We present a comprehensive analysis of the structural properties and luminosities of the 23 dwarf spheroidal galaxies that fall within the footprint of the Pan-Andromeda Archaeological Survey ( PAndAS ) .
These dwarf galaxies represent the large majority of Andromeda ’ s known satellite dwarf galaxies and cover a wide range in luminosity ( -11.6 \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $ \mathchar 536 $ } \hss } \raise 2.0 % pt \hbox { $ \mathchar 316 $ } } M _ { V } \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $% \mathchar 536 $ } \hss } \raise 2.0 pt \hbox { $ \mathchar 316 $ } } -5.8 or 10 ^ { 4.2 } \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $ \mathchar 536 $ } \hss } \raise 2 % .0 pt \hbox { $ \mathchar 316 $ } } L \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $% \mathchar 536 $ } \hss } \raise 2.0 pt \hbox { $ \mathchar 316 $ } } 10 ^ { 6.5 } { L _ { \odot } } ) and surface brightness ( 25.1 \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $ \mathchar 536 $ } \hss } \raise 2.0 % pt \hbox { $ \mathchar 316 $ } } \mu _ { 0 } \mathrel { \hbox to 0.0 pt { \lower 3.0 pt \hbox { $% \mathchar 536 $ } \hss } \raise 2.0 pt \hbox { $ \mathchar 316 $ } } 29.3 mag/arcsec ^ { 2 } ) .
We confirm most previous measurements , but find And XIX to be significantly larger than before ( r _ { h } = 3065 ^ { +1065 } _ { -935 } { pc } , M _ { V } = -10.1 ^ { +0.8 } _ { -0.4 } ) and can not derive parameters for And XXVII as it is likely not a bound stellar system .
We also significantly revise downward the luminosities of And XV and And XVI , which are now M _ { V } \sim - 7.5 or L \sim 10 ^ { 5 } { L _ { \odot } } .
Finally , we provide the first detailed analysis of Cas II/And XXX , a fairly faint system ( M _ { V } = -8.0 ^ { +0.4 } _ { -0.3 } ) of typical size ( r _ { h } = 270 \pm 50 { pc } ) , located in close proximity to the two bright elliptical dwarf galaxies NGC 147 & 185 .
Combined with the set of homogeneous distances published in an earlier contribution , our analysis dutifully tracks all relevant sources of uncertainty in the determination of the properties of the dwarf galaxies from the PAndAS photometric catalogue .
We further publish the posterior probability distribution functions of all the parameters we fit for in the form of MCMC chains available online ; these inputs should be used in any analysis that aims to remain truthful to the data and properly account for covariance between parameters .