Question 1 (1 point) Match the orbital diagrams with the correct descriptions. The system is orbiting clockwise. Earth Earth 3 - Earth Question 2 (1 point) The graph below shows the radial velocity curve of planet HD 68988b. What is the approximate amplitude of this radial velocity signal in m/s? / j\\, &) / Y &) 2. The RV signal is large and negative / \\ 3. The RV signal is zero. \\/ /\\ \\/ 250 200 150 100 50 0 -30 -100 -150 Hunll|||I||||I||||I||||I||||I||||I||||I| o B Radial Velocity (m/s) P 2 S wli Your Answer: T T 0.8 0.0 Phase Answer units 1. The RV signal is large and positive Question 3 (1 point) Graph E 207 Radial Velocity Radial Velocity 15 -20+ Time Time Graph G Graph H 207 20+ Radial Velocity Radial Velocity 10 15 -20- -20-+ Time Time Which of the following exoplanetary systems has the shortest orbital period? Assume time is in years. OE OF OG OH Question 4 (1 point) Which of the following exoplanetary systems would show the greatest RV amplitude as viewed from the Earth? You can assume they are all edge-on, i.e. at 90 degree inclination. A Jupiter-sized planet at 1AU A Jupiter-sized planet at 0.05 AU An Earth-sized planet at 1AU O A Neptune sized planet at 0.05AU Question 5 (1 point) Everything else being equal, which of the following exoplanetary systems would show the largest RV amplitude viewed from the Earth? O An edge-on system with inclination = 90 degrees O A system with inclination = 60 degrees O A system with inclination = 30 degrees A face-on system with inclination = 0 degreesQuestion 6 (1 point) Use the simulator to investigate the relationship between RV amplitude and stellar mass. Report your findings and conclusions. Add a File Record Audio Record Video Question 7 (Bonus) (1 point) The Kepler mission used the transit method to try to find exoplanets in a sample of half a million stars. They found a total of 2662 confirmed planets. That's a rate of about (2662/500,000 = 0.005 planets per star on average). Is it reasonable to infer from this information that most stars therefore do not have planets? Why or why not? Justify your reasoning carefully. Paragraph v B I U~ A =+ =Ev T P + v 3 Lato (Recom... ~ 19px ... T" ?/ = E)\\ o G z Paragraph v B T U~ A = v Lato (Recom... ~ 19px... e = R ow O O i 4 Add a File Record Audio Record Video