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California-Planet-Search / grandsol

Grand Solution - Doppler forward modeling
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Systematic Trends as Function of Chip Position #55

Closed bjfultn closed 7 years ago

bjfultn commented 7 years ago

RVs display systematic wiggles as a function of systemic+BC velocity. This appears to be common to all stars.

sysvel

bjfultn commented 7 years ago

The trends appear to be mostly consistent across orders (at least for 9407).

iGrand_9407_bcbyord.pdf

bjfultn commented 7 years ago

Test with single obslist shared for all orders in each iGrand iteration.

Final multi-order velocities for all stars as a function of absolute (systemic+BC) velocity: absvel_combined

Same as above, but each order plotted separately. screen shot 2017-07-26 at 10 19 12 am

RMS for iGrand vs. CPS code: object iGrand_rms CPS_rms 126053 3.661390 4.404901 127334 3.207189 3.346433 144579 3.281043 3.748296 1461 4.059843 4.117284 157214 3.429516 3.715881 157347 3.162080 3.941418 166620 2.801480 3.099255 50692 6.060601 4.036699 89269 3.243117 3.387754

bjfultn commented 7 years ago

Test with separate obslist shared for all orders in each iGrand iteration.

Final multi-order velocities for all stars as a function of absolute (systemic+BC) velocity: absvel_separate

Same as above, but each order plotted separately. screen shot 2017-07-26 at 10 22 23 am

RMS for iGrand vs. CPS code: object iGrand_rms CPS_rms 126053 5.089466 4.404901 127334 4.007542 3.346433 144579 4.691878 3.748296 1461 4.574293 4.117284 157214 4.694748 3.715881 157347 3.931630 3.941418 50692 11.065057 4.036699 89269 4.355431 3.387754

bjfultn commented 7 years ago

Applied these common systematic trends as the "double fudge".