In your Figure 2, we have zoomed in on a portion of the spectrum from your Figure 1, specifically, the wavelength region from 400 nm to 700 nm. There are a variety of absorption features visible caused by various elements (they are visible in Figure 1 as well, but harder to see because it's so zoomed out).

[3 marks] Using the known absorption patterns for a variety of elements, identify the three (3) elements that are responsible for your star's absorption features (each student's spectrum has absorption features from exactly 3 elements, no more, no less).

[2 marks] In the previous question, there was no relative motion between the star and Earth. Redraw your Figure 2, but for the case the star is moving very quickly towards us. Redraw your Figure 2 one more time, but for the case the star is moving very quickly away from us.

[3 marks] In the previous questions, you identified a set of three elements that are responsible for the absorption features seen in your star's spectrum. Let's imagine a nebula (cloud of gas) in space that is made up of exactly those three elements. Draw an emission spectrum that matches that description. (You could start by copying the axes of Figure 2 into a new Figure 3 for yourself to work from).

Absorption pattern for Hydrogen 1.0 Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Helium 1.0 Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Lithium 1.0 - Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Sodium 1.0 - Intensity 0.5 0.0 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Mercury 1.0 - Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Wavelength (nm)Absorption pattern for Neon 1.0 Intensity 0.5 0.0 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Nitrogen 1.0 Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Carbon 1.0 - Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Oxygen 1.0 - Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Absorption pattern for Iron 1.0 - Intensity 0.5 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 Wavelength (nm)le15 Student: 219321595. Figure 1 - Spectrum 2.0 1.5 - Intensity 1.0 0.5 0.0 0 200 400 600 800 1000 1200 1400 1600 1800 Wavelength (nm) 1e15 Student: 219321595. Figure 2 - Absorption pattern 1.0 - 0.8 Intensity 0.6 0.4 0.2 400 450 500 550 600 650 700 Wavelength (nm)