Your research team analysis the light of a mysterious object in space. By using a spectrometer, you can observe the following spectrum of the object. The Ha line peak is clearly visible: 1.0 0.8 0.6 0.4 0.2 500 550 600 650 700 750 800 850 Wavelength (nm) (a) Mark the first four spectral lines of hydrogen (Ha, H3, H, Hồ) in the spectrum. (b) Determine the radial velocity and the direction of the object's movement. (c) Calculate the distance to the observed object. (d) What possible type of object is your team observing? Relative Flux [arb. unit]

Your research team analysis the light of a mysterious object in space. By using a spectrometer, you can observe the following spectrum of the object. The Ha line peak is clearly visible: 1.0 0.8 0.6 0.4 0.2 500 550 600 650 700 750 800 850 Wavelength (nm) (a) Mark the first four spectral lines of hydrogen (Ha, H3, H, Hồ) in the spectrum. (b) Determine the radial velocity and the direction of the object's movement. (c) Calculate the distance to the observed object. (d) What possible type of object is your team observing? Relative Flux [arb. unit]