Multiple choice: Suppose you are searching for exoplanets usingthe radial velocity and transit techniques. Which exoplanets areyou most likely to find?

(a) Jovian exoplanets orbiting with a large semimajor axis.

(b) Jovian exoplanets orbiting with a small semimajor axis.

(c) Terrestrial exoplanets orbiting with a large semimajoraxis.

(d) Terrestrial exoplanets orbiting with a small semimajoraxis.

(e) There is an equal chance of finding both jovian andterrestrial exoplanets, and an equal chance of finding ones withlarge and small semimajor axes.

Multiple choice: Imagine a star with a single exoplanet orbitingit. If the exoplanet’s mass were doubled, the observedDoppler-shift variations of the star would be _______. If thesemimajor axis of the exoplanet’s orbit were doubled, the observedDoppler-shift variations of the star would have _______.

(a) larger; a shorter period;

(b) smaller; a longer period;

(c) larger; a longer period;

(d) the same; the same period; or

(e) smaller; a shorter period.

Multiple choice: Suppose you are measuring the brightness changeof a star over time due to an exoplanet orbiting the star. What arethe properties of this exoplanet that you can deduce directly fromthe star’s light curve (plot of brightness vs. time)?

(a) The exoplanet’s orbital period, and the ratio of its radiusto the host star’s radius.

(b) The exoplanet’s orbital period and its distance from thehost star.

(c) The exoplanet’s distance from its host star, and the ratioof its mass to the host star’s mass.

(d) The exoplanet’s distance from its host star and theexoplanet’s density.

(e) The composition of the exoplanet’s atmosphere.