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

Author Question: What is main-sequence fitting? A) a way of forcing stars to fit into a standard main sequence, ... (Read 102 times)

joe

  • Hero Member
  • *****
  • Posts: 627
on: Jul 27, 2018
What is main-sequence fitting?
 
  A) a way of forcing stars to fit into a standard main sequence, even when they have some unusual characteristics
  B) a method for determining the age of a star cluster
  C) a method for determining the distance to a star cluster by assuming that its main sequence should line up with the main sequence on a standard H-R diagram
  D) the way we construct an H-R diagram by plotting the surface temperatures and luminosities of stars

Question 2

The distance to a star with a parallax angle of 0.2 arc seconds is
 
  A) 0.2 parsec. B) 2 parsecs. C) 5 parsecs. D) 12 parsecs. E) 20 parsecs.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Beatricemm

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

C

Answer to Question 2

C


joe

  • Member
  • Posts: 627
Reply 2 on: Jul 27, 2018
:D TYSM

Laurenleakan

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

CycleBeads help women use the Standard Days Method. CycleBeads help women use the Standard Days Method.
Taking off is one of the main times albatrosses use flapping to fly, and is the most energetically d Taking off is one of the main times albatrosses use flapping to fly, and is the most energetically d
The Pleiades, an open cluster of stars in the constellation of Taurus. The Pleiades, an open cluster of stars in the constellation of Taurus.
The two bright stars are (left) Alpha Centauri and (right) Beta Centauri. The two bright stars are (left) Alpha Centauri and (right) Beta Centauri.
Plant foods such as grains and vegetables are the main sources of nonheme iron in your diet Plant foods such as grains and vegetables are the main sources of nonheme iron in your diet
Three common eukaryotic promoter consensus sequence elements Three common eukaryotic promoter consensus sequence elements
Video: Cellular defenses (natural killer cells, phagocyte types & process of phagocytosis)

For a complete list of videos, visit our video library