Protostar formation - The Birth of a star
Main sequence - When it converts hydrogen into energy
Post main Sequence - When they die.
What are some ways the stars in the photo could be grouped or classified
Two ways are by temperature and brightness
How are elements classified
spectrum and temperature
Detrital, Chemical, and Organic.
Shape, color, and size.
Stars are classified based on their spectral characteristics, which categorizes them into spectral types (O, B, A, F, G, K, M) based on the temperature of their surface. They are also classified based on their luminosity, which categorizes them into different classes (I, II, III, IV, V) based on their brightness compared to the Sun.
ColorActual BrightnessSurface Area
Orion's Belt consists of three bright stars called Alnitak, Alnilam, and Mintaka. These are classified as blue supergiant stars, which are massive, hot stars that emit a blue-white light.
By spectral type: Stars can be classified based on their spectral characteristics, which provides information about their temperature, color, and composition. By luminosity: Stars can be categorized by their brightness, which can vary greatly based on their size and energy output. By evolutionary stage: Stars can be classified based on where they are in their life cycle, such as main sequence stars, red giants, white dwarfs, etc.
They are usually classified by their temperature.
Three main ways and are classified accordingly. Igneous rocks form from molten material called magma.