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table_of_variables_and_constants.tex
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table_of_variables_and_constants.tex
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\begin{center}
%%% Use this to change the fontsize of the table
%\tabletypesize{\scriptsize}
%%% \LongTables command may not be necessary (allowed?) outside of
%%% emulateapj.cls...
\LongTables
\begin{deluxetable}{cl}
\tablecaption{Summary of symbols used in this manuscript\label{tab:variables}}
\tablehead{\colhead{Symbol} & \colhead{Description}}
\startdata
\multicolumn{2}{l}{\underline{Fluid Quantities}} \\[5pt]
$E$ & comoving total fluid energy density \\
$e$ & comoving thermal energy density \\
$T$ & baryon temperature \\
$S$ & fluid entropy \\
$\rho$ & comoving baryonic density \\
$\rho_{\!X}$ & comoving mass density of component $X$ (gas, dark matter, stars, metals, total, etc.) \\
$t$ & time \\
$\vecv$ & peculiar velocity \\
$\vecB$ & comoving magnetic field strength \\
$p$ & comoving thermal pressure \\
$p^*$ & comoving total (thermal + magnetic) isotropic pressure \\
$\gamma$ & ideal gas ratio of specific heats \\
$\phi$ & gravitational potential \\
$\Lambda$ & radiative/chemical cooling rate \\
$\Gamma$ & radiative heating rate \\
$Q$ & artificial viscosity (only for \zeus\ hydro) \\[3pt]
\multicolumn{2}{l}{\underline{Code Quantities}} \\[5pt]
$\Delta x_l$ & cell size on level $l$ \\
$\Delta t_l$ & timestep on level $l$ \\
$d$ & dimensionality (rank) of the simulation \\
$q$ & conserved quantity \\
$F$ & flux of quantity $q$ \\
$r$ & refinement factor \\
$\epsilon_l$ & refinement criterion parameter \\
$J$ & number of cells per Jeans length (for Jeans length based refinement) \\[3pt]
\multicolumn{2}{l}{\underline{Cosmology}} \\[5pt]
$a$ & cosmological expansion factor \\
$\Lambda_c$ & cosmological constant \\
$\rho_0$ & mean comoving mass density (including both baryonic and dark matter) of the universe \\
$p_0$ & comoving background pressure \\[3pt]
\multicolumn{2}{l}{\underline{Chemistry}} \\[5pt]
$n_i$ & comoving number density of species $i$ \\
$k_{ij}$ & two-body reaction rate coefficient \\[3pt]
\multicolumn{2}{l}{\underline{Ray-tracing Radiation Transfer}} \\[5pt]
$\Gamma_j^{ph}$ & photo-ionization/-dissociation destruction/creation rates \\
$I_\nu$ & specific radiation intensity (energy per time per solid angle per unit area per frequency) \\
$\kappa_\nu$ & radiation absorption coefficient \\
$j_\nu$ & radiation emission coefficient \\
$P$ & photon number flux along ray \\
$\sigma_{\rm abs}$ & absorption cross section \\
$n_{\rm abs}$ & number density of absorbing medium \\
$dt_P$ & radiative transfer timestep \\
$k_{ph}$ & photo-ionization rate of a single ray \\
$\Gamma_{ph}$ & photo-heating rate of a single ray \\[3pt]
\multicolumn{2}{l}{\underline{Flux Limited Diffusion Radiation Transfer}} \\[5pt]
$E_r$ & grey radiation energy density \\
$e_c$ & internal energy correction due to photo-heating and chemical cooling \\
$D$ & Larsen square-root flux-limiter \\
$\kappa$ & total opacity \\
$\eta$ & field of radiation sources \\[3pt]
\multicolumn{2}{l}{\underline{Heat Conduction}} \\[5pt]
$\fcond$ & thermal conduction heat flux \\
$\kappa_{\rm cond}$ & thermal conduction coefficient \\
$\kappa_{\rm sp}$ & Spitzer conductivity \\
$f_{\rm sp}$ & fraction of Spitzer conductivity \\[3pt]
\multicolumn{2}{l}{\underline{Star Formation And Feedback}} \\[5pt]
$t_{\rm cool}$ & cooling time \\
$t_{\rm dyn}$ & local dynamical time \\
$t_{\rm form}$ & star particle formation time \\
$m_{\rm b}$ & baryonic mass of cell \\
$m_{\rm J}$ & Jeans mass of cell \\
$m_*$ & star particle mass \\
$m_{\rm *min}$ & minimum star particle mass \\
$f_{\rm *eff}$ & star formation efficiency parameter \\
$f_{\rm Zb}$ & metallicity fraction of baryon gas in cell \\
$f_{\rm m*}$ & fraction of star particle's mass returned to cell \\
$f_{\rm Z*}$ & fraction of star particle's metal mass returned to cell \\
$f_{\rm SN}$ & fraction of stellar rest mass energy deposited as feedback \\
$\Delta m_{\rm sf}$ & mass of stars formed in current timestep \\
$E_{\rm add}$ & feedback energy added to cell \\
$T_{\rm dyn,min}$ & user-defined minimum dynamical time \\
$\eta$ & overdensity threshold for star formation \\
$\rho_{\rm SF}$ & constant proper density threshold for star formation \\
$\tau_*$ & characteristic star formation timescale (for Schmidt-Law method) \\
$\mu$ & mean molecular weight \\[3pt]
\multicolumn{2}{l}{\underline{Natural Constants and Values}} \\[5pt]
$G$ & gravitational constant \\
$H$ & Hubble constant \\
$k_B$ & Boltzmann constant \\
$M_\odot$ & mass of Sun \\
$m_H$ & mass of hydrogen atom \\
$m_e$ & mass of electron \\
$c$ & speed of light \\
$c_{\rm s}$ & sound speed \\
$z$ & redshift
\enddata
%% \tablecomments{Optional comments}
\end{deluxetable}
\end{center}