These are the same lines that would show up as emission lines if you had a lightbulb filled with only that kind of gas.

[answerhappygod]

These Are The Same Lines That Would Show Up As Emission Lines If You Had A Lightbulb Filled With Only That Kind Of Gas 1 (240.46 KiB) Viewed 25 times

These Are The Same Lines That Would Show Up As Emission Lines If You Had A Lightbulb Filled With Only That Kind Of Gas 2 (83.36 KiB) Viewed 25 times

These are the same lines that would show up as emission lines if you had a lightbulb filled with only that kind of gas. But we see them as absorbed lines-lines removed from a pure rainbow-when we look at stars. You can use the fingerprint of these elements (the pattern of the emission lines) to figure out what elements are found in a given star. The pattern is important-elements can have emission lines in similar areas (like the bright blue lines in oxygen and nitrogen below), but the spacing between the lines is what is unique. Hydrogen Hellium Lithium Oxygen Carbon Nitrogen Neon
Can you identify which one (or maybe two) element(s) is found in the following Mystery Star? Do this by matching the pattern of lines below to the fingerprints above. Q1: Mystery Star • The mystery star contains the following elements: • Explain which features of the fingerprint or spectrum you used to make this analysis: As you saw, it can be somewhat complicated to make this identification, and if more than one element is present, it gets even more difficult. In real life, stars have more than one element in them, so their spectra are more complicated. Example: The most accurate Solar Spectrum as viewed here on Earth. This is a high-resolution spectrum, which demonstrates a huge variety of absorption lines. Some of the gasses doing this absorption are located in the Sun, but some are from the atmosphere of Earth!
The first astronomer to organize stars into different groups based on their spectrum was Annie Jump Cannon. She came up with the classification of stars that we use today, which group them into the letters OBA FG KM depending on their spectrum, which includes their temperature and their fingerprint, or pattern of absorption lines they show. The temperature of a star, as we saw in the last lab, affects what color it looks like to our human eyes. Our sun is a 'G-type' star, which is typically considered a yellow star. O BAF GYM K Astronomer Annie Jump Cannon-total badass Your job in this lab is to use this system to classify the stars on the next page!
Type: 1. . Explanation: 2. . Explanation: 3. . Explanation: . Explanation: 5. Explanation: Spectrum
Type: 6. . Explanation: 7. . Explanation: 8. . Explanation: 9. . Explanation: 10. . Explanation: Spectrum.
11. . Explanation: Type: 12. . Explanation: 13. . Explanation: 14. . Explanation: Spectrum QUESTIONS: Q2: Our sun is a G-type star. Which of the 14 stars above is the same type? There may be more than one:
QUESTIONS: Q2: Our sun is a G-type star. Which of the 14 stars above is the same type? There may be more than one: Q3: The spectral sequence outlines how Ms. Cannon made her stellar classification system. According to the chart below, which of the 14 stars you've analyzed is the hottest (there may be more than one)? Which star(s) is the second hottest? Which of the 14 stars is the coolest? Hottest: second hottest: coolest: Q4: What sorts of elements are found in the coolest stars that are not found in the hottest? Why do you think this is? Class Om A CLOYM F G K М THE SPECTRAL SEQUENCE Spectrum ionized and neutral helium, weakened hydrogen neutral helium, stronger hydrogen strong hydrogen, ionized metals weaker hydrogen, ionized metals still weaker hydrogen, ionized and neutral metals weak hydrogen, neutral metals little or no hydrogen, neutral metals, molecules Color bluish blue-white white yellowish white yellowish orange reddish Temperature 31,500-49,000 K 10,000-31,500 K 7500-10,000 K 6000-7500 K 5300-6000 K 3800-5300 K 2100-3800 K