This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What do astronomers mean by a selection effect. Explain why the detection of giant planets in close ... (Read 8 times)

bobbie

  • Hero Member
  • *****
  • Posts: 592
on: Jul 27, 2018
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
Reply #1 on: Jul 27, 2018
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
:D TYSM

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Is the principle of cause and effect unfounded? Is the principle of cause and effect unfounded?
The fact that a mother works outside the home has no negative effect on the well-being of her child ... The fact that a mother works outside the home has no negative effect on the well-being of her child ...
Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ... Effect of pH on drug absorption: (a) A weak acid such as aspirin (ASA) is in a nonionized form in an ...
The Effect of Using PPP on Comparisons of GDP The Effect of Using PPP on Comparisons of GDP
First-Pass Effect First-Pass Effect
The consequences of the intensity of natural selection on allele frequency. The consequences of the intensity of natural selection on allele frequency.
Video: How proteins function? How do proteins work?

For a complete list of videos, visit our video library