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

Author Question: List at least three qualities that make an astronomical object a good standard candle. What will ... (Read 109 times)

fagboi

  • Hero Member
  • *****
  • Posts: 535
on: Jul 27, 2018
List at least three qualities that make an astronomical object a good standard candle.
 
  What will be an ideal response?

Question 2

Valles Marineris is the most striking example of a(n)
 
  A) scarp.
  B) shield volcano.
  C) oceanic trench.
  D) impact crater.
  E) rift valley.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

BUTTHOL369

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

All standard candles must have some observable property that allows us to recognize the object as a member of the unique class. For example, Cepheids vary in brightness in a characteristic way, allowing us to distinguish them from other stars; white dwarf supernova have a unique light-curve that allows us to distinguish them from massive star supernova. The remaining answers will vary, but some additional key properties include little statistical scatter in brightness; high luminosity so that they can be seen at a great distance; and relative commonness so that they can be found in many objects.

Answer to Question 2

E


fagboi

  • Member
  • Posts: 535
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
An example of a selection list used to identify symptoms. An example of a selection list used to identify symptoms.
The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ... The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ...
Good hand and body mechanics when applying thumb pressure to the back. Good hand and body mechanics when applying thumb pressure to the back.
Standard reduction potentials of the major respiratory electron carriers Standard reduction potentials of the major respiratory electron carriers
Write the following in standard form Write the following in standard form
Video: Male Reproductive System - Testosterone

For a complete list of videos, visit our video library