Instructions
1. Use group 1 and group 2 data to estimate the orbital period.
2. Use the period to compare the two groups more precisely.
3. If the results in part 2 look good, use the same period to compare the next group of data; if not, change the period and try again.
4. Keep repeating the procedure with more groups until you have a period that fits all the data.
Radial Velocity Data for HD15144 |
JD - 2,440,000 |
Vr (km/sec) |
Group |
1257.930 1258.933 |
-17.7 +16.1 |
5 |
1582.919 1584.960 |
+19.7 - 9.5 |
6 |
1697.732 |
- 0.3 |
6 |
2001.941 |
- 0.6 |
6 |
2319.943 |
+ 7.9 |
6 |
2615.096 2616.113 2617.109 2618.103 |
- 1.8 -13.0 +18.6 - 1.9 |
1 |
2676.930 2677.999 2679.069 2680.014 |
+15.8 + 0.6 -12.0 +17.6 |
2 |
3109.818 3110.879 3111.926 |
- 5.1 - 8.6 +20.6 |
3 |
4503.043 4503.968 4505.007 4506.038 |
+20.5 - 8.8 - 2.4 +21.7 |
4 |
|