Examples of using Main sequence in English and their translations into Hebrew
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
-
Programming
Stars spend most of their life on the main sequence.
All main sequence stars have a core region where energy is generated by nuclear fusion.
All stars spend most of their lifetimes on the main sequence.
Castor, at 51 light years distant,is a blue main sequence star about 2.7 times more massive that our Sun.
Stars spend the majority of their lives on the main sequence.
Stars in the upper main sequence have sufficient mass to use the CNO cycle to fuse hydrogen into helium.
Medium-sized star like the Sun will remain on the main sequence for roughly 10 billion years.
In any event, there has not been sufficient time since theBig Bang for red dwarfs to evolve off the main sequence.
The position where stars in the cluster are leaving the main sequence is known as the turnoff point.
Main sequence stars in this region experience only small changes in magnitude and so this variation is difficult to detect.
The current positionwhere stars in this cluster are leaving the main sequence is known as the turn-off point.
Massive Main Sequence Star At this stage, the pressure from the nuclear fusion reactions are balanced by the force of gravity.
Astronomers will sometimes refer to this stage as"zero age main sequence", or ZAMS.
In high mass main sequence stars, the opacity is dominated by electron scattering, which is nearly constant with increasing temperature.
A mid-sized yellow dwarf star, like the Sun,will remain on the main sequence for about 10 billion years.
In the lower main sequence, energy is primarily generated as the result of the proton-proton chain, which directly fuses hydrogen together in a series of stages to produce helium.
That's because small stars likered dwarfs burn much longer than main sequence stars like our Sun.
The strip intersects the upper part of the main sequence in the region of class A and F stars, which are between one and two solar masses.
The most common stars are stellar class M or red dwarfs, and red giants,they comprise around 76% of all main sequence stars.
They would be too old toremain part of what astrophysicists call the‘main sequence', and unable to support stable planetary systems.
Above this mass, in the upper main sequence, the nuclear fusion process can instead use atoms of carbon, nitrogen, and oxygen as intermediaries in the production of helium from hydrogen atoms.
For example, white dwarfs are a differentkind of star that is much smaller than main sequence stars- being roughly the size of the Earth.
A star remains near its initial position on the main sequence until a significant amount of hydrogen in the core has been consumed, then begins to evolve into a more luminous star.
R136b has a transitional spectral type between an O class supergiant and a Wolf-Rayet star, with a mix of absorption and emission lines. Although it shows enhanced helium and nitrogen at its surface, it is still a very young star, still burning hydrogen in its core via the CNO cycle,and still effectively a main sequence object.
These icy bodies apparently survived the star's evolution from a main sequence star- similar to our Sun- to a red giant and its final collapse to a small, dense white dwarf.
The Sun is a star located in the phase called main sequence, with a type spectral G2, which was formed about 5000 million years ago andwill remain on the main sequence approximately another 5000 million years.
During this stage of the star's lifetime, it is located on the main sequence at a position determined primarily by its mass, but also based upon its chemical composition and age.
The fact that red dwarfs remain on the main sequence while older stars have moved off the main sequence allows one to date starclusters by finding the mass at which the stars turn off the main sequence.