\newcommand{\ensuremath}{} %\newcommand{\mesa}{\code{MESA}} \newcommand{\MESA}{\mesa} \newcommand{\ga}{\gt} \newcommand{\varv}{v} \newcommand{\vca}{v_{\mathrm {c}}} \newcommand{\mso}{\,\mathrm{M}_\odot} \newcommand{\rso}{\,{\rm R}_\odot} \newcommand{\lso}{\,{\rm L}_\odot} \newcommand{\hrd}{HR diagram} \newcommand{\kms}{\, {\rm km}\, {\rm s}^{-1}} \newcommand{\egs}{\, {\rm erg}\, {\rm s}^{-1}} \newcommand{\teff}{\log\, T_{\rm }\,} \newcommand{\llso}{\log\, L/ L_\odot \,} \newcommand{\simle}{\mathrel{\hbox{\rlap{\hbox{\lower4pt\hbox{$\sim$}}}\hbox{$$}}}} \newcommand{\grad}{\nabla} \newcommand{\adrad}{\nabla_{\mathrm{\!rad}}} \newcommand{\adgrad}{\nabla_{\mathrm{\!ad}}} \newcommand{\mugrad}{\nabla_{\!\mu}} \newcommand{\P}{\mathrm{P}} \newcommand{\p}{\mathrm{P}} \newcommand{\T}{T} \newcommand{\cp}{c_{\mathrm{P}}} \newcommand{\hp}{H_{\mathrm{P}}} % macros for naming codes, plus shortcuts for some common ones %\newcommand{\code}[1]{\texttt{#1}} \newcommand{\code}{} \newcommand{\flash}{FLASH} \newcommand{\kepler}{\textit{Kepler} } \newcommand{\Kepler}{\textit{Kepler}} \newcommand{\KEPLER}{\textit{Kepler}} \newcommand{\nonsmoker}{NON-SMOKER} \newcommand{\mesa}{\code{MESA}} \newcommand{\MESA}{\mesa} \newcommand{\STERN}{STERN} \newcommand{\ADIPLS}{\code{ADIPLS}} \newcommand{\DSEP}{DSEP} \newcommand{\KIC}{\rm{KIC}8366239} \newcommand{\KID}{\rm{KIC}5006817} % modules for MESA, from the original instrument paper \newcommand{\alert}{\code{alert}} \newcommand{\utils}{\code{utils}} \newcommand{\const}{\code{const}} \newcommand{\chem}{\code{chem}} \newcommand{\diffusion}{\code{diffusion}} \newcommand{\mtx}{\code{mtx}} \newcommand{\mesastar}{\mesa~\code{star}} \newcommand{\MESAstar}{\mesastar} \newcommand{\num}{\code{num}} \newcommand{\nuc}{\code{nuc}} \newcommand{\kap}{\code{kap}} \newcommand{\eos}{\code{eos}} \newcommand{\intone}{\code{interp\_1d}} \newcommand{\inttwo}{\code{interp\_2d}} \newcommand{\atm}{\code{atm}} \newcommand{\diff}{\code{diffusion}} \newcommand{\mlt}{\code{mlt}} \newcommand{\rates}{\code{rates}} \newcommand{\net}{\code{net}} \newcommand{\neu}{\code{neu}} \newcommand{\weak}{\code{weaklib}} \newcommand{\screen}{\code{screen}} \newcommand{\ioniz}{\code{ionization}} \newcommand{\adipls}{\code{adipls}} \newcommand{\colors}{\code{colors}} \newcommand{\reaclib}{\code{reaclib}} \newcommand{\karo}{\code{karo}} \newcommand{\astero}{\code{astero}} \newcommand{\sdk}{\code{SDK}} \newcommand{\SDK}{\sdk} %derivatives \newcommand{\dif}{\ensuremath{\mathrm{d}}} \newcommand{\D}{{\mathrm d}} \newcommand{\DD}{{\,\D\!\!\;}} \newcommand{\ddt}[1]{\frac{\partial #1}{\partial t}} %partial time derivative \newcommand{\DDt}[1]{\frac{\dif #1}{\dif t}} %total time derivative \newcommand{\ddx}[1]{\frac{\partial #1}{\partial x}} %partial derivative wrt x \newcommand{\ddy}[1]{\frac{\partial #1}{\partial y}} %partial derivative wrt y \newcommand{\DDy}[1]{\frac{\dif #1}{\dif y}} %total derivative wrt y \newcommand{\ddz}[1]{\frac{\partial #1}{\partial z}} %partial derivative wrt z \newcommand{\ppl}[2]{\left(\frac{\partial\ln #1}{\partial\ln #2}\right)_{\rho,T}} \newcommand{\ppll}[2]{\left(\frac{\partial\ln #1}{\partial\ln #2}\right)_{\rho,T,\{X_{j\neq i}\}}} \newcommand{\ddl}[2]{\frac{{\rm d}\ln #1}{{\rm d}\ln #2}} \newcommand{\DxDy}[2]{{\frac{\D{#1}}{\D{#2}}}} \newcommand{\dxdy}[2]{{\frac{\partial{#1}}{\partial{#2}}}} \newcommand{\dxdyind}[3]{{\Brak{\frac{\D{#1}}{\D{#2}}}_{{#3}}}} \newcommand{\dxdycz}[3]{{\Brak{\frac{\partial{#1}}{\partial{#2}}}_{{#3}}}} % nuclides % base command \newcommand{\nuclei}[2]{\ensuremath{\mathrm{^{#1}#2}}} % nuclides, with most highest abundance or longest half-life as default % for example, \carbon produces ^{12}C, \carbon[13] produces ^{13}C \newcommand{\neutron}{\ensuremath{n}} \newcommand{\nt}{\neutron} \newcommand{\proton}{\ensuremath{p}} \newcommand{\pt}{\proton} \newcommand{\photon}{\ensuremath{\gamma}} \newcommand{\hydrogen}[1][1]{\nuclei{#1}{H}} \newcommand{\helium}[1][4]{\nuclei{#1}{He}} \newcommand{\lithium}[1][7]{\nuclei{#1}{Li}} \newcommand{\beryllium}[1][9]{\nuclei{#1}{Be}} \newcommand{\boron}[1][11]{\nuclei{#1}{B}} \newcommand{\carbon}[1][12]{\nuclei{#1}{C}} \newcommand{\nitrogen}[1][14]{\nuclei{#1}{N}} \newcommand{\oxygen}[1][16]{\nuclei{#1}{O}} \newcommand{\fluorine}[1][19]{\nuclei{#1}{F}} \newcommand{\neon}[1][20]{\nuclei{#1}{Ne}} \newcommand{\sodium}[1][23]{\nuclei{#1}{Na}} \newcommand{\magnesium}[1][24]{\nuclei{#1}{Mg}} \newcommand{\aluminum}[1][27]{\nuclei{#1}{Al}} \newcommand{\silicon}[1][28]{\nuclei{#1}{Si}} \newcommand{\phosphorus}[1][31]{\nuclei{#1}{P}} \newcommand{\sulfur}[1][32]{\nuclei{#1}{S}} \newcommand{\chlorine}[1][35]{\nuclei{#1}{Cl}} \newcommand{\argon}[1][36]{\nuclei{#1}{Ar}} \newcommand{\potassium}[1][39]{\nuclei{#1}{K}} \newcommand{\calcium}[1][40]{\nuclei{#1}{Ca}} \newcommand{\scandium}[1][45]{\nuclei{#1}{Sc}} \newcommand{\titanium}[1][48]{\nuclei{#1}{Ti}} \newcommand{\vanadium}[1][51]{\nuclei{#1}{V}} \newcommand{\chromium}[1][52]{\nuclei{#1}{Cr}} \newcommand{\manganese}[1][55]{\nuclei{#1}{Mn}} \newcommand{\iron}[1][56]{\nuclei{#1}{Fe}} \newcommand{\cobalt}[1][59]{\nuclei{#1}{Co}} \newcommand{\nickel}[1][58]{\nuclei{#1}{Ni}} \newcommand{\copernicum}[1][285]{\nuclei{#1}{Cn}} % typesetting of units % basic unit typesetteing \newcommand{\unitspace}{\ensuremath{\,}} \newcommand{\usp}{\unitspace} \newcommand{\numberspace}{\ensuremath{\;}} \newcommand{\nsp}{\numberspace} \newcommand{\unitstyle}[1]{\ensuremath{\mathrm{#1}}} \newcommand{\power}[2]{\ensuremath{{#1}^{#2}}} \newcommand{\ee}[1]{\ensuremath{\times 10^{#1}}} % prefixes \newcommand{\nano}{\unitstyle{n}} \newcommand{\milli}{\unitstyle{m}} \newcommand{\centi}{\unitstyle{c}} \newcommand{\kilo}{\unitstyle{k}} \newcommand{\Mega}{\unitstyle{M}} \newcommand{\Giga}{\unitstyle{G}} % base