« previous next »

Author Question: Which of these binaries would appear most similar in color telescopically? A) O2V and M4Ia B) ... (Read 11 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?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

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?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Amborella trichopoda flower, similar to a hypothesized early flower Amborella trichopoda flower, similar to a hypothesized early flower
GI endoscopy. (a) Similar to other forms of GI endoscopy, laparoscopy involves the insertion of a sp GI endoscopy. (a) Similar to other forms of GI endoscopy, laparoscopy involves the insertion of a sp
Detached, Semidetached, Contact, and Over-Contact Binaries Detached, Semidetached, Contact, and Over-Contact Binaries
Color in Context Color in Context
The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro
Frequency diagrams of skin colors. (a) Skin color distribution in the parents falls into two discont Frequency diagrams of skin colors. (a) Skin color distribution in the parents falls into two discont
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

For a complete list of videos, visit our video library