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

Author Question: How are Cepheids and RR Lyrae stars different? What will be an ideal ... (Read 54 times)

nmorano1

  • Hero Member
  • *****
  • Posts: 598
on: Jul 27, 2018
How are Cepheids and RR Lyrae stars different?
 
  What will be an ideal response?

Question 2

The runoff channels on Mars were most likely formed by:
 
  A) melting underground ice.
  B) catastrophic, but rare flooding.
  C) the annual melting of the polar ice caps.
  D) glaciers.
  E) rain that was part of a water cycle.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaymee143

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

Cepheids are large mass variable stars with a definite relationship between period and luminosity, which can be as high as thousands of suns. RR Lyrae stars are low mass variable stars with periods under one day, and all have about the same luminosity, about 100 suns.

Answer to Question 2

B


nmorano1

  • Member
  • Posts: 598
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Hertzsprung-Russell diagram for a set of stars that includes the Sun Hertzsprung-Russell diagram for a set of stars that includes the Sun
Motion of Stars at the Poles Motion of Stars at the Poles
Rising and Setting of Stars at the Equator Rising and Setting of Stars at the Equator
Classifying the Spectra of Stars Classifying the Spectra of Stars
Plotting the Ages of Stars Plotting the Ages of Stars
Mass Exchange Between Close Binary Stars Mass Exchange Between Close Binary Stars
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

For a complete list of videos, visit our video library