units, mks \newcommand{\meter}{\unitstyle{m}} \newcommand{\kilogram}{\kilo\gram} \newcommand{\second}{\unitstyle{s}} \newcommand{\Kelvin}{\unitstyle{K}} \newcommand{\K}{\Kelvin} %degrees Kelvin % base units, cgs \newcommand{\cm}{\centi\meter} \newcommand{\gram}{\unitstyle{g}} % derived units \newcommand{\grampercc}{\gram\usp\power{\cm}{-3}} %mass density \newcommand{\grampersquarecm}{\gram\usp\power{\cm}{-2}} %column depth \newcommand{\squarecmpergram}{\power{\cm}{2}\usp\power{\gram}{-1}} %opacity \newcommand{\GramPerCc}{\grampercc} \newcommand{\GramPerSc}{\grampersquarecm} \newcommand{\GramSc}{\gram\usp\power{\cm}{2}} \newcommand{\columnunit}{\grampersquarecm} \newcommand{\dyne}{\unitstyle{dyn}} %dyne \newcommand{\erg}{\unitstyle{ergs}} %ergs \newcommand{\ergs}{\erg} \newcommand{\gauss}{\unitstyle{G}} %gauss \newcommand{\ergspersecond}{\erg\unitspace\power{\second}{-1}} \newcommand{\ergspergram}{\erg\unitspace\power{\gram}{-1}} \newcommand{\ergspergs}{\erg\unitspace\power{\gram}{-1}\unitspace\power{\second}{-1}} %angular momentum \newcommand{\ergssecond}{\erg\unitspace\second} \newcommand{\cgsflux}{\erg\unitspace\power{\cm}{-2}\usp\power{\second}{-1}} % Nuclear and atomic units \newcommand{\amu}{\unitstyle{u}} %atomic mass unit \newcommand{\angstrom}{\mbox{\AA}} %Angstrom \newcommand{\fermi}{\unitstyle{fm}} %fermi \newcommand{\eV}{\unitstyle{eV}} %eV \newcommand{\keV}{\kilo\eV} %Kev \newcommand{\MeV}{\Mega\eV} %MeV % solar and astronomical units \newcommand{\Msun}{\ensuremath{\unitstyle{M}_\odot}} \newcommand{\Lsun}{\ensuremath{\unitstyle{L}_{\odot}}} \newcommand{\Rsun}{\ensuremath{\unitstyle{R}_{\odot}}} \newcommand{\Zsun}{\ensuremath{Z_{\odot}}} \newcommand{\Myr}{\Mega\yr} \newcommand{\Gyr}{\Giga\yr} \newcommand{\parsec}{\unitstyle{pc}} \newcommand{\kpc}{\kilo\parsec} %kiloparsec \newcommand{\mJy}{\unitstyle{\mu Jy}} %micro Jansky \newcommand{\Msunyr}{\Msun\,\power{\yr}{-1}} \newcommand{\MJ}{\ensuremath{\mathrm{M_J}}} \newcommand{\RJ}{\ensuremath{\mathrm{R_J}}} \newcommand{\AU}{\unitstyle{AU}} % misc. units \newcommand{\minute}{\unitstyle{min}} %minute \newcommand{\hour}{\unitstyle{hr}} %hour \newcommand{\yr}{\unitstyle{yr}} %year \newcommand{\km}{\kilo\meter} %kilometers \newcommand{\Hz}{\unitstyle{Hz}} %Hertz \newcommand{\ksec}{\kilo\second} %kilosecond \newcommand{\kms}{\ensuremath{\mathrm{km}\,\second^{-1}}} \newcommand{\vcrit}{{\varv_{\mathrm{crit}}}} \newcommand{\vkep}{{\varv_{\mathrm{kep}}}} \newcommand{\vsurf}{{\varv_{\mathrm{surf}}}} \newcommand{\mol}{\unitstyle{mol}}% mole \newcommand{\barn}{\unitstyle{b}} %barn \newcommand{\gcms}{\, {\rm g}\, {\rm cm}^{2}\, {\rm s}^{-1}} \newcommand{\cms}{\, {\rm cm}^{2}\, {\rm s}^{-1}} % command to include values \newcommand{\unit}[2]{\ensuremath{#1\numberspace\mathrm{#2}}} \newcommand{\bvec}[1]{\ensuremath{\boldsymbol{#1}}} %boldface