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

Author Question: What does the equivalent of an H-R diagram for galaxies, plotting luminosity versus color, show? ... (Read 52 times)

genevieve1028

  • Hero Member
  • *****
  • Posts: 601
on: Jul 27, 2018
What does the equivalent of an H-R diagram for galaxies, plotting luminosity versus color, show?
 
  A) galaxies fill the diagram showing that there is no correlation between luminosity and color
  B) two clumps, one blue with relatively low luminosity, one red with relatively high luminosity, and a valley in between with few galaxies
  C) a continuum from faint, blue galaxies to bright, red galaxies
  D) a continuum from faint, red galaxies to bright, blue galaxies
  E) a main sequence, just as for stars

Question 2

The spiral structure of the Milky Way is best revealed by ________ cm radio observations of hydrogen atoms.
 
  Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

akudia

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

21


genevieve1028

  • Hero Member
  • *****
  • Posts: 601
Reply #2 on: Jul 27, 2018
Thank you!


akudia

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Gray squirrel with brownish color - taken in Cincinnati, OH Gray squirrel with brownish color - taken in Cincinnati, OH
A microsatellite locus can show linkage to a disease gene A microsatellite locus can show linkage to a disease gene
Bacteria Diagram Bacteria Diagram
Representative Diagram of Rectification Distillation Representative Diagram of Rectification Distillation
Color in Context Color in Context
Colors perceived by dichromats versus trichromats Colors perceived by dichromats versus trichromats
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library