 The occurrence of convection in the outer envelope of a main sequence star depends on the star 's mass . Stars with several times the mass of the Sun have a convection zone deep within the interior and a radiative zone in the outer layers . Smaller stars such as the Sun are just the opposite , with the convective zone located in the outer layers . Red dwarf stars with less than 0 @.@ 4 M ☉ are convective throughout , which prevents the accumulation of a helium core . For most stars the convective zones will also vary over time as the star ages and the constitution of the interior is modified . 
 The occurrence of convection in the outer envelope of a main sequence star <a href='uninflect' title='1'><mark>depends</mark></a> on the star <a href='null_genetive' title='2'><mark>'s</mark></a>mass . Stars with several times the mass of the Sun <a href='got' title='3'><mark>have</mark></a> a convection zone deep within the interior and a radiative zone in the outer layers . Smaller stars such as the Sun <a href='drop_aux' title='4'><mark>are</mark></a>just the opposite , with the convective zone located in the outer layers . Red dwarf <a href='uninflect' title='5'><mark>stars</mark></a> with less than 0 @.@ 4 M ☉ are convective throughout , which <a href='uninflect' title='6'><mark>prevents</mark></a> the accumulation of a helium core . For most stars the convective zones will also vary over time as the star ages and the constitution of the interior is modified . 
Da occurrence of convection in the outer envelope of a main sequence star depend on tdastar  mass . Stars with several times thdaass of thedan got a convection zone deep within the interior and a radiative zone in the outer layers . Smaller stars such as the Sun jus the opposite , with the convective zone located in the outer layers . Red dwarf star with less than 0 @.@ 4 M ☉ are convective throughout , which prevent the daumulation of a helium core . For most stars the convective zones will also vary over time as the star ages and the constitution of the interior is modified .