vector style \newcommand{\grad}{\bvec{\nabla}} %gradient \newcommand{\divr}{\nabla \cdot} %divergence \newcommand{\curl}{\bvec{\nabla \times}} %curl \newcommand{\lap}{\ensuremath{\nabla^2}} %Laplacian \newcommand{\btens}[1]{\ensuremath{\boldsymbol{\mathsf{#1}}}} \newcommand{\vcross}{\bvec{\times}} \newcommand{\vdot}{\bvec{\cdot}} % formatting.tex --- Formatting Macros %References \newcommand{\lSect}[1]{{\label{sec:#1}}} \newcommand{\lFig}[1]{{\label{fig:#1}}} \newcommand{\lEq}[1]{{\label{eq:#1}}} \newcommand{\lTab}[1]{{\label{tab:#1}}} \newcommand{\pFig}[1]{{\placefigure{fig:#1}}} \newcommand{\pTab}[1]{{\placetable{tab:#1}}} \newcommand{\Tabff}[1]{{\ref{tab:#1}}} \newcommand{\Tab}[1]{{Table~\Tabff{#1}}} \newcommand{\Tabs}[1]{{Tables~\Tabff{#1}}} \newcommand{\TabRange}[2]{{Tables~\Tabff{#1} - \Tabff{#2}}} \newcommand{\TabTwo}[2]{{Tables~\Tabff{#1} and \Tabff{#2}}} \newcommand{\pan}[1]{{\textit{#1}}} \newcommand{\Pan}[1]{{Panel~\pan{#1}}} \newcommand{\Pans}[1]{{Panels~\pan{#1}}} \newcommand{\FIGFF}[2]{{\ref{fig:#2}\pan{#1}}} \newcommand{\Figff}[1]{{\FIGFF{}{#1}}} \newcommand{\FIG}[2]{{Fig.~\FIGFF{#1}{#2}}} \newcommand{\Fig}[1]{{\FIG{}{#1}}} \newcommand{\FigTwo}[2]{{\FIGS{}{#1} and \FIGFF{}{#2}}} \newcommand{\FIGS}[2]{{Figs.~\FIGFF{#1}{#2}}} \newcommand{\Figs}[1]{{\FIGS{}{#1}}} \newcommand{\Figure}[1]{{Figure~\FIGFF{}{#1}}} \newcommand{\Figures}[1]{{Figures~\FIGFF{}{#1}}} \newcommand{\Sectff}[1]{{\ref{sec:#1}}} \newcommand{\Sect}[1]{{\S\Sectff{#1}}} \newcommand{\Appendix}[1]{{Appendix~\Sectff{#1}}} \newcommand{\Appendices}[1]{{Appendices~\Sectff{#1}}} \newcommand{\Sects}[1]{{\S\S\Sectff{#1}}} \newcommand{\Eqref}[1]{{\ref{eq:#1}}} \newcommand{\Eqff}[1]{{(\Eqref{#1})}} \newcommand{\EQ}[1]{{Equation~\Eqff{#1}}} \newcommand{\Equation}[1]{{Equation~\Eqff{#1}}} \newcommand{\Eq}[1]{{Eq.~\Eqff{#1}}} \newcommand{\Eqs}[1]{{Eqs.~\Eqff{#1}}} \newcommand{\Leg}[1]{{\textit{#1}}} % formatting macros \newcommand{\isofont}[1]{{\mathrm{#1}}} \newcommand{\isomass}[1]{{\ensuremath{\isofont{^{#1}}}}} \newcommand{\isocharge}[1]{{\ensuremath{\isofont{_{#1}}}}} \newcommand{\isotope}[3]{{\ensuremath{\isocharge{#1}\isomass{#2}\isofont{#3}}}} \newcommand{\Solar}[1]{{\ensuremath{\left[\right.}#1\ensuremath{\right.\left]}}} \newcommand{\I}[2]{{\isotope{}{#1}{#2}}} \newcommand{\El}[1]{{\I{}{#1}}} \newcommand{\Rat}[4]{{\I{#1}{#2}/\I{#3}{#4}}} \newcommand{\SolRatI}[4]{{\Solar{\Rat{#1}{#2}{#3}{#4}}}} \newcommand{\SolI}[2]{{\Solar{\I{#1}{#2}}}} \newcommand{\SolEl}[1]{{\Solar{\El{#1}}}} \newcommand{\Ep}[1]{{\ensuremath{10^{#1}}}} \newcommand{\E}[1]{{\ensuremath{\powersep\Ep{#1}}}} \newcommand{\EE}[2]{{\ensuremath{\powersep\Ep{#1#2}}}} \newcommand{\powersep}{\times} \newcommand{\Brak}[1]{{\left({#1}\right)}} \newcommand{\SBrak}[1]{{\left[{#1}\right]}} % symbols for commonly used expressions in the paper. The point is to define these for % consistent notation. Before defining or using an expression, check that someone hasn't defined it already. \newcommand{\epsnuc}{\ensuremath{\epsilon_{\mathrm{nuc}}}} % nuclear heating rate \newcommand{\epsgrav}{\ensuremath{\epsilon_{\mathrm{grav}}}} % gravitational heating rate \newcommand{\Teff}{\ensuremath{T_{\!