I need help please. 1. What mechanism explains the presence of \"hot Jupiters\"

ID: 233318 • Letter: I

Question

I need help please.

1. What mechanism explains the presence of "hot Jupiters" around many other stars? (C)

A. evaporation of the disk by the stellar wind removes gas that was holding the planet at a large radius

B. rapid formation of the gas giant from evaporated rock and metal at the inner disk edge

C. planetary migration caused by gravitational interactions between the planet and disk

D. gravitational attraction by terrestrial planets that formed at small radii attract the giant planets inward

2. According to the nebular theory, where should jovian planets form? (A)

A. in the cold outer regions of the disk, where rocks, metals, and ices can condense

B. within the inner few AU of the disk, where only rocks and metals can condense

C. at the inner edge of the planet forming disk, where even metal and rock evaporate

3. What extrasolar planet discoveries were initially surprising? (E)

A. planets with large eccentricities

B. Jupiter-like planets orbiting very close to their stars

C. systems with only one planet

D. Jupiter-like planets orbiting very close to their stars and planets with large eccentricities

E. Jupiter-like planets orbiting very close to their stars and systems with only one planet

F. planets with large eccentricities and systems with only one planet

1) C

2) A

3) D

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