eclipse observation
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2020 ◽  
Vol 496 (2) ◽  
pp. 1638-1644 ◽  
Author(s):  
Thomas Mikal-Evans ◽  
David K Sing ◽  
Tiffany Kataria ◽  
Hannah R Wakeford ◽  
Nathan J Mayne ◽  
...  

ABSTRACT We present four new secondary eclipse observations for the ultrahot Jupiter WASP-121b acquired using the Hubble Space Telescope Wide Field Camera 3. The eclipse depth is measured to a median precision of 60 ppm across 28 spectroscopic channels spanning the 1.12–$1.64\, \mu {\rm m}$ wavelength range. This is a considerable improvement to the 90 ppm precision we achieved previously for a single eclipse observation using the same observing set-up. Combining these data with those reported at other wavelengths, a blackbody spectrum for WASP-121b is ruled out at >6σ confidence and we confirm the interpretation of previous retrieval analyses that found the data are best explained by a dayside thermal inversion. The updated spectrum clearly resolves the water emission band at 1.3–$1.6\, \mu {\rm m}$, with higher signal-to-noise than before. It also fails to reproduce a bump in the spectrum at $1.25\, \mu {\rm m}$ derived from the first eclipse observation, which had tentatively been attributed to VO emission. We conclude that the latter was either a statistical fluctuation or a systematic artefact specific to the first eclipse data set.



2018 ◽  
Vol 869 (2) ◽  
pp. L25 ◽  
Author(s):  
Matthew J. Hooton ◽  
Christopher A. Watson ◽  
Ernst J. W. de Mooij ◽  
Neale P. Gibson ◽  
Daniel Kitzmann






2016 ◽  
Vol 771 ◽  
pp. 012034
Author(s):  
Johan Muhamad ◽  
Farahhati Mumtahana ◽  
Heri Sutastio ◽  
Irfan Imaduddin ◽  
Gerhana P. Putri


2016 ◽  
Vol 361 (5) ◽  
Author(s):  
Zhi Li ◽  
Zhongquan Qu ◽  
Xiaoli Yan ◽  
Guangtao Dun ◽  
Liang Chang


Author(s):  
SERGE KOUTCHMY ◽  
CYRIL BAZIN ◽  
JEAN-YVES PRADO ◽  
PHILIPPE LAMY ◽  
PATRICK ROCHER




1994 ◽  
Author(s):  
Jonathan W. Woo ◽  
George W. Clark ◽  
Fumiaki Nagase


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