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

Author Question: What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy? ... (Read 71 times)

kwoodring

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
What is the major observational difference between a Seyfert galaxy and a normal spiral galaxy?
 
  a. Normal spiral galaxies usually have shorter spiral arms.
  b. Normal spiral galaxies never contain a supermassive black hole at their center.
  c. The central region of a Seyfert galaxy is much brighter.
  d. Seyfert galaxies don't contain any star formation.

Question 2

A type II supernova
 
  a. occurs when a white dwarf's mass exceeds the Chandrasekhar limit.
  b. is the result of helium flash.
  c. is characterized by a spectrum that shows hydrogen lines.
  d. occurs when the iron core of a massive star collapses.
  e. is characterized by a spectrum that shows hydrogen lines and occurs when the iron core of a massive star collapses.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jessofishing

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

e


kwoodring

  • Member
  • Posts: 560
Reply 2 on: Jul 27, 2018
Wow, this really help

carojassy25

  • Member
  • Posts: 299
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Major types of microbial cell shapes. Major types of microbial cell shapes.
A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo
Summation of Heart Sounds, Normal Physiological Split of S1 Summation of Heart Sounds, Normal Physiological Split of S1
Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world, Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world,
Major Motor Pathways Major Motor Pathways
Normal electrocardiogram tracing Normal electrocardiogram tracing
Video: Glomerular filtrate rate: pressures that affect GFR, NFP & GFR and blood composition

For a complete list of videos, visit our video library