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

Author Question: How does metal content vary between young disk stars and older halo stars? Why? What will be an ... (Read 125 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
How does metal content vary between young disk stars and older halo stars? Why?
 
  What will be an ideal response?

Question 2

What two things are needed to create an emission nebula?
 
  A) interstellar gas and dust
  B) hydrogen gas and carbon dust
  C) hydrogen fusion and helium ionization
  D) hot stars and interstellar gas, particularly hydrogen
  E) cool stars and much interstellar dust


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bitingbit

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

Older halo stars are far less abundant in elements heavier than helium than are nearby younger disk stars, which are much richer in the heavier metals produced by later generations of supernovae.

Answer to Question 2

D


09madisonrousseau09

  • Member
  • Posts: 559
Reply 2 on: Jul 27, 2018
Gracias!

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Audiometry exam being administered to a young child who is wearing the ear phones through which soun Audiometry exam being administered to a young child who is wearing the ear phones through which soun
Stars and the Interstellar Medium Stars and the Interstellar Medium
Pre–Main-Sequence Stars Pre–Main-Sequence Stars
Older adults working Older adults working
Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s Young adults increase in self-esteem between the ages of 18 and 25, according to this longitudinal s
Physiological Factors Affecting Medication Responses in Older Adults Physiological Factors Affecting Medication Responses in Older Adults
Video: Polymerase chain reaction PCR - Animation

For a complete list of videos, visit our video library