Photo of Dr Eric Hébrard

Dr Eric Hébrard

Lecturer in Astrophysics

Email:

Telephone: 01392 723046

Extension: (Streatham) 3046

Expert in chemical modelling of planetary atmospheres, Eric has been studying very different environments, covering a broad range of physical and chemical conditions, from the deep chill of our outer Solar System through the hazy skies of our own early Earth to the blaze of the most recently discovered hot Jupiters. In Exeter, he is involved in the development and improvement of multidimensional chemical models of planetary atmospheres. Noticing the overlap of conditions (pressure, temperature, composition) between the atmospheres of hot Jupiters and car engines, he has contributed to the release of chemical models which successful bridges applied combustion and astrophysics. He has also contributed to the measurement of temperature-dependent VUV absorption cross sections, which are rare but essential data to model photochemical processes in atmospheric models. Finally, he has been responsible these past few years for a new and original strategy for evaluating and insuring both the accuracy and precision of models of these sometimes peculiar planetary atmospheres. It brings new insights into the way chemical models of planetary atmospheres can - and must! - be used.

Positions/Employment

9/2016 - present       Lecturer in Astrophysics
                                 University of Exeter, UK
2/2015 - 7/2016        Senior Research Fellow
                                 NASA Goddard Space Flight Center / Oak Ridge Associated Universities, Greenbelt, MA, USA
6/2013 - 11/2013      Research Associate
                                 Laboratoire Réactions et Génie des Procédés (UMR 7274), Nancy, FRANCE
12/2011 - 4/2013      Research Associate
                                 Centre de Recherches Pétrographiques et Géochimiques (UMR 7358), Nancy, FRANCE
12/2008 - 11/2011    Research Associate
                                 Laboratoire d’Astrophysique de Bordeaux (UMR 5804), Bordeaux, FRANCE
12/2006 - 11/2008    Research Fellow
                                 Laboratoire ATmosphères, Milieux, Observations Spatiales (UMR 8190) / Centre National d'Études
                                 Spatiales, Paris, FRANCE
9/2003 - 11/2006      Research and Teaching Assistant
                                 Laboratoire Interuniversitaire des Systèmes Atmosphériques (UMR 7583), Paris, FRANCE
11/2001 - 8/2002      Visiting Research Assistant
                                 NASA Specialized Center Of Research and Training - Rensselaer Polytechnic Institute, Troy, NY,
                                 USA

Education

2003-2006                Ph.D. in Physics and Chemistry of Planetary Atmospheres
                                 Université Paris 7, FRANCE
                                          Magna cum laude
                                          Dissertation Title: “Photochemical uncertainties in modeling in Titan's atmosphere: Review and
                                                                       consequences”
                                          Faculty Advisors: Prof. François Raulin and Prof. Y. Bénilan
2000-2003                “Magistère Interuniversitaire de Chimie”
                                 École Normale Supérieure, Paris, FRANCE
                                         Magna cum laude
                                         2002-2003 M.Phil. in Physics and Chemistry of Planetary Atmospheres
                                         2000-2001 B.Sc. and M.Sc. in Chemistry

Professional Service

2016                        Internal reviewer for NASA ESSF 2016 grant program.
2015                        Internal reviewer for NASA ROSES-HW 2014 and NASA ESSF 2015 grant programs.
                                External reviewer for NASA ROSES-HW 2014, NASA ROSES-SSW 2015
                                and NASA ROSES-XRP 2015 grant programs.
2014                        External reviewer for NASA ROSES-SSW 2014 grant program.
2009-2012               Member of the Board of the French Exobiology Society (“Société Française d’Exobiologie”
                                - http://www.exobiologie.fr/)
2011                        Member of the LOC for Origins2011 (ISSOL-IAU C51), Montpellier (FRANCE), July 3-8, 2011
2010                        Reviewer for Région Bretagne CREATE 2010 grant program

Reviewer of scientific manuscripts for several peer-reviewed journals (Angew. Chem., Astrophys. J., Icarus, Planet.. Space Sci., Proc. Natl. Acad. Sci.).

Teaching Experience

2009-2013                Teaching assistant (16 h)
                                 
Université Bordeaux 1, FRANCE
                                         Lecturing for graduate-level Astronomy/Astrochemistry
2003-2006                Teaching assistant (192 h)
                                 
Université Paris 7, FRANCE
                                        Lecturing and tutoring for general undergraduate-level Chemistry
2002-2004                Teaching assistant (42 h)
                                 
Lycée Saint Louis, Paris, FRANCE
                                         Tutoring for general undergraduate-level Physics and Chemistry

Grants, awards, fellowships

As PrincipaI Investigator :

2015-2017              NASA Postdoctoral Fellowship
                                   "MEASURE - Modeling (Exo)planetary Atmospheres through Sensitivity and Uncertainty
                                   REasoning"
                                   US$160,000
2007-2009              CNES Postdoctoral Fellowship
                                   "Simulation of aeolian erosion thresholds on Mars and application to dust lifting modeling in a
                                   Mars General Circulation Model"
                                   €120,000

As Co-Investigator :

