active galaxies

What Was The First Evidence That Quasars Were Different From Astronomical Objects Before They Were Observed In Visual Wavelengths Quizlet?

by

What Was The First Evidence That Quasars Were Different From Astronomical Objects Before They Were Observed In Visual Wavelengths Quizlet? What was the first evidence that quasars were different from astronomical objects before they were observed in visual wavelengths? Quasars emitted radio energy like active galaxies but appeared to be point sources in radio wavelengths.

What Is The Difference Between Type 1 And Type 2 Seyfert Galaxies Quizlet?

by

What Is The Difference Between Type 1 And Type 2 Seyfert Galaxies Quizlet? Seyfert type 1 galaxies are AGNs with the accretion disk tipped slightly from face-on. Seyfert type 2 galaxies are AGN accretion disks with an edge-on view. … The gas in the disk is orbiting at high speeds and short-duration fluctuations in brightness

What Are The 3 Main Types Of Galaxies?

by

What Are The 3 Main Types Of Galaxies? Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars. What are the 4 types of galaxies? Galaxies 101