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Exoplanet atmospheres as indicators of life: From hot gas giants to Earth-like planets

Total Cost €


EC-Contrib. €






 EXOPLANETBIO project word cloud

Explore the words cloud of the EXOPLANETBIO project. It provides you a very rough idea of what is the project "EXOPLANETBIO" about.

temperature    bearing    brogi    planets    cooler    jupiter    biomarker    extrasolar    age    enormous    time    gases    changing    stone    winds    extremely    revolutionary    pioneering    neptunes    giants    ratios    solving    telescope    spectroscopically    1000    spin    nature    unambiguously    successfully    compositions    forms    histories    function    imaging    upper    jupiters    crires    rotation    spectroscopy    spectrograph    complete    dominant    2010    vertical    obtain    earths    snellen    isotope    700    atmospheres    inventory    determined    contrast    deck    rate    young    al    technique    2014    vlt    active    cloud    atmospheric    cool    rates    planet    earth    super    instrument    profiles    exoplanets    surge    1500    hot    400    exoplanet    gas    ground    breaking    2012    combines    first    techniques    altitude    et    driver    longitudinal    plays    evolutionary    2017    dispersion    spectroscopic    probe    mass    stepping    species    molecules    bulk    giant   

Project "EXOPLANETBIO" data sheet

The following table provides information about the project.


Organization address
address: RAPENBURG 70
city: LEIDEN
postcode: 2311 EZ

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Total cost 2˙300˙962 €
 EC max contribution 2˙300˙962 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-AdG
 Funding Scheme ERC-ADG
 Starting year 2016
 Duration (year-month-day) from 2016-09-01   to  2021-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITEIT LEIDEN NL (LEIDEN) coordinator 2˙300˙962.00


 Project objective

This is a proposal to use a new ground-breaking spectroscopic technique to study the atmospheres of extrasolar planets. Understanding planet atmospheric processes and their evolutionary histories is crucial for unambiguously identifying biomarker gases, and forms the main driver behind the enormous surge in exoplanet atmospheric research.

I propose to lead a program using the new VLT CRIRES instrument, that will focus on the new ground-breaking developments in ground-based high-dispersion spectroscopy, in which my work plays a leading role. We successfully determined the dominant spectroscopically-active species in hot Jupiter atmospheres (e.g. Brogi, Snellen et al. Nature 2012), provided the first evidence for high altitude winds (Snellen et al. Nature 2010), and determined for the first time the spin-rotation rate of a young gas-giant planet (Snellen et al. Nature 2014) – pioneering a technique that combines high-dispersion spectroscopy with high-contrast imaging.

The new CRIRES spectrograph at the VLT (2017) will have a revolutionary impact in the field, changing the main focus of current atmospheric research from hot 1000-1500 K gas giants to cooler 400-700 K Neptunes and Super-Earths. With this new instrument, I will 1) make a large inventory of planet spin rates as function of planet mass and age, 2) probe the atmospheres of cool super-Earths above the cloud-deck for the first time, solving for their bulk compositions. 3) determine the vertical and longitudinal atmospheric temperature profiles of hot Jupiters, and obtain a complete inventory of the C and O bearing molecules in their upper atmospheres. 4) I will for the first time probe isotope-ratios in exoplanet atmospheres. This project will be an important stepping stone in developing high-dispersion spectroscopic techniques for studying Earth-like exoplanets with the European Extremely Large Telescope.


year authors and title journal last update
List of publications.
2018 H. J. Hoeijmakers, I. A. G. Snellen, S. E. van Terwisga
Searching for reflected light from τ Bootis b with high-resolution ground-based spectroscopy: Approaching the 10 −5 contrast barrier
published pages: A47, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201731192
Astronomy & Astrophysics 610 2019-06-13
2018 O. Burggraaff, G. J. J. Talens, J. Spronck, A.-L. Lesage, R. Stuik, G. P. P. L. Otten, V. Van Eylen, D. Pollacco, I. A. G. Snellen
Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)
published pages: A32, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833142
Astronomy & Astrophysics 617 2019-06-03
2019 P. A. Wilson, R. Kerr, A. Lecavelier des Etangs, V. Bourrier, A. Vidal-Madjar, F. Kiefer, I. A. G. Snellen
Detection of nitrogen gas in the β Pictoris circumstellar disc
published pages: A121, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834346
Astronomy & Astrophysics 621 2019-06-03
2018 M. Salz, S. Czesla, P. C. Schneider, E. Nagel, J. H. M. M. Schmitt, L. Nortmann, F. J. Alonso-Floriano, M. López-Puertas, M. Lampón, F. F. Bauer, I. A. G. Snellen, E. Pallé, J. A. Caballero, F. Yan, G. Chen, J. Sanz-Forcada, P. J. Amado, A. Quirrenbach, I. Ribas, A. Reiners, V. J. S. Béjar, N. Casasayas-Barris, M. Cortés-Contreras, S. Dreizler, E. W. Guenther, T. Henning, S. V. Jeffers, A. Kaminski, M. Kürster, M. Lafarga, L. M. Lara, K. Molaverdikhani, D. Montes, J. C. Morales, A. Sánchez-López, W. Seifert, M. R. Zapatero Osorio, M. Zechmeister
Detection of He I λ10830 Å absorption on HD 189733 b with CARMENES high-resolution transmission spectroscopy
published pages: A97, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833694
Astronomy & Astrophysics 620 2019-06-03
2018 N. Casasayas-Barris, E. Pallé, F. Yan, G. Chen, S. Albrecht, L. Nortmann, V. Van Eylen, I. Snellen, G. J. J. Talens, J. I. González Hernández, R. Rebolo, G. P. P. L. Otten
Na I and H α absorption features in the atmosphere of MASCARA-2b/KELT-20b
published pages: A151, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832963
Astronomy & Astrophysics 616 2019-06-03
2018 V Van Eylen, Camilla Agentoft, M S Lundkvist, H Kjeldsen, J E Owen, B J Fulton, E Petigura, I Snellen
An asteroseismic view of the radius valley: stripped cores, not born rocky
published pages: 4786-4795, ISSN: 0035-8711, DOI: 10.1093/mnras/sty1783
Monthly Notices of the Royal Astronomical Society 479/4 2019-06-03
2019 F. J. Alonso-Floriano, A. Sánchez-López, I. A. G. Snellen, M. López-Puertas, E. Nagel, P. J. Amado, F. F. Bauer, J. A. Caballero, S. Czesla, L. Nortmann, E. Pallé, M. Salz, A. Reiners, I. Ribas, A. Quirrenbach, J. Aceituno, G. Anglada-Escudé, V. J. S. Béjar, E. W. Guenther, T. Henning, A. Kaminski, M. Kürster, M. Lampón, L. M. Lara, D. Montes, J. C. Morales, L. Tal-Or, J. H. M. M. Schmitt, M. R. Zapatero Osorio, M. Zechmeister
Multiple water band detections in the CARMENES near-infrared transmission spectrum of HD 189733 b
published pages: A74, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834339
Astronomy & Astrophysics 621 2019-06-03
2019 P. Mollière, I. A. G. Snellen
Detecting isotopologues in exoplanet atmospheres using ground-based high-dispersion spectroscopy
published pages: A139, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834169
Astronomy & Astrophysics 622 2019-06-03
2019 Vincent Van Eylen, Simon Albrecht, Xu Huang, Mariah G. MacDonald, Rebekah I. Dawson, Maxwell X. Cai, Daniel Foreman-Mackey, Mia S. Lundkvist, Victor Silva Aguirre, Ignas Snellen, Joshua N. Winn
The Orbital Eccentricity of Small Planet Systems
published pages: 61, ISSN: 1538-3881, DOI: 10.3847/1538-3881/aaf22f
The Astronomical Journal 157/2 2019-06-03
2019 Dilovan B. Serindag, Ignas A. G. Snellen
Testing the Detectability of Extraterrestrial O 2 with the Extremely Large Telescopes Using Real Data with Real Noise
published pages: L7, ISSN: 2041-8213, DOI: 10.3847/2041-8213/aafa1f
The Astrophysical Journal 871/1 2019-06-03
2018 H. J. Hoeijmakers, H. Schwarz, I. A. G. Snellen, R. J. de Kok, M. Bonnefoy, G. Chauvin, A. M. Lagrange, J. H. Girard
Medium-resolution integral-field spectroscopy for high-contrast exoplanet imaging
published pages: A144, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832902
Astronomy & Astrophysics 617 2019-06-03
2018 Lisa Nortmann, Enric Pallé, Michael Salz, Jorge Sanz-Forcada, Evangelos Nagel, F. Javier Alonso-Floriano, Stefan Czesla, Fei Yan, Guo Chen, Ignas A. G. Snellen, Mathias Zechmeister, Jürgen H. M. M. Schmitt, Manuel López-Puertas, Núria Casasayas-Barris, Florian F. Bauer, Pedro J. Amado, José A. Caballero, Stefan Dreizler, Thomas Henning, Manuel Lampón, David Montes, Karan Molaverdikhani, Andreas Quirrenbach, Ansgar Reiners, Ignasi Ribas, Alejandro Sánchez-López, P. Christian Schneider, María R. Zapatero Osorio
Ground-based detection of an extended helium atmosphere in the Saturn-mass exoplanet WASP-69b
published pages: 1388-1391, ISSN: 0036-8075, DOI: 10.1126/science.aat5348
Science 362/6421 2019-06-03
2017 J. L. Birkby, R. J. de Kok, M. Brogi, H. Schwarz, I. A. G. Snellen
Discovery of Water at High Spectral Resolution in the Atmosphere of 51 Peg b
published pages: 138, ISSN: 1538-3881, DOI: 10.3847/1538-3881/aa5c87
The Astronomical Journal 153/3 2019-06-03
2018 I. A. G. Snellen, A. G. A. Brown
The mass of the young planet Beta Pictoris b through the astrometric motion of its host star
published pages: 883-886, ISSN: 2397-3366, DOI: 10.1038/s41550-018-0561-6
Nature Astronomy 2/11 2019-06-03
2017 I. A. G. Snellen, J.-M. Désert, L. B. F. M. Waters, T. Robinson, V. Meadows, E. F. van Dishoeck, B. R. Brandl, T. Henning, J. Bouwman, F. Lahuis, M. Min, C. Lovis, C. Dominik, V. Van Eylen, D. Sing, G. Anglada-Escudé, J. L. Birkby, M. Brogi
Detecting Proxima b’s Atmosphere with JWST Targeting CO 2 at 15 μ m Using a High-pass Spectral Filtering Technique
published pages: 77, ISSN: 1538-3881, DOI: 10.3847/1538-3881/aa7fbc
The Astronomical Journal 154/2 2019-06-03
2018 D. J. M. Petit dit de la Roche, H. J. Hoeijmakers, I. A. G. Snellen
Molecule mapping of HR8799b using OSIRIS on Keck
published pages: A146, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833384
Astronomy & Astrophysics 616 2019-06-03

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