Near-critical magnetic fields in Kepler red giants

Open Access

Table 2.

Results of fitting asymptotic mode frequencies (including magnetic effects in a non-perturbative way) to the observed frequencies of the red giants in our sample.

KIC Id	ΔΠ₁	δω₀/2π	a_asym	σ_B	⟨B_r²⟩^0.5	B₀
	(s)	(μHz)	–	( × 10⁻³ R_★)	kG	MG
KIC3326392	$79 . 43_{- 0.60}^{+ 0.37}$ $Mathematical equation: $ 79.43^{+0.37}_{-0.60} $$	$2 . 76_{- 0.13}^{+ 0.11}$ $Mathematical equation: $ 2.76^{+0.11}_{-0.13} $$	$0 . 322_{- 0.008}^{+ 0.025}$ $Mathematical equation: $ 0.322^{+0.025}_{-0.008} $$	$1 . 76_{- 0.05}^{+ 0.02}$ $Mathematical equation: $ 1.76^{+0.02}_{-0.05} $$ / $2 . 97_{- 0.09}^{+ 0.02}$ $Mathematical equation: $ 2.97^{+0.02}_{-0.09} $$	215 ± 7	5.1
KIC5700274	$81 . 02_{- 0.31}^{+ 0.26}$ $Mathematical equation: $ 81.02^{+0.26}_{-0.31} $$	$1 . 15_{- 0.11}^{+ 0.10}$ $Mathematical equation: $ 1.15^{+0.10}_{-0.11} $$	$0 . 309_{- 0.018}^{+ 0.024}$ $Mathematical equation: $ 0.309^{+0.024}_{-0.018} $$	$3 . 06_{- 0.50}^{+ 0.33}$ $Mathematical equation: $ 3.06^{+0.33}_{-0.50} $$	179 ± 11	1.4
KIC7458743	$79 . 22_{- 0.15}^{+ 0.12}$ $Mathematical equation: $ 79.22^{+0.12}_{-0.15} $$	$0 . 70_{- 0.06}^{+ 0.04}$ $Mathematical equation: $ 0.70^{+0.04}_{-0.06} $$	$0 . 290_{- 0.013}^{+ 0.017}$ $Mathematical equation: $ 0.290^{+0.017}_{-0.013} $$	$2 . 69_{- 0.74}^{+ 0.74}$ $Mathematical equation: $ 2.69^{+0.74}_{-0.74} $$	111 ± 4	0.8
KIC9227589	$87 . 11_{- 0.19}^{+ 0.44}$ $Mathematical equation: $ 87.11^{+0.44}_{-0.19} $$	$4 . 84_{- 0.05}^{+ 0.09}$ $Mathematical equation: $ 4.84^{+0.09}_{-0.05} $$	$0 . 377_{- 0.011}^{+ 0.006}$ $Mathematical equation: $ 0.377^{+0.006}_{-0.011} $$	$3 . 85_{- 0.03}^{+ 0.02}$ $Mathematical equation: $ 3.85^{+0.02}_{-0.03} $$	681 ± 20	5.5
KIC9697268	$82 . 76_{- 0.41}^{+ 0.24}$ $Mathematical equation: $ 82.76^{+0.24}_{-0.41} $$	$3 . 33_{- 0.11}^{+ 0.09}$ $Mathematical equation: $ 3.33^{+0.09}_{-0.11} $$	$0 . 259_{- 0.008}^{+ 0.007}$ $Mathematical equation: $ 0.259^{+0.007}_{-0.008} $$	$2 . 52_{- 0.04}^{+ 0.04}$ $Mathematical equation: $ 2.52^{+0.04}_{-0.04} $$	331 ± 36	3.3
KIC10613561	$85 . 59_{- 0.22}^{+ 0.27}$ $Mathematical equation: $ 85.59^{+0.27}_{-0.22} $$	$1 . 66_{- 0.10}^{+ 0.13}$ $Mathematical equation: $ 1.66^{+0.13}_{-0.10} $$	$0 . 157_{- 0.010}^{+ 0.010}$ $Mathematical equation: $ 0.157^{+0.010}_{-0.010} $$	$2 . 10_{- 0.23}^{+ 0.25}$ $Mathematical equation: $ 2.10^{+0.25}_{-0.23} $$ / $4 . 47_{- 0.38}^{+ 0.20}$ $Mathematical equation: $ 4.47^{+0.20}_{-0.38} $$	377 ± 39	1.4
KIC10976412	$80 . 38_{- 0.14}^{+ 0.17}$ $Mathematical equation: $ 80.38^{+0.17}_{-0.14} $$	$0 . 54_{- 0.06}^{+ 0.06}$ $Mathematical equation: $ 0.54^{+0.06}_{-0.06} $$	$0 . 273_{- 0.026}^{+ 0.027}$ $Mathematical equation: $ 0.273^{+0.027}_{-0.026} $$	$3 . 59_{- 0.88}^{+ 1.23}$ $Mathematical equation: $ 3.59^{+1.23}_{-0.88} $$	114 ± 7	0.8
KIC11408970	$84 . 43_{- 0.11}^{+ 0.12}$ $Mathematical equation: $ 84.43^{+0.12}_{-0.11} $$	$1 . 74_{- 0.04}^{+ 0.05}$ $Mathematical equation: $ 1.74^{+0.05}_{-0.04} $$	$0 . 116_{- 0.003}^{+ 0.003}$ $Mathematical equation: $ 0.116^{+0.003}_{-0.003} $$	$2 . 39_{- 0.08}^{+ 0.12}$ $Mathematical equation: $ 2.39^{+0.12}_{-0.08} $$ / $3 . 24_{- 0.18}^{+ 0.08}$ $Mathematical equation: $ 3.24^{+0.08}_{-0.18} $$	333 ± 26	1.9

Notes. For KIC 3326392, KIC 10613561, and KIC 11408970, the distribution for σ_B is bimodal and the possible solutions are given. The last two columns give the average magnetic field strengths in the core ⟨B_r²⟩^0.5 measured using a stellar model, and the field strength B₀ at the center for the median model (in MG).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.