz, D. ;

Smalley, B. ;

Triaud, A. H. M. J. ;

Vanhuysse, M. .

ASTRONOMY & ASTROPHYSICS, 2011, 534

[9]

Anderson D. R., 2014, ARXIV14021482

[10]

Anderson D. R., 2013, ARXIV13105654

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