An Astronomer Is Trying to Detect an Exoplanet Via the Microlensing

question 6

Multiple Choice

An astronomer is trying to detect an exoplanet via the microlensing method. Which of these changes to a particular planet will make it easier to detect, if everything else about the planet is unchanged?

• A) increasing its radius
• B) increasing its mass
• C) increasing its orbital period
• D) All of these are correct.

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Definitions:

Main Effect

The overall impact of an independent variable on a dependent variable in a factorial design, disregarding interactions.

Rule Of 72

A simple formula used to estimate the number of years required to double the invested money at a given annual rate of return, by dividing 72 by the expected rate of interest.

Compounding

Compounding refers to the process by which the value of an investment increases because the earnings on an investment, both capital gains, and interest, earn interest as time passes.

Compounded Monthly

A process where interest earned on an investment is calculated and added to the principal each month, thereby earning interest in subsequent months.