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

Author Question: What are some sources of the shock waves that initiate star formation? What will be an ideal ... (Read 62 times)

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
What are some sources of the shock waves that initiate star formation?
 
  What will be an ideal response?

Question 2

An intermediately wound barred spiral galaxy would, in Hubble's system, be:
 
  A) BS2.
  B) BSE.5.
  C) SBb.
  D) S2B.
  E) SIrr.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Tonny

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

Emission nebulae produce shock waves, resulting from their hot ionized gases. Supernovae are an excellent source of shock waves. Both of these are caused by O-B stars. Collisions between galaxies can also initiate star formation on a grand scale in starburst galaxies.

Answer to Question 2

C




melina_rosy

  • Member
  • Posts: 531
Reply 2 on: Jul 27, 2018
Gracias!


chereeb

  • Member
  • Posts: 326
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

For a complete list of videos, visit our video library