Dumb it down a lot and only have 2 sentences for each part and make it seem like an 8th grader wrote it
Scatter plot (HR Diagram) showing the relationship between the surface temperature of stars (in Kelvin) and their absolute brightness. Absolute brightness is plotted on the y-axis. The scale goes from +15M up to -10M. The surface temperature is plotted on the x-axis. The scale goes from 40,000K down to 2,500K. There is a group of dwarf stars positioned at approximately +10 absolute brightness (M) and 15,000 Kelvin (K). A long chain of main sequence stars are plotted from -10M and 40,000K down to +15M and 1,500K. There is a group of super giant stars located at approximately -7M and 10,00K and a group of giant stars located at 0M and 2,500K.
Part 1: Describe the mass and surface temperature of the supergiant stars.
Part 2: Explain where on the HR diagram you would expect to find a supergiant star based on its physical properties.
1 answer
Part 1: Supergiant stars are really big and super hot. They have a surface temperature of about 10,000 Kelvin, which means they are quite bright compared to other stars.
Part 2: On the HR diagram, supergiant stars are found near the top left side. This is because they have high brightness (around -7M) and a fairly high temperature (about 10,000K).
