Planets and Satellites: Atmospheres

Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission
Context. Ultra-hot Jupiters (UHJs) are gas giant exoplanets that are strongly irradiated by their star, setting intense molecular …
A. Deline, P. E. Cubillos, L. Carone, B.-O. Demory, M. Lendl, W. Benz, A. Brandeker, M. N. Günther, A. Heitzmann, S. C. C. Barros, L. Kreidberg, G. Bruno, D. Kitzmann, A. Bonfanti, M. Farnir, C. M. Persson, S. G. Sousa, T. G. Wilson, D. Ehrenreich, V. Singh, N. Iro, Others
Posted Jul 1, 2025
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Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission
The effect of a biosphere on the habitable timespan of stagnant-lid planets and implications for the atmospheric spectrum
Temperature-dependent biological productivity controls silicate weathering and thereby extends the potential habitable timespan of …
Dennis Höning, Ludmila Carone, Philipp Baumeister, Kathy L. Chubb, John Lee Grenfell, Kaustubh Hakim, Nicolas Iro, Benjamin Taysum, Nicola Tosi
Posted Jan 1, 2025
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The effect of a biosphere on the habitable timespan of stagnant-lid planets and implications for the atmospheric spectrum
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. III. Changing ionisation and the emergence of an ionosphere
Context. Ultra-hot Jupiters are the hottest exoplanets that have been discovered so far. They present a unique possibility to explore …
Ch. Helling, M. Worters, D. Samra, K. Molaverdikhani, N. Iro
Posted Apr 1, 2021
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Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. III. Changing ionisation and the emergence of an ionosphere
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. II. Mapping the effects of gas kinetics
Aims: The atmospheres of ultra-hot Jupiters (UHJs) are commonly considered to be at thermochemical equilibrium. We aim to provide …
K. Molaverdikhani, Ch. Helling, B.~W.~P. Lew, R.~J. MacDonald, D. Samra, N. Iro, P. Woitke, V. Parmentier
Posted Mar 1, 2020
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Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. II. Mapping the effects of gas kinetics
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. I. Cloud and chemistry mapping
Context. Of the presently known ensuremath≈3900 exoplanets, sparse spectral observations are available for ensuremath≈100. Ultra-hot …
Ch. Helling, N. Iro, L. Corrales, D. Samra, K. Ohno, M.~K. Alam, M. Steinrueck, B. Lew, K. Molaverdikhani, R.~J. MacDonald, O. Herbort, P. Woitke, V. Parmentier
Posted Nov 1, 2019
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Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. I. Cloud and chemistry mapping
The GTC exoplanet transit spectroscopy survey. VIII. Flat transmission spectrum for the warm gas giant WASP-80b
Aims: We set out to study the atmosphere of WASP-80b, a warm inflated gas giant with an equilibrium temperature of 800 K, using …
H. Parviainen, E. Pallé, G. Chen, L. Nortmann, F. Murgas, G. Nowak, S. Aigrain, A. Booth, M. Abazorius, N. Iro
Posted Jan 1, 2018
Cite DOI arXiv
The GTC exoplanet transit spectroscopy survey . VII. An optical transmission spectrum of WASP-48b
Context. Transiting planets offer an excellent opportunity for characterizing the atmospheres of extrasolar planets under very …
F. Murgas, E. Pallé, H. Parviainen, G. Chen, L. Nortmann, G. Nowak, A. Cabrera-Lavers, N. Iro
Posted Sep 1, 2017
Cite DOI arXiv
The GTC exoplanet transit spectroscopy survey. IV. Confirmation of the flat transmission spectrum of HAT-P-32b
We observed the hot Jupiter HAT-P-32b (also known as HAT-P-32Ab) to determine its optical transmission spectrum by measuring the …
L. Nortmann, E. Pallé, F. Murgas, S. Dreizler, N. Iro, A. Cabrera-Lavers
Posted Oct 1, 2016
Cite DOI arXiv
The GTC exoplanet transit spectroscopy survey. III. No asymmetries in the transit of CoRoT-29b
Context. The launch of the exoplanet space missions obtaining exquisite photometry from space has resulted in the discovery of …
E. Pallé, G. Chen, R. Alonso, G. Nowak, H. Deeg, J. Cabrera, F. Murgas, H. Parviainen, L. Nortmann, S. Hoyer, J. Prieto-Arranz, D. Nespral, A. Cabrera-Lavers, N. Iro
Posted May 1, 2016
Cite DOI arXiv
The GTC exoplanet transit spectroscopy survey. II. An overly large Rayleigh-like feature for exoplanet TrES-3b
Aims: We search for Rayleigh scattering and K and Na absorption signatures from the atmosphere of TrES-3b using ground-based …
H. Parviainen, E. Pallé, L. Nortmann, G. Nowak, N. Iro, F. Murgas, S. Aigrain
Posted Jan 1, 2016
Cite DOI arXiv