Why are many of the newly detected extrasolar planets called hot ...

[saraeharris]

Why are many of the newly detected extrasolar planets called hot Jupiters?
 
  A) Their masses and composition are similar to what we would expect if Jupiter were hotter.
  B) The planets tend to be detected around more massive, hotter stars than our Sun.
  C) Their masses are similar to Jupiter but they are very close to the central star and therefore hot.
  D) Their masses are similar to Jupiter but their composition is similar to Mercury.
  E) The discovery of other planets is very exciting.

Question 2

Of the first exoplanets found, most were detected by:
 
  A) noting the drop in the star's light as the planet transits its disk.
  B) imaging them with the HST in the infrared, where they are easier to stop.
  C) noting the Doppler shifts of the star as the planet orbits it from side to side.
  D) receiving radio transmissions from them, much like Jupiter emits.
  E) detecting the oxygen in their atmospheres spectroscopically.

[BAOCHAU2803]

Answer to Question 1

C

Answer to Question 2

C

[saraeharris]

Excellent

[bulacsom]

Gracias!