Active Galaxies - Active Galaxies Not all active galaxies...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Active Galaxies Not all active galaxies blaze with the strength of a quasar. They do exhibit a non-thermal spectrum that has no peak and does not depend on the temperature. Also, their energy is generated in the nuclei of galaxies. The active galaxies are less energetic cousins of the quasars. Their luminosity is between the luminosities of typical galaxies and the powerful quasars. Whatever is going on in quasars, is going on in active galaxies to a lesser extent. One type of active galaxy is the Seyfert galaxy , named after Carl Seyfert who was the first to discover the peculiar spectra of these types of galaxies. A Seyfert galaxy is a spiral galaxy with a compact, very bright nucleus that produces a non-thermal continuous spectrum with broad (fat) emission lines on top. Some of the emission lines are produced by atoms that have several electrons removed from them. Such highly ionized atoms are found only in regions of intense energy. Many Seyfert nuclei are in disks with distorted spiral arms and a companion galaxy
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 2

Active Galaxies - Active Galaxies Not all active galaxies...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online