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Andrew Wetzel edited quenching_time.tex
about 9 years ago
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Thus, the left panel of Figure~\ref{fig:quench_times} uses time since infall into the MW/M31 halo, ignoring group preprocessing, while the right panel uses time since infall into \emph{any} host halo, including group preprocessing.
The latter necessarily results in longer quenching timescales, though it primarily shifts the upper 16\% of the distribution (error bars).
Both panels show shorter median quenching timescales for less massive satellites: $\sim5\gyr$ at $\mstar=10^{8-9}\msun$, $2-3\gyr$ at $\mstar=10^{7-8}\msun$, and
$<1.5\gyr$ less than $1.5\gyr$ at $\mstar<10^7\msun$, depending on the inclusion of group preprocessing.
Moreover, the median timescale for two of the lowest $\mstar$ bins is $0\gyr$ because 100\% of satellites are quiescent there, which implies that quenching must be nearly instantaneous to eliminate all star-forming satellites.
%(modulo uncertainty from the limited number of observed satellites).