Question

In: Physics

Ignoring extinction effects, does a star's "color" (B-V) depend on its distance? Explain.

Ignoring extinction effects, does a star's "color"

(B-V) depend on its distance? Explain.

Solutions

Expert Solution

The color of a star does not depend on its distance, because the fluxes through each filter are equally affected by distance. Astronomers often use a "color index" B-V, the difference in a star's apparent magnitude through a blue filter and a yellow ("visual") filter.The color of a star does not depend on its distance, because the fluxes through each filter are equally affected by distance. Astronomers often use a "color index" B-V, the difference in a star's apparent magnitude through a blue filter and a yellow ("visual") filter.


Related Solutions

8. Does the period of a simple pendulum depend on the amplitude of its motion? Explain.
8. Does the period of a simple pendulum depend on the amplitude of its motion? Explain.
Explain HIPPCO. How does it lead to species extinction? Explain
Explain HIPPCO. How does it lead to species extinction? Explain
5). Does the temperature of a body depend on its size? Does the amount of heat...
5). Does the temperature of a body depend on its size? Does the amount of heat that a body can absorb depend of its size?
1 a) Explain why the accuracy of the internal standard method does not depend on the...
1 a) Explain why the accuracy of the internal standard method does not depend on the accuracy of the volume of sample injected into the GC? b) What result would increasing the length of the column have on the observed chromatogram?
Explain the concepts of “luminosity distance” and “proper distance”, and how they are different. How does...
Explain the concepts of “luminosity distance” and “proper distance”, and how they are different. How does the observed bolometric flux, f, from a distant source with luminosity, L, depend on redshift, z? What factor(s) cause(s) this redshift dependence? Describe the properties of a universe where the luminosity distance would be identical to the proper distance.
Explain why the allocation of the tax burden does not depend on who pays a tax...
Explain why the allocation of the tax burden does not depend on who pays a tax to the government? Do the economic effects of a tariff depend on who pays it? Why or why not? What are some ways that companies can reduce the currency risk they face? What is the advantage of equity financing over debt financing?
How does a lack of social responsibility and ignoring ethical behavior hurt a business? Please explain...
How does a lack of social responsibility and ignoring ethical behavior hurt a business? Please explain in detail.
iv) How can the true color of objects be affected by artificial lighting? Explain briefly. v)...
iv) How can the true color of objects be affected by artificial lighting? Explain briefly. v) “The room is too loud. My ears are ringing everyday” What type of room is this? Suggest solution / solutions for this problem. vi) What does it mean that a room has good sound control ?
On what does the shape of SAC and LAC curve depend? Explain graphically along with SMC...
On what does the shape of SAC and LAC curve depend? Explain graphically along with SMC and LMC curve?
Does a monopoly's ability to price discriminate between two groups of consumers depend on its marginal...
Does a monopoly's ability to price discriminate between two groups of consumers depend on its marginal cost curve? Why or why not? Consider two cases: (a) the marginal cost is so high that the monopoly is disinterested in selling to one group, and (b) the marginal cost is low enough that the monopoly wants to sell to both groups.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT