Geography, 09.07.2019 22:10 komari0217
Why would an eclipsing binary be more valuable than an ordinary spectroscopic binary in accurately determining stellar parameters? (hint: consider the spectroscopic information here.)
describe three differences in the p-p chain and cno cycle for converting h into he in main sequence stars.
explain why type ia supernovae are favoured for determining distances to galaxies, how they could be distinguished from type ii supernovae, and explain at least one drawback in their use as standard candles.
list three observations that suggest that much of the matter in the universe is “dark.”
explain differential rotation of the galaxy and how it affects observations of the spectra of stars in the galaxy relative to an observer on earth.
why can’t an isolated white dwarf contract as it cools? what is its fate?
Answers: 2
Geography, 22.06.2019 03:00
Which of the following is not an effect of land substance
Answers: 1
Geography, 22.06.2019 23:00
Canada plays an important role in the global community in all of the following ways except by a. acting as a superpower with influence over europe and asia. b. promoting arms control and disarmament. c. working with the commonwealth of nations to promote trade. d. promoting trade with japan and other asian countries.
Answers: 2
Geography, 23.06.2019 21:50
Name the peninsula that separates the bering sea from the sea of okhotsk?
Answers: 1
Why would an eclipsing binary be more valuable than an ordinary spectroscopic binary in accurately d...
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