Calculate distances and velocites of galaxies In the Table below you are given d

Question

Calculate distances and velocites of galaxies In the Table below you are given data for eight galaxies. Use these data to answer all questions in this lab. The rest wavelength of the prominent Calcium absorption line is lambda _rest = 397nm. The speed of light: c = 3.0 times 10^5 km/s. For Galaxy M104 calculate the distance d in Mpc and recessional velocity v_r km/s. Put your answers separated by a comma. d, v_r = 16.1, 1307 Mpc, km/s For Galaxy M95 calculate the distance d in Mpc and recessional velocity v_r km/s. Put your answers separated by a comma. d, v_r = 17.005, 900 Mpc, km/s

Explanation / Answer

recessional velocity calculate by this formula v= Hod

where d= is the distance of galaxy in Mpc and Ho is hubble constant. value of the hubble constant is 500 km/s/Mpc

then the answer is for

1. M87

d =16.1 then v = 16.1 *500 = 8050

2. M60

d =17.005 then v = 17.005 *500 = 8502.5

3. M104

d =12.6 then v = 12.6 *500 = 6300

4. M95

d =10 then v = 10 *500 = 5000

5. M106

d = 7 then v = 7 *500 = 3500

6. M94

d = 4.91 then v = 4.91 *500 = 2455

7. M108

d =14.1 then v = 14.1 *500 = 7050

8. M82

d =3.5 then v = 3.5 *500 = 1750

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