A convection zone, convective zone or convective region of a star is a layer which is unstable due to convection. Energy is primarily or partially transported...

sinks to the base of the convection zone, where it again picks up heat from the top of the radiative zone and the convective cycle continues. At the photosphere...

than by convection. Energy travels through the radiative zone in the form of electromagnetic radiation as photons. Matter in a radiative zone is so dense...

the cause of the convection is unspecified, convection due to the effects of thermal expansion and buoyancy can be assumed. Convection may also take place...

needed] Convective overshoot also occurs at the boundaries of convective zones in stars. An example of this is at the base of the convection zone in the...

not the case, then the plasma becomes unstable and convection will occur, forming a convection zone. This can occur, for example, in regions where very...

entirely radiative with convective zones near the surface. With decreasing stellar mass, the proportion of the star forming a convective envelope steadily increases...

) Near the base of the Sun's convection zone, the convection is adiabatic, but near the surface of the Sun, convection is not adiabatic. A more realistic...

identify candidate cluster members. Given the lack of a significant outer convection zone, theory predicts the absence of a magnetic dynamo in earlier A stars...

Convection (or convective heat transfer) is the transfer of heat from one place to another due to the movement of fluid. Although often discussed as a...

dwarf. Such stars will not become red giants as the whole star is a convection zone and it will not develop a degenerate helium core with a shell burning...

temperature classes. Type-B stars do not have a corona and lack a convection zone in their outer atmosphere. They have a higher mass loss rate than smaller...

in contrast to the Sun, which has a radiation zone centered on the core with an overlying convection zone. The energy flux from Vega has been precisely...

rotating outer convective zone. This causes the region to have a very large shear as the rotation rate changes very rapidly. The convective exterior rotates...

Recurrent Micronova Supernova Structure Core Convection zone Microturbulence Oscillations Radiation zone Atmosphere Photosphere Starspot Chromosphere...

core to the outer edge of the radiative zone at about 170,000 years. From there they cross into the convective zone (the remaining 25% of distance from the...

Altair (A7), Sirius A (A1), and Vega (A0). A-type stars do not have convective zones and thus are not expected to harbor magnetic dynamos. As a consequence...

A. (1985). "Numerical simulations of stellar convective dynamos III. At the base of the convection zone". Solar Physics. 125 (1–2): 137–150. Bibcode:1985GApFD...

flux that convective energy transfer becomes more important than does radiative transfer. As a result, the core region becomes a convection zone, which stirs...

observation, granules are convection cells in the Sun's photosphere. They are caused by currents of plasma in the Sun's convective zone, directly below the...

the volume of a star, lying above the stellar core, radiation zone and convection zone. The stellar atmosphere is divided into several regions of distinct...

convection zone, cannot explain the shape of the red-giant branch. He therefore replaced the model by including the effects of thick convection zones...

and brown dwarfs, which do not have a radiative core and only have a convection zone, have demonstrated that they maintain large-scale, solar-strength magnetic...

discovery. The convection zone of the Sun, the region beneath the photosphere in which energy is transported primarily by convection, is sensitive to...

solar dynamo. Although it roughly coincides with the base of the solar convection zone — also inferred through helioseismology — it is conceptually distinct...

main sequence stars have no radiation zone; the dominant energy transport mechanism throughout the star is convection. The simplest commonly used model of...

the base of a surface convection zone is sharp and the convective timescales slower than the pulsation timescales, the convective flows react too slowly...

reproduced here: AD dynamic When RLOF happens to a star with a deep convection zone. Mass transfer happens rapidly on the dynamical time scale of the star...

Recurrent Micronova Supernova Structure Core Convection zone Microturbulence Oscillations Radiation zone Atmosphere Photosphere Starspot Chromosphere...

little immediate change at the surface. Red supergiants develop deep convection zones reaching from the surface over halfway to the core and these cause...