\mathrm{eff}}}} % effective temperature \newcommand{\teff}{\Teff} \newcommand{\Ledd}{\ensuremath{L_{\mathrm{Edd}}}} % Eddington Luminosity \newcommand{\logg}{\ensuremath{\log g}} % log surface gravity \newcommand{\Tc}{\ensuremath{T_{\mathrm{\!c}}}} % central temperature \newcommand{\Pc}{\ensuremath{P_{\mathrm{\!c}}}} % central pressure \newcommand{\rhoc}{\ensuremath{\rho_{\mathrm{c}}}} % central density \newcommand{\CP}{\ensuremath{C_{\!P}}} % specific heat at constant pressure \newcommand{\Mdot}{\ensuremath{\dot{M}}} % mass-loss rate \newcommand{\Mc}{\ensuremath{M_{\rm c}}} % core mass \newcommand{\Mm}{\ensuremath{M_{\rm m}}} % modeled mass \newcommand{\Rc}{\ensuremath{R_{\rm c}}} % core radius \newcommand{\Lc}{\ensuremath{L_{\rm c}}} % core luminosity \newcommand{\Lacc}{\ensuremath{L_{\rm acc}}} % accretion luminosity % opacity stuff \newcommand{\kappath}{\ensuremath{\kappa_{\mathrm{th}}}} % opacity for thermal radiation orig.\ in planet \newcommand{\kappav}{\ensuremath{\kappa_{\mathrm{v}}}} % opacity for irradiation from star % for correction between baryon densities and mass-energy densities \newcommand{\nB}{\ensuremath{n_{\mathrm{B}}}} % baryon density % % symbols from the first instrument paper \newcommand{\alphaMLT}{\ensuremath{\alpha_{\mathrm{MLT}}}} % mixing length parameter \newcommand{\chirho}{\ensuremath{\chi_{\rho}}} % $(\partial\ln P/\partial\ln\rho)_T$ \newcommand{\chiT}{\ensuremath{\chi_{\raisebox{-2pt}{$\scriptstyle T$}}}} % $(\partial\ln P/\partial\ln T)_{\rho}$ \newcommand{\Gammaone}{\ensuremath{\Gamma_{\!1}}} % $ (\partial\ln P/\partial \ln\rho)_S$ \newcommand{\Dov}{\ensuremath{D_{\mathrm{ov}}}} % overshoot diffusion coefficient \newcommand{\nablaad}{\ensuremath{\nabla_{\!\mathrm{ad}}}} % adiabatic temperature gradient \newcommand{\nablarad}{\ensuremath{\nabla_{\!\mathrm{rad}}}} % radiative temperature gradient \newcommand{\nablaT}{\ensuremath{\nabla_{\!T}}} % actual temperature gradient \newcommand{\nablaL}{\ensuremath{\nabla_{\mathrm{\!L}}}} % Ledoux criterion \newcommand{\scaleheight}{\ensuremath{\lambda_P}} % pressure scale height \newcommand{\Pgas}{\ensuremath{P_{\!\!\mathrm{gas}}}} % gas pressure \newcommand{\timestep}{\ensuremath{\delta t}} % numerical timestep % % more symbols for radiation and gas pressures \newcommand{\Prad}{\ensuremath{P_{\!\!