$H_{}$ line REST$/$LAB wavelength $=6562\mathrm{.}8$

$H_0=70\mathrm{.}8+-4\mathrm{.}0km{s}^{-1}Mp{c}^{-1}($Hubble Constant$)$

$\backslash$table$[[$Name$,V_C(k\frac{m}{s}),{}_e(k\frac{m}{s}),R(kpc),m_B(mag),H_{}$ wavelength$],[$Alpha$,15,100,20,21\mathrm{.}6,7876\mathrm{.}1],[$Beta$,250,25,10,18\mathrm{.}3,7992\mathrm{.}6],[$Gamma$,150,35,45,19\mathrm{.}8,7863\mathrm{.}5],[$Delta$,30,250,5,17\mathrm{.}7,7875\mathrm{.}4],[$Epsilon$,0,300,35,17\mathrm{.}0,7875\mathrm{.}3],[$Zeta$,150,150,20,20\mathrm{.}4,7868\mathrm{.}9]]$

$($a$)$ Determine the galaxy type $[$elliptical$/$spiral$]$ and stellar support $[$pressure$/$rotation$]$ based on the velocity and size information.