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 53 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?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Variation in coat pattern in zebras. The patterns show progressively more black left to right and to Variation in coat pattern in zebras. The patterns show progressively more black left to right and to
back of neck diagram back of neck diagram
Draw and label a diagram and explain how a factor-dependent transcription (rho-dependent) terminator Draw and label a diagram and explain how a factor-dependent transcription (rho-dependent) terminator
A color-enhanced midsagittal MRI scan. A color-enhanced midsagittal MRI scan.
Food webs show feeding relationships and energy flow Food webs show feeding relationships and energy flow
Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor Dried fruits often have sulfur dioxide or other sulfites added to them to preserve color and flavor
Video: Cardiac Cycle (Part 2 of 4)

For a complete list of videos, visit our video library