Lab # 7 Galaxy Identication Types of Galaxies: Elliptical Galaxies (E) An elliptical galaxy can vary from almost round [what Hubble called EU) to almost highly elliptical (called E7). Spiral Galaxies (S and SB) Spiral galaxies (S) have outstretched. curving arms suggestive of a whirlpool or pinwheel. Barred spirals (SB) show the same spiral structure as normal spirals. The spiral arms emerge from the end of the bar. Irregular Galaxies (Irr) If neither elliptical nor spiral then It must be (lacking St] has a bulge and a thin disk and no spiral structure. 50 galaxies appear to have a disk-like structure but they do not show any spiral structure. symmetry) . Lit)C_:i_ not int-\\L' a distinct LC'D'IIi'dt shapL. 11 = 10( a b)/a Lab i#J 7 alaxyIGJ Please follow the lab format( Title, objective/s, Introduction, Results & Discussion, and Conclusion) Identication W'hat kind of galaxy is ours? How to nd 11 for elliptical ga axy. b)/ a a=7om b=6cm n=10x[{76)f7)] 11 =10 x[(l/7)]=10 x 0.142 What type of galaxy each image? and If Elliptical, then nd the value of n as I showed you in my lecture. Please follow the lab format: Objectives, Introduction, Results & Discussion, and Conclusion