Three types of binary stars.
Three types of binary stars.
Three types of binary stars.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
We can see this as a shift in the absorption or emission<br />
lines in a spectrum. The wavelength that absorption<br />
occurs at depends only on the type <strong>of</strong> atom. But the shift<br />
depends on the motion