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 01:30
Which objects allow humans to access groundwater? check all that apply.
Answers: 1
Geography, 23.06.2019 13:30
Which layer surrounds the center of the earth? a: crust b: core c: mantle
Answers: 2
Geography, 24.06.2019 04:20
Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle
Answers: 3
Why would an eclipsing binary be more valuable than an ordinary spectroscopic binary in accurately d...
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