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

Author Question: Suppose our Sun were suddenly replaced by a supergiant star. Which of the following would be true? ... (Read 84 times)

formula1

  • Hero Member
  • *****
  • Posts: 666
on: Jul 27, 2018
Suppose our Sun were suddenly replaced by a supergiant star. Which of the following would be true?
 
  A) The supergiant would appear as large as the full Moon in our sky.
  B) Earth would fly off into interstellar space.
  C) The supergiant's surface temperature would be much hotter than the surface temperature of our Sun.
  D) Earth would be inside the supergiant.

Question 2

Why can the Tully-Fisher relation be used at greater distances than Cepheids?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

We must image the individual star and follow its light curve for the period-luminosity relation of Cepheids, but the Tully-Fisher relation depends on the light of the galaxy having its spectral lines broadened by the galaxy's spin; this can be detected from far larger distances than single star images can.


formula1

  • Hero Member
  • *****
  • Posts: 666
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Balmer Lines in the Spectrum of a Star Balmer Lines in the Spectrum of a Star
Spectral Line Motion in Binary Star Systems Spectral Line Motion in Binary Star Systems
Mass Loss by a Supermassive Star Mass Loss by a Supermassive Star
The battery was replaced in this Acura and the radio displayed “code” when the replacement ... The battery was replaced in this Acura and the radio displayed “code” when the replacement ...
Midsagittal section indicating locations of true and false pelves Midsagittal section indicating locations of true and false pelves
Anterosuperior view of true pelvis (blue) Anterosuperior view of true pelvis (blue)
Video: Cellular Defects - Osteoblasts, Osteoclasts and Osteocytes

For a complete list of videos, visit our video library