Question

this pic will helpful upper one is not clear

1.For Galaxy M87 calculate the distance d in Mpc and recessional velocity vr in km/s. Put your answers separated by a comma.

2.For Galaxy M60 calculate the distance d in Mpc and recessional velocity vr km/s. Put your answers separated by a comma.

3.For Galaxy M104 calculate the distance d in Mpc and recessional velocity vr km/s. Put your answers separated by a comma.

4.For Galaxy M95 calculate the distance d in Mpc and recessional velocity vr km/s.Put your answers separated by a comma.

5. For Galaxy M106 calculate the distance d in Mpc and recessional velocity vr. Put your answers separated by a comma.

6. Calculate the distances and recessional velocities for the remaining three galaxies M94, M108 and M82. For each of the eight galaxies, use its distance and velocity to calculate the corresponding H0(H0=vr/d). Average these values to obtain an estimate of H0.

From your results of distances d and recessional velocity vr, what is the average value of the Hubble constant H0?

ecedig from us: lial stce w you o seived ealaxy, you don't get the ecessional e oc ly d d U e dist Ke to Uegalaxy m" ale y From the dr d' size and escal sizeof d eddxy you can *bian Iredstance lo i e galaxy none is' sh p Uet een distance physical size is ne y t-re and de」i size atere 1 Mpc 10 parsec and 1 parsee 3.086 x 10 km. speed of light x wvelemth shift rest warelength rcccssional velocity- Not ce in the fermula tht as the observe i es larger (shifted more to the red) the recessiunal velccity , cets lare Calculate distances and velocltes ot galaxies n the Table belaw: you are en dsta for etlawius. Usc these dat:t The rest warselength at the nominatCacium anserprkn Ina isAmt answer all questians in this lab 397nm The speed oflet3.1's Physical Angular size | Distance absorved wavelength Size D (Mpc arcminutes Mpx Galaxy elocity or Calcium line (kmys) 3,75 10 38 32 d, Somon 2.3x102 9 358.253 11 1-4 1106 3.9x10-2 | 397.593 97.157 97.9 97.207 1AM10 1D 99 122 11 86 11-2 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 Arest- 397nm. 105 km/s The speed of light: c-3.0 PhysicalAngular size Distance Recessional observed wavelengthXobserved (nm)velocit Galaxy Size D for Calcium line (km/s) (Mpc)(arcminutes) (Mpc) 3.75x10-2 7.1 3.45x10-2 7.5 2.3x102 9 1.1x10 3.9x10-2 17.1 1.4x10-2 3.7x10-2 1.1x10 M87, Virgo A M60 M104, Sombrero M95 M106 M94 M108 M82 398.726 398.501 398.263 398.059 397.593 397.497 397.95 397.287 4 10.2 9.9 8.6

Answer 1

H(Y) Hubble's constant km sec Mpc Ho E(Y) cy) Average Ho km sec Mpc Physical size Angular size Distance Observed wavelength rest wavelength Recessional velo nm arcminutes 71.80694 71.70038 7 1 0 134.25693 9 7 2 3 72.32239 4 3 1 0 375.56675 2 216.87657