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SUMMARY:Searching for Day-Night variations in the Fe I emission from WASP-
 33b
DTSTART;VALUE=DATE-TIME:20220907T130000Z
DTEND;VALUE=DATE-TIME:20220907T131500Z
DTSTAMP;VALUE=DATE-TIME:20240704T115911Z
UID:indico-contribution-138@meetings.aip.de
DESCRIPTION:Speakers: Ernst de Mooij (Queen's University Belfast)\nThe ult
 ra-hot Jupiter WASP-33b shows evidence for a thermal inversion in the form
  of emission lines of atoms and molecules\, including OH and Fe. Phase-cur
 ve measurements at optical wavelengths with TESS show a westward phase-off
 set while observations in the infrared with the Spitzer Space Telescope sh
 ow an Eastward offset. We obtained phase-curve observations at high-spectr
 al resolution at optical wavelengths  with Subaru/HDS as well as CFHT/ESPa
 DOnS.\n\nUsing log-likelihood mapping and integrating a simple phase-curve
  model we demonstrate that it is possible to measure phase-curve variation
 s\, although unequal pre/post eclipse sampling can result in biases. For t
 he Fe I emission\, we show evidence that the peak is after eclipse at +22 
 +/- 12 degrees\, consistent with the optical phase-curve. We also constrai
 n the day-night contrast to be >0.9\, indicating that\, in the case of Fe 
 I\, the nightside contributes less than 10% of the day-side flux in our si
 mple model.\n\nhttps://meetings.aip.de/event/16/contributions/138/
LOCATION:Leibniz Institute for Astrophysics Potsdam (AIP) Lecture Hall
URL:https://meetings.aip.de/event/16/contributions/138/
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