With four years of nearly-continuous photometry from Kepler, we are finally
in a good position to apply asteroseismology to \$\gamma\$ 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 \$\gamma\$ Doradus stars that are too rapidly rotating to present
rotational splittings. Based on the non uniformity of their period spacings, we
define the observable \$\Sigma\$ as the slope of the period spacing when plotted
as a function of period. We provide a one-to-one relation between this
observable \$\Sigma\$ and the internal rotation, which applies widely in the
instability strip of \$\gamma\$ Doradus stars. We apply the diagnostic to a
handful of stars observed by Kepler. Thanks to g-modes in \$\gamma\$ 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.
%0 Generic
%1 citeulike:14170041
%A Ouazzani, Rhita-Maria
%A Salmon, S. J. A. J.
%A Antoci, V. L.
%A Bedding, T. R.
%A Murphy, S. J.
%A Roxburgh, I. W.
%D 2016
%K imported
%T A new asteroseismic diagnostic for internal rotation in \$\gamma\$ Doradus stars
%U http://arxiv.org/abs/1610.06184
%X With four years of nearly-continuous photometry from Kepler, we are finally
in a good position to apply asteroseismology to \$\gamma\$ 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 \$\gamma\$ Doradus stars that are too rapidly rotating to present
rotational splittings. Based on the non uniformity of their period spacings, we
define the observable \$\Sigma\$ as the slope of the period spacing when plotted
as a function of period. We provide a one-to-one relation between this
observable \$\Sigma\$ and the internal rotation, which applies widely in the
instability strip of \$\gamma\$ Doradus stars. We apply the diagnostic to a
handful of stars observed by Kepler. Thanks to g-modes in \$\gamma\$ 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.
@misc{citeulike:14170041,
abstract = {{With four years of nearly-continuous photometry from Kepler, we are finally
in a good position to apply asteroseismology to \$\gamma\$ 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 \$\gamma\$ Doradus stars that are too rapidly rotating to present
rotational splittings. Based on the non uniformity of their period spacings, we
define the observable \$\Sigma\$ as the slope of the period spacing when plotted
as a function of period. We provide a one-to-one relation between this
observable \$\Sigma\$ and the internal rotation, which applies widely in the
instability strip of \$\gamma\$ Doradus stars. We apply the diagnostic to a
handful of stars observed by Kepler. Thanks to g-modes in \$\gamma\$ 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.}},
added-at = {2019-03-25T08:20:55.000+0100},
archiveprefix = {arXiv},
author = {Ouazzani, Rhita-Maria and Salmon, S. J. A. J. and Antoci, V. L. and Bedding, T. R. and Murphy, S. J. and Roxburgh, I. W.},
biburl = {https://www.bibsonomy.org/bibtex/2cfc7a5755e55b63642e6fa83ebe79c3a/ericblackman},
citeulike-article-id = {14170041},
citeulike-linkout-0 = {http://arxiv.org/abs/1610.06184},
citeulike-linkout-1 = {http://arxiv.org/pdf/1610.06184},
day = 19,
eprint = {1610.06184},
interhash = {0695b63355bdae7b522b46b17f552084},
intrahash = {cfc7a5755e55b63642e6fa83ebe79c3a},
keywords = {imported},
month = oct,
posted-at = {2016-10-22 05:48:07},
priority = {2},
timestamp = {2019-03-25T08:20:55.000+0100},
title = {{A new asteroseismic diagnostic for internal rotation in \$\gamma\$ Doradus stars}},
url = {http://arxiv.org/abs/1610.06184},
year = 2016
}