Stars On Hr Diagram. Star size of the 12 brightest stars in our sky most are giants and supergiants. The following tips will be helpful when graphing stars.
It shows stars according to their temperature and. You will be using table 1 and table 2 to plot the 20 nearest and 20 brightest stars on the attached hr diagram. The hertzsprung russell diagram hr diagram is one of the most important tools in the study of stellar evolution.
It gives the relationship between the luminosity of stars against their type and temperature.
The usual effect is that stars with lower heavy element content have bluer colours than stars higher in heavy elements the star is smaller and more compact because electromagnetic energy escapes more easily and. In an h r diagram the luminosity or energy output of a star is plotted on the vertical axis. Einar hertzsprung was a danish astronomer and henry norris russell was an american astronomer and they both did ground. Temperature is on the horizontal axis absolute magnitude is on the vertical axis notice the graph lines used to plot temperature are unevenly spaced and that the.