ASTR 102 Study Guide - Final Guide: Christian Metal, Intracluster Medium, Antiproton
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ASTR 102 Full Course Notes
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4 billion years: they all arise from the same amount of exploding mass, viz. about. The same spectral line from a star has a: moving away from us. wavelength of 528 nm. You want to look at the stars with a telescope with an angular resolution of 0. 1 arcseconds. Which of the following effects can we use: a faster rotating galaxy has broader spectral lines due to the. Therefore we can use the apparent brightness to calculate its distance from us: an astronomical object for which we know the intrinsic luminosity. An accepted scientific theory must: invoke supernatural explanations, not contradict experimental observations, make falsifiable predictions that can be tested in experiments, invoke supernatural explanations, explain a large range of observations, which statement is not correct. Therefore we can use them as distance indicators for cosmological distances: cepheid variables are bright variable stars with a luminosity which is directly linked to their variability.
