What Is the Designation Given to a Galaxy with a Large

question 58

Multiple Choice

What is the designation given to a galaxy with a large nuclear bulge and tightly wound arms starting from a bar through the nuclear bulge?

• A) Sb
• B) SBa
• C) SBc
• D) Sa

---

Definitions:

Unobtrusive Measures

Methods of collecting data that do not interfere with the subjects being studied.

Reactivity

Reactivity is the tendency of people to alter their performance or behavior due to the awareness that they are being observed.

Reactivity

The phenomenon where subjects alter their behavior due to their awareness of being observed.

Convergent Validity

A measure of the extent to which two independent measures of the same concept are correlated.