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Assigned ID: 4167
----- Attempting Submission 1 (Tue May 23 20:09:00 GMT 2023) -----
HST Phase I Proposal 4167 successfully submitted.
Receipt: # 4167-1
----- Attempting Submission 2 (Tue May 23 22:00:50 GMT 2023) -----
0
----- Attempting Submission 1 (Thu Sep 14 20:05:40 GMT 2023) -----
----- Attempting Submission 2 (Tue Nov 28 17:11:42 GMT 2023) -----
----- Attempting Submission 3 (Fri Apr 05 21:43:21 GMT 2024) -----
----- Attempting Submission 4 (Fri May 10 20:23:27 GMT 2024) -----
How shiny is HD209458b in the NUV?
Recent CHEOPS detection of reflected light on HD209458b indicated a geometric albedo consistent with a clear atmosphere and Rayleigh scattering from hydrogen. However, broadband photometry could not provide any additional spectral information. We propose to follow up with eclipse observation using STIS G430L in spatial scan mode to measure the Rayleigh scattering slope in the blue part of the spectrum and search for any aerosol spectral features.
We need two visit with 5 consecutive orbits each to observe the eclipses of HD 209458b with STIS G430L in spatial scan mode. We request a phase window constraint of 30 mins to capture the full eclipse and out-of-eclipse baseline.
PI Guangwei Fu is an expert in the analysis of HST WFC3 and STIS transmission and emission observations, including population-wide surveys with such data. He is is PI of 2 recent HST programs and Co-I in 5 upcoming JWST programs.
Co-I Prof. Drake Deming is an expert in exoplanet atmosphere characterization using space telescopes. He lead the very first studying using HST WFC3 in spatial scan mode on HD189733b and XO-1 in 2013. He is also the PI of numerous past successful HST exoplanet programs (ID: 12181, 12449, 12495, 12844, 14260) with a total of 244 orbits allocated.
Co-I Prof. Eliza Kempton is an expert in exoplanet atmosphere modelling and retrieval.
Co-I Prof. David Sing is an expert in observational exoplanet atmosphere characterization and the PI of the largest HST exoplanetary treasury program (ID: 14767) with 498 orbits allocated.
Co-I Dr. Peter Gao is an expert in exoplanet atmosphere cloud/haze modelling.
Co-I Prof. Lothringer is an expert in both observing with HST, as well as atmosphere modeling and retrieval with PHOENIX. Dr. Lothringer has extensive experience studying the highly irradiated class of ultra-hot Jupiters and is PI of 4 recent HST programs and 2 upcoming JWST programs.
Exoplanets and Exoplanet Formation
6
false
false
false
false
false
false
false
false
AVAILABLE
STAR
EXTRA-SOLAR PLANET
G III-I
NO
This object was generated by the targetselector and retrieved from the SIMBAD database.
J2000
J2000
STIS/CCD
Spectroscopic
No
No
G430L
4300
The scheduling data was generated by CASM 32.0.
CASM was run in Phase II mode.
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