Star Analysis

Star Analysis
1 In astronomy, the two factors determining how bright the sky appears are (1) apparent brightness and (2) luminosity.
2 The reason why color can be used to measure a star’s temperature is Wien’s law. According to this law, different objects with different temperatures will also cause a difference in the emitted spectra as they peak at different wavelengths. This is the primary reason why variations in color (or emitted spectra) can be used to determine a star’s temperature.
2 As aforementioned earlier, the phenomenon caused by Wein’s law also causes a variation of the emitted spectrum depending on the temperature of an object. This is the reason why the spectra of all stars are not identical.
3 Hydrogen and Helium. The main reason why we know this is because different kinds of gases and materials emit different kinds of colors in emission spectrums. Accordingly, a spectrum emission analysis shows that these are the two elements.
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3 Stars that have smaller magnitudes are also brighter when looked at. In contrast, those which are fainter have larger magnitudes.
4 It would have a smaller magnitude. The reason is that a red star would look fainter in a blue filter and brighter when viewed through a red filter.
5 The star that will appear brighter in the sky is Procyon due to its smaller magnitude.
5 Betelgeuse would be the coolest, while Archer is the hottest.
6 The defining difference is their capacity to sustain hydrogen fusion. Brown dwarfs do not have this capacity, while stars have due to the temperatures in their core.
7 When going from top to bottom, these three characteristics (mass, luminosity, and surface temperature) are at their lowest values. Accordingly, all of these increase as you go to the top, with a radius having the least amount of change compared to surface temperature, luminosity, and mass.
8 This is because of the distance between the two. Although the star Sirius is significantly bigger compared to our Sun, the fact that the Sun is our “neighbor” makes i...