1)Using the Doppler Wobble plot for 51 Pegasi above: What is the semiamplitude of the radial velocity K from the graph?

K = ------------------ m/s

2)What is the mass pf the planet (times the sine of the inclination of its orbit), m_p sin i, in units of kg? (Note : you will need to use the answers to the previous two questions along with the relationship given next to the Doppler Wobble plot above.)

m_p sin i = ------------------ kg

3)What is the mass of the planet, m_p sin i, in units of Jupiter masses, M_J ?

m_p sin i = -------------------------M_J

Time (hours): Velocity (m/s): 51 Pegasi M=2.11 x 1020 kg 100 +50 IM)=1.90 x 1027 kg 1/3 mo sin i KM23 4.19 x 10-10 N-m2/kg 50 20 40 60 80 100 120 140 Time (hours)