The geometric albedo of the hot Jupiter HD 189733b measured with CHEOPS

Autor: Krenn, Andreas F., Lendl, Monika, Patel, Jayshil A., Carone, Ludmila, Deleuil, Magalie, Sulis, Sophia, Collier Cameron, Andrew, Deline, Adrien, Guterman, Pascal, Queloz, Didier, Fossati, Luca, Brandeker, Alexis, Heng, Kevin, Akinsanmi, Babatunde, Adibekyan, Vardan, Bonfanti, Andrea, Demangeon, Oliver D.S., Kitzmann, Daniel, Salmon, S., Sousa, Sérgio G.

Publikováno v: Astronomy & Astrophysics, 672

Context. Measurements of the occultation of an exoplanet at visible wavelengths allow us to determine the reflective properties of a planetary atmosphere. The observed occultation depth can be translated into a geometric albedo. This in turn aids in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7b3e77e0d9a2d4879906b212b3a3dcf
https://hdl.handle.net/20.500.11850/610125

Effect of stellar flares on the upper atmospheres of HD 189733b and HD 209458b

Autor: Chadney, J. M., Koskinen, T. T., Galand, M., Unruh, Y. C., Sanz-Forcada, J.

Stellar flares are a frequent occurrence on young low-mass stars around which many detected exoplanets orbit. Flares are energetic, impulsive events, and their impact on exoplanetary atmospheres needs to be taken into account when interpreting transi

Externí odkaz: http://hdl.handle.net/10150/626411
http://arizona.openrepository.com/arizona/handle/10150/626411

The near-UV transit of HD 189733b with the XMM-Newton optical monitor

Autor: Vincent Bourrier, Maria Steinrueck, Alain Lecavelier des Etangs, David Ehrenreich, George King, Tom Louden, Lia Corrales, Panayotis Lavvas, Peter J. Wheatley

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 506 (2), pp.2453-2458. ⟨10.1093/mnras/stab1863⟩

We present analysis of XMM-Newton Optical Monitor observations in the near-ultraviolet of HD 189733, covering twenty primary transits of its hot Jupiter planet. The transit is clearly detected with both the UVW2 and UVM2 filters, and our fits to the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a64e6b8dedba84db0793cb8374ee31c7

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A chemical kinetics code for modelling exoplanetary atmospheres

Autor: Oliver Shorttle, Nikku Madhusudhan, Paul B. Rimmer, Richard Hobbs

Chemical compositions of exoplanets can provide key insights into their physical processes, and formation and evolutionary histories. Atmospheric spectroscopy provides a direct avenue to probe exoplanetary compositions. However, whether obtained in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fd652c6dec34963a12c45d6ee25d3bf