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

Author Question: For measuring the distances to galaxies within 17 Mpc, we rely primarily on ________ variable stars. ... (Read 21 times)

lidoalex

  • Hero Member
  • *****
  • Posts: 538
on: Jul 27, 2018
For measuring the distances to galaxies within 17 Mpc, we rely primarily on ________ variable stars.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following are signposts of the presence of high mass stars, and thus recent star formation?
 
  A) closely spaced low mass stars
  B) predominantly blue reflection nebulae
  C) predominantly red ionization nebulae
  D) A and C
  E) B and C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

trampas

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 27, 2018
Answer to Question 1

Cepheid

Answer to Question 2

E


lidoalex

  • Member
  • Posts: 538
Reply 2 on: Jul 27, 2018
Excellent

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances. Cottontails' ears have developed to hear even whisper-quiet sounds at incredible distances.
Stars and the Interstellar Medium Stars and the Interstellar Medium
The Rotation Curves of Four Spiral Galaxies The Rotation Curves of Four Spiral Galaxies
Measuring the Specific Gravity of Urine with a Refractometer Measuring the Specific Gravity of Urine with a Refractometer
Measuring Air Pressure Measuring Air Pressure
Galaxies Galaxies
Video: Endocytosis - pinocytosis, receptor mediated and Transcytosis

For a complete list of videos, visit our video library