This is a pre-copyedited, author-produced PDF of an article accepted for publication in MNRAS following peer review. The version of record "MNRAS (February 21, 2017) 465 (2): 2294-2309 "is available online at: http://mnras.oxfordjournals.org/content/465/2/2294
All documents in ORBi are protected by a user license.
[en] With four years of nearly-continuous photometry from Kepler, we are finally in a good position to apply asteroseismology to γ Doradus stars. In particular several analyses have demonstrated the possibility to detect non-uniform period spacings, which have been predicted to be directly related to rotation. In the present work, we define a new seismic diagnostic for rotation in γ Doradus stars that are too rapidly rotating to present rotational splittings. Based on the non uniformity of their period spacings, we define the observable Σ as the slope of the period spacing when plotted as a function of period. We provide a one-to-one relation between this observable Σ and the internal rotation, which applies widely in the instability strip of γ Doradus stars. We apply the diagnostic to a handful of stars observed by Kepler. Thanks to g-modes in γ Doradus stars, we are now able to determine the internal rotation of stars on the lower main sequence, which is still not possible for Sun-like stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Ouazzani, Rhita-Maria
Salmon, Sébastien ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
Antoci, V.
Bedding, T. R.
Murphy, S. J.
Roxburgh, I. W.
Language :
English
Title :
A new asteroseismic diagnostic for internal rotation in γ Doradus stars
Asplund M., Grevesse N., Sauval A. J., Scott P., 2009, ARA&A, 47, 481
Ballot J., Lignières F., Prat V., Reese D. R., Rieutord M., 2012, in Shibahashi H., Takata M., Lynas-Gray A. E., eds, ASP Conf. Ser. Vol. 462, Progress in Solar/Stellar Physics with Helio- and Asteroseismology. Astron. Soc. Pac., San Francisco, p. 389
Beck P. G. et al., 2012, Nature, 481, 55
Bedding T. R., Murphy S. J., Colman I. L., Kurtz D. W., 2015, in García R. A., Ballot J., eds, EPJ Web Conf., vol. 101, The Space Photometry Revolution. EDP Sciences, Les Ulis, p. 1005
Ceillier T., Eggenberger P., García R. A., Mathis S., 2013, A&A, 555, A54
Cowling T. G., 1941, MNRAS, 101, 367
Deheuvels S. et al., 2012, ApJ, 756, 19
Dintrans B., Rieutord M., 2000, A&A, 354, 86
Dupret M.-A., Grigahcène A., Garrido R., Gabriel M., Scuflaire R., 2005, A&A, 435, 927
Eckart C., 1960, Q. J. R. Meteorol. Soc., 89, 567
Eggenberger P., Montalbán J., Miglio A., 2012, A&A, 544, L4
Ferguson J. W., Alexander D. R., Allard F., Barman T., Bodnarik J. G., Hauschildt P. H., Heffner-Wong A., Tamanai A., 2005, ApJ, 623, 585
Formicola A. et al., 2004, Phys. Lett. B, 591, 61
Fuller J., Lecoanet D., Cantiello M., Brown B., 2014, ApJ, 796, 17
Godart M., Noels A., Dupret M.-A., Lebreton Y., 2009, MNRAS, 396, 1833
Grigahcène A. et al., 2010, ApJ, 713, L192
Guzik J. A., Kaye A. B., Bradley P. A., Cox A. N., Neuforge C., 2000, ApJ, 542, L57
Hareter M., 2012, Astron. Nachr., 333, 1048
Heger A., Woosley S. E., Spruit H. C., 2005, ApJ, 626, 350
Iglesias C. A., Rogers F. J., 1996, ApJ, 464, 943
Keen M. A., Bedding T. R., Murphy S. J., Schmid V. S., Aerts C., Tkachenko A., Ouazzani R.-M., Kurtz D. W., 2015, MNRAS, 454, 1792
Kippenhahn R., Weigert A., 1994, Stellar Structure and Evolution. Springer-Verlag, Berlin
Kurtz D. W., Saio H., Takata M., Shibahashi H., Murphy S. J., Sekii T., 2014, MNRAS, 444, 102
Kurucz R. L., 1998, Highlights Astron., 11, 646
Ledoux P., 1951, ApJ, 114, 373
Lee U., Baraffe I., 1995, A&A, 301, 419
Lee U., Saio H., 1987, MNRAS, 224, 513
Lenz P., Breger M., 2005, Commun. Asteroseismol., 146, 53
Marques J. P. et al., 2013, A&A, 549, A74
Miglio A., Montalbán J., Noels A., Eggenberger P., 2008, MNRAS, 386, 1487
Mosser B. et al., 2012, A&A, 548, A10
Murphy S. J., Fossati L., Bedding T. R., Saio H., Kurtz D. W., Grassitelli L., Wang E. S., 2016, MNRAS, 459, 1201
Ouazzani R.-M., Dupret M.-A., Reese D. R., 2012, A&A, 547, A75
Ouazzani R.-M., Roxburgh I. W., Dupret M.-A., 2015, A&A, 579, A116
Press W. H., Teukolsky S. A., Vetterling W. T., Flannery B. P., 1996, Numerical Recipes in Fortran 77: the Art of Scientific Computing. Second Edition. Vol. 1. Cambridge Univ. Press, Cambridge
Reese D., Lignières F., Rieutord M., 2006, A&A, 455, 621
Reese D. R., MacGregor K. B., Jackson S., Skumanich A., Metcalfe T. S., 2009, A&A, 506, 189
Rogers F. J., Nayfonov A., 2002, ApJ, 576, 1064
Roxburgh I. W., 2006, A&A, 454, 883
Royer F., 2009, in Rozelot J.-P., Neiner C., eds, Lecture Notes in Physics, Vol. 765, The Rotation of Sun and Stars. Springer-Verlag, Berlin, p. 207
Saio H., Kurtz D. W., Takata M., Shibahashi H., Murphy S. J., Sekii T., Bedding T. R., 2015, MNRAS, 447, 3264
Salmon S. J. A. J., Montalbán J., Reese D. R., Dupret M.-A., Eggenberger P., 2014, A&A, 569, A18
Schatzman E., 1962, Ann. Astrophys., 25, 18
Schmid V. S. et al., 2015, A&A, 584, A35
Scuflaire R., Théado S., Montalbán J., Miglio A., Bourge P.-O., Godart M., Thoul A., Noels A., 2008a, Ap&SS, 316, 83
Scuflaire R., Montalbán J., Théado S., Bourge P., Miglio A., Godart M., Thoul A., Noels A., 2008b, Ap&SS, 316, 149
Tassoul M., 1980, ApJS, 43, 469
Tkachenko A. et al., 2013, A&A, 556, A52
Unno W., Osaki Y., Ando H., Saio H., Shibahashi H., 1989, Nonradial Oscillations of Stars. Univ. Tokyo Press, Tokyo
Uytterhoeven K. et al., 2011, A&A, 534, A125
Van Reeth T. et al., 2015, ApJS, 218, 27
Van Reeth T., Tkachenko A., Aerts C., 2016, A&A, 593, A120
Zwintz K., Fossati L., Ryabchikova T., Kaiser A., Gruberbauer M., Barnes T. G., Baglin A., Chaintreuil S., 2013, A&A, 550, A121