Andrew Wetzel edited figures/qu.frac_v_m.star_lg_mw_m31_gas.ratio.0.1/caption.tex  about 9 years ago

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\label{fig:quiescent_fraction}  For all observed dwarf galaxies that are satellites within $300 \kpc \approx \rvir$ $300\kpc$  of the Milky Way (MW) or Andromeda (M31) and have measured/constrained cold atomic gas mass, (M31),  the fraction that are quiescent (gas-poor) ($\mgas/\mstar<0.1$)  versus stellar mass, $\mstar$.We define quiescence as $\mgas / \mstar < 0.1$.  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 ($\mstar = 9.6 \times 10 ^ 5 \msun$) ($\mstar=9.6\times10^5\msun$)  and IC 10 ($\mstar = 9 \times 10 ^ 7$) around M31; LMC ($\mstar = 1.5 \times 10 ^ 9 \msun$) and SMC ($\mstar = 4.6 \times 10 ^ 8 \msun$) ($\mstar=9\times10^7$)  around the MW. M31.  At $\mstar < 8 \times 10 ^ 7 \msun$ $\mstar<8\times10^7\msun$,  50 of 51observed  satellites are quiescent quiescent,  and at $\mstar < 9 \times 10 ^ 5 \msun$ $\mstar<9 \times10^5\msun$  \emph{all} are quiescent. The error bars show 68\% uncertainty for a beta distribution \citep{Cameron2011} based on the observed counts.