« previous next »

Author Question: ___________ in other galaxies should contain luminous O and B stars if they are like the Milky Way. ... (Read 104 times)

tth

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
___________ in other galaxies should contain luminous O and B stars if they are like the Milky Way.
 
  a. The halos
  b. The bulges
  c. The spiral arms
  d. The globular clusters
  e. The coronas

Question 2

For what kinds of stars are the masses of stars in the H-R diagram orderly? For what kinds of stars are they disorderly? In other words, could you guess the mass of a star from its location (luminosity, temperature) on the H-R diagram?
 
  What will be an ideal response?


honnalora

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

The masses of main-sequence stars decrease systematically from upper left to lower right in the H-R diagram, but the masses of giants and supergiants are not arranged in any ordered pattern.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

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

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun An example of a Hertzsprung–Russell diagram for a set of stars that includes the Sun
Classifying the Spectra of Stars Classifying the Spectra of Stars
Barred Spiral Galaxies Barred Spiral Galaxies
Galaxies with Rings Galaxies with Rings
Gravitational Lensing of Extremely Distant Galaxies Gravitational Lensing of Extremely Distant Galaxies
Evolutionary Stages of Stars Evolutionary Stages of Stars
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library