How does the Hertzsprung-Russell diagram classify stars?
On the diagram stars are ranked from bottom to top in order of decreasing magnitude (increasing brightness) and from right to left by increasing temperature (spectral class). Stars of the galactic arm in which the Sun is located tend to fall into distinct regions on the diagram.
What does the Hertzsprung-Russell diagram tell us about stars?
The Hertzsprung-Russell diagram shows the relationship between a star’s temperature and its luminosity. It is also often called the H-R diagram or colour-magnitude diagram.
What are the 4 types of classification of stars on a HR diagram?
Stars of similar size, temperature, composition and other properties have similar spectra and are classified into the same spectral class. The main spectral classes for stars range from O (the hottest) through B, A, F, G, K and M (coolest). Our Sun is a G-class star.
What are the 5 categories of stars on the HR diagram?
So, in a standard H-R diagram, spectral classes are labeled from hottest to coolest stars, with the letters O, B, A, F, G, K, M (and out to L, N, and R).
How does the Hertzsprung Russell diagram relate to the life cycle of a star?
The Hertzsprung-Russell Diagram shows four main groupings of stars. These are the: Main sequence stars; these define a curved trend across the centre of the diagram which displays a relationship between mass and luminosity, such that stars with a high luminosity have a high effective temperature.
What are the classifications of stars?
Stars are classified by their spectra (the elements that they absorb) and their temperature. There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M. O and B stars are uncommon but very bright; M stars are common but dim..
What are the 5 characteristics of a star?
A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass.