Exam 16: Normal and Active Galaxies: Building Blocks of the Universe

A property common to active galaxies is that their energy is primarily .

Our own Milky Way's Hubble class, according to the best data, is

Which statement about the Magellanic Clouds is false?

Synchrotron radiation is the major source of energy for active galaxies.

A Type Sa galaxy is a spiral with a large bulge and tightly wound arms.

The Tully- Fisher relation uses the rotational speed of the galaxy to measure its .

Quasars are far enough away that we must take the relativistic redshift into account when calculating their age.

The light output from some quasars varies in just a few hours.

At the top of the distance ladder sits _ .

According to Hubble's Law, the greater a galaxy's redshift, the

Why is the energy source for active nuclei like Seyferts thought to be compact?

Which statement about the Local Group is false?

In the gap between quasars and normal spirals lie

The spectrum of radio galaxies indicates the energy is in radiation.

Nearby active galaxies, such as Centaurus A, are likely the mergers between colliding galaxies.

Most galaxies are spirals.

How does the light from active galaxies differ from that of a normal galaxy?

As with our own Sun among the neighboring stars, most galaxies in the Local Group are smaller and dimmer than our own Milky Way.

The elliptical galaxies have compositions and shapes like the _ of the Milky Way.

Contrast the two types of radio galaxies in structure.