The two-dimensional internal rotation of KIC11145123. (arXiv:2111.06853v1 [astro-ph.SR])
<a href="http://arxiv.org/find/astro-ph/1/au:+Hatta_Y/0/1/0/all/0/1">Yoshiki Hatta</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sekii_T/0/1/0/all/0/1">Takashi Sekii</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Takata_M/0/1/0/all/0/1">Masao Takata</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kurtz_D/0/1/0/all/0/1">Donald W. Kurtz</a>
The two-dimensional internal rotation of KIC11145123 has been inferred via
asteroseismology. Based on the Optimally Localized Averaging method and a
simple three-zone modeling of the internal rotation, we have found evidence for
a contrast between the internal rotation of the radiative region and that of
the convective core; the radiative region rotates almost uniformly throughout
the region, but the convective core may be rotating about 6 times faster than
the radiative region above. We have also found a marginally significant
evidence of latitudinal differential rotation in the outer envelope. These
newly indicated features of the internal rotation of the star can help us
further constrain the theory of angular momentum transport inside stars as well
as understand the complex physical properties of the star, which was once
thought to be a main-sequence A-type star but recently has been proposed to be
a blue straggler, based on spectroscopy.
The two-dimensional internal rotation of KIC11145123 has been inferred via
asteroseismology. Based on the Optimally Localized Averaging method and a
simple three-zone modeling of the internal rotation, we have found evidence for
a contrast between the internal rotation of the radiative region and that of
the convective core; the radiative region rotates almost uniformly throughout
the region, but the convective core may be rotating about 6 times faster than
the radiative region above. We have also found a marginally significant
evidence of latitudinal differential rotation in the outer envelope. These
newly indicated features of the internal rotation of the star can help us
further constrain the theory of angular momentum transport inside stars as well
as understand the complex physical properties of the star, which was once
thought to be a main-sequence A-type star but recently has been proposed to be
a blue straggler, based on spectroscopy.
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