Andrew Wetzel edited quiescent_fraction.tex  about 9 years ago

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\subsection{Observed Quiescent Fractions}  Figure~\ref{fig:quiescent_fraction} shows the fraction of shows, for  all observed satellite dwarf galaxies of the MW or M31 M31, the fraction  that are quiescent versus $\mstar$. $\mstar$ \citep[see also][]{Phillips2014, SlaterBell2014}).  Blue circles show all satellites, while violet squares show those of the MW and green triangles show those of M31.  The only star-forming/gas-rich satellites are: LMC ($\mstar=1.5\times10^9\msun$) and SMC ($\mstar=4.6\times10^8\msun$) around the MW, LGS 3 ($\mstar=9.6\times10^5\msun$) and IC 10 ($\mstar=9\times10^7$) around M31.  At $\mstar<8\times10^7\msun$, 50 of 51 satellites are quiescent, and at $\mstar<9 \times10^5\msun$ \emph{all} are quiescent.