\mathrm{rad}}}} % radiation pressure \newcommand{\Lrad}{\ensuremath{L_{\mathrm{rad}}}} % radiative luminosity \newcommand{\tderiv}[3]{\ensuremath{\left(\frac{\partial #1}{\partial #2}\right)_{#3}}} %thermodynamic derivative \newcommand{\Lrho}{\ensuremath{L_{\mathrm{inv}}}} % luminosity at which a density inversion occurs \newcommand{\Lonset}{\ensuremath{L_{\mathrm{onset}}}} % luminosity at which the onset of convection occurs \newcommand{\Fconv}{\ensuremath{F_{\!\mathrm{conv}}}} % convective flux \newcommand{\Frad}{\ensuremath{F_{\!\mathrm{rad}}}} % radiative flux \newcommand{\supernab}{\ensuremath{\delta_\nabla}} % superadiabaticity, $\nablaT-\nablaad$ \newcommand{\superthresh}{\ensuremath{\delta_{\nabla,\mathrm{thresh}}}} % controls when MLT++ is applied \newcommand{\fsuper}{\ensuremath{f_\nabla}} % reduction factor for $\supernab$ \newcommand{\asuper}{\ensuremath{\alpha_\nabla}} % smoothing parameter for MLT++ \newcommand{\asupert}{\ensuremath{\widetilde{\asuper}}} % MLT++ parameter used in construction of \asuper \newcommand{\lambdamax}{\ensuremath{\lambda_{\max}}} % $ \max(\Lrad/\Ledd)$ \newcommand{\betamin}{\ensuremath{\beta_{\min}}} % $ \min(P/\Pgas)$ % mixing symbols \newcommand{\alphasc}{\ensuremath{\alpha_{\mathrm{sc}}}} % semiconvection efficiency parameter \newcommand{\alphath}{\ensuremath{\alpha_{\mathrm{th}}}} % thermohaline efficiency parameter \newcommand{\Dth}{\ensuremath{D_{\mathrm{th}}}} % thermohaline diffusion coefficient \newcommand{\EFc}{\ensuremath{E_{\mathrm{F,c}}}} % Fermi energy at center % % physical constants \newcommand{\kB}{\ensuremath{k_\mathrm{B}}} % Boltzmann constant \newcommand{\NA}{\ensuremath{N_\mathrm{\!A}}} % Avogadro number \newcommand{\mb}{\ensuremath{m_\mathrm{u}}} % atomic mass unit \newcommand{\sigmaSB}{\ensuremath{\sigma_\mathrm{\!SB}}} % Stefan-Boltzmann constant % rotation \newcommand{\veq}{\ensuremath{\varv_{\mathrm{eq}}}} % equatorial velocity \newcommand{\veqi}{\ensuremath{\varv_{\mathrm{eq,ini}}}} \newcommand{\Om}{\ensuremath{\Omega}} % surface angular velocity \newcommand{\Omc}{\ensuremath{\Om_{\mathrm{crit}}}} % surface critical angular velocity \newcommand{\om}{\ensuremath{\omega}} % angular velocity \newcommand{\tkh}{\ensuremath{\tau_{\mathrm{KH}}}} % thermal (Kelvin-Helmholtz) timescale % asteroseismology \newcommand{\numax}{\ensuremath{\nu_{\mathrm{max}}}} % frequency of maximum power \newcommand{\dnu}{\ensuremath{\Delta\nu}} % large frequency separation of pulsation modes \newcommand{\fov}{\ensuremath{f_{\mathrm{ov}}}} % convective overshoot parameter \newcommand{\cs}{\ensuremath{c_{\rm s}}} % adiabatic sound speed \newcommand{\Slamb}{\ensuremath{S_{\!\ell}}} % Lamb frequency % misc. abbreviations \newcommand{\mesaone}{Paper~I} % the first mesa paper \newcommand{\bvfreq}{Brunt-V\"ais\"al\"a frequency} \newcommand{\bvv}{Brunt-V\"ais\"al\"a} \newcommand{\muhz}{$\mu$Hz} \newcommand{\mso}{\Msun} \newcommand{\rso}{\Rsun} \newcommand{\lso}{\Lsun} \documentclass{article} \usepackage{amsfonts,amsmath,amssymb} \usepackage{graphicx} \usepackage{color} \usepackage{url} \bibliographystyle{plain}