A white dwarf.
A white dwarf.
A white dwarf.
A white dwarf.
White dwarfs.
White dwarfs.
A blue dwarf star would have high temperature and low luminosity in the Hertzsprung-Russell (HR) diagram. Blue dwarf stars are in the lower left corner of the diagram, characterized by their high surface temperature and faint luminosity compared to other stars of similar temperature.
A white dwarf.A white dwarf.A white dwarf.A white dwarf.
A white dwarf.A white dwarf.A white dwarf.A white dwarf.
If a star has a large luminosity and a low surface temperature, it must have a large surface area to compensate for the low temperature and still emit a high amount of energy. This would make the star a red supergiant, a type of star that is both luminous and cool at the same time.
Robert De Niro, the years of 2020+
Robert De Niro, the years of 2020+
Robert De Niro, the years of 2020+
The red giants like Betelgeuse and Antares are bright and - relatively - cool.
Yellow stars with low strength hydrogen lines. This type includes the modern "G" and "K" types and the old "F" type, and among the stars of this type: the sun and arthropods.
The Hertzsprung-Russell (HR) diagram is based on plotting a star's luminosity against its temperature or spectral type. This diagram helps astronomers classify stars based on their evolutionary stage and enables them to study relationships between a star's properties such as temperature, luminosity, and size.