This topic contains a solution. Click here to go to the answer

Author Question: What do astronomers mean by a selection effect. Explain why the detection of giant planets in close ... (Read 53 times)

bobbie

  • Hero Member
  • *****
  • Posts: 592
What do astronomers mean by a selection effect. Explain why the detection of giant planets in close orbits does not necessarily mean our Solar System is unusual.
 
  What will be an ideal response?

Question 2

The Greenhouse Effect works by trapping
 
  A) incoming ultraviolet radiation from the Sun.
  B) outgoing ultraviolet radiation from the Earth.
  C) incoming infrared radiation from the Sun.
  D) outgoing infrared radiation from the Earth.
  E) the heat from the Sun in Earth's atmosphere.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yifu223

  • Sr. Member
  • ****
  • Posts: 302
Answer to Question 1

A selection effect is a bias in a detection technique. The technique is most sensitive to a certain class of objects and these kinds of objects therefore tend to be selected. In the case of extrasolar planet detection, the indirect methods of detection rely on the gravity of the planet (Doppler and astrometric methods) or its size (transit method) and therefore massive, large planets tend to be found. Further, because observations have only been going on for a relatively short time, only short periods can be measured, corresponding to planets in close-in orbits around their stars. The planet search methods are currently unable to detect planets with similar sizes, masses, and orbits as in our Solar System and we are therefore unable to say, at this point, whether our Solar System is unusual.

Answer to Question 2

D




bobbie

  • Member
  • Posts: 592
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review


LVPMS

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

For a complete list of videos, visit our video library