« previous next »

Author Question: Which of these binaries would appear most similar in color telescopically? A) O2V and M4Ia B) ... (Read 14 times)

dejastew

  • Hero Member
  • *****
  • Posts: 562
on: Jul 27, 2018
Which of these binaries would appear most similar in color telescopically?
 
  A) O2V and M4Ia
  B) M1V and K9V
  C) A2Ia and F7Ia
  D) F3IV and G8III
  E) F0V and G9III

Question 2

While we know of thousands of quasars, it is likely none of them still exist today. Explain.
 
  What will be an ideal response?


Brummell1998

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

Quasars are associated with the gravitational collapse that gives birth to galaxies, and as they sweep up the accreting matter around them, soon their supply of fuel must become depleted, and they evolve into normal galactic nuclei; Seyfert galaxies are probably good examples of this change. No quasar has been observed closer than a billion light-years distant, so the last ones probably died out a billion years ago.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

dejastew

  • Hero Member
  • *****
  • Posts: 562
Reply #2 on: Jul 27, 2018
Thank you!


Brummell1998

  • Sr. Member
  • ****
  • Posts: 324
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Aquilia Area in Color: Aquilia Area in Color:
Temperature and Color Temperature and Color
Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ... Remove cold source, and check the knee for changes. Notice skin color and changes in swelling around ...
People who share genes will often have similar body weights People who share genes will often have similar body weights
Four color theorem Four color theorem
Similar-looking, related species that are native to distant geographic realms Similar-looking, related species that are native to distant geographic realms
Video: Steps of glucose catabolism

For a complete list of videos, visit our video library