2016-2019              NASA ROSES Habitable Worlds 2015
                                   "Organic habitable worlds: Simulating habitable zones for organic-rich atmospheres"
                                   PI : S. Domagal-Goldman
                                   US$300,000
2013                       National program of Physics and Chemistry of the Interstellar Medium (PCMI)
                                   CNRS-INSU/CNES/CNRS-INP/CNRS-INC (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €5,000
                              National program of Planetology (PNP)
                                   CNRS-INSU/CNES (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €3,000
2012                      National program of Planetology (PNP)
                                  CNRS-INSU/CNES (FR)
                                   "The HNC molecule in astrochemistry"
                                  PI : J.-C. Loison
                                   €3,500
2011                      National program of Physics and Chemistry of the Interstellar Medium (PCMI)
                                   CNRS-INSU/CNES/CNRS-INP/CNRS-INC (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €8,000
                               National program of Planetology (PNP)
                                   CNRS-INSU/CNES (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €2,000
2010-2011              Interdisciplinary program “Planetary Environments and Origins of Life” (EPOV)
                                   CNRS (FR)
                                   "Photochemistry of hot Jupiters: From experiments to modeling"
                                   PI : Y. Bénilan and M. Dobrijevic
                                   €27,000
2010                       Interdisciplinary program “Planetary Environments and Origins of Life” (EPOV)
                                   CNRS (FR)
                                   "Formation of oligopeptides on the primitive Earth : activation, elongation and accumulation"
                                   PI : R. Pascal
                                   €14,000
                               Interdisciplinary program “Planetary Environments and Origins of Life” (EPOV)
                                   CNRS (FR)
                                   "Modeling the atmosphere and the sulfur isotopic records"
                                   PI : E. Thomassot
                                   €13,000
                              National program of Physics and Chemistry of the Interstellar Medium (PCMI)
                                   CNRS-INSU/CNES/CNRS-INP/CNRS-INC (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €10,000
                              National program of Planetology (PNP)
                                   CNRS-INSU/CNES (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €8,000
2010                      National program of Physics and Chemistry of the Interstellar Medium (PCMI)
                                  CNRS-INSU/CNES/CNRS-INP/CNRS-INC (FR)
                                   "KIDA - A Kinetic Database for Astrochemistry"
                                   PI : W. Wakelam
                                   €3,000

Publications

Airapetian, V. S., A. Glocer, G. Gronoff, E. Hébrard, and W. Danchi. 2016. "Prebiotic chemistry and atmospheric warming of early Earth by an active young Sun." Nature Geoscience, 9 (6): 452-455 [10.1038/ngeo2719]

Daerden, F., J. A. Whiteway, L. Neary, L. Komguem, M. T. Lemmon, N. G. Heavens, B. A. Cantor, E. Hébrard, and M. D. Smith. 2015. "A solar escalator on Mars: Self-lifting of dust layers by radiative heating." Geophysical Research Letters, 42: 7319–7326 [10.1002/2015GL064892]

Venot, O., E. Hébrard, M. Agúndez, L. Decin, and R. Bounaceur. 2015. "New chemical scheme for studying carbon-rich exoplanet atmospheres." Astronomy and Astrophysics, 577: A33 [10.1051/0004-6361/201425311]

Loison, J.-C., E. Hébrard, M. Dobrijevic, K. Hickson, F. Caralp, V. Hue, G. Gronoff, O. Venot, and Y. Bénilan. 2015. "The neutral photochemistry of nitriles, amines and imines in the atmosphere of Titan." Icarus, 247: 218-247 [10.1016/j.icarus.2014.09.039]

Hébrard, E., A. S. Tomlin, R. Bounaceur, and F. Battin-Leclerc. 2015. "Determining predictive uncertainties and global sensitivities for large parameter systems : a case for n-butane oxidation." Proceedings of the Combustion Institute,35 (1): 607-616 [10.1016/j.proci.2014.06.027]

Venot, O., N. Fray, Y. Bénilan, E. Hébrard, G. Larcher, M. Schwell, M. Dobrijevic, and F. Selsis. 2014. "VUV-absorption cross section of CO2 at high temperatures and impact on exoplanet atmospheres." BIO Web of Conferences, 2: 01002 [10.1051/bioconf/20140201002]

Hébrard, E., and B. Marty. 2014. "Coupled noble gas–hydrocarbon evolution of the early Earth atmosphere upon solar UV irradiation." Earth Planetary Science Letters, 385: 40-48 [10.1016/j.epsl.2013.10.022]

Hickson, K. M., J.-C. Loison, T. Cavalié, E. Hébrard, and M. Dobrijevic. 2014. "The evolution of infalling sulfur species in Titan’s atmosphere." Astronomy and Astrophysics, 572: A58 [10.1051/0004-6361/201424703]

Dobrijevic, M., E. Hébrard, J.-C. Loison, and K. M. Hickson. 2014. "Coupling of oxygen, nitrogen, and hydrocarbon species in the photochemistry of Titan’s atmosphere." Icarus, 228: 324-346 [10.1016/j.icarus.2013.10.015]

Venot, O., E. Hébrard, M. Agúndez, M. Dobrijevic, F. Selsis, F. Hersant, N. Iro, and R. Bounaceur. 2013. "The nitrogen chemistry in hot Jupiters atmospheres." Astrophysics and Space Science Proceedings, 35: 67-83 [10.1007/978-1-4614-5191-4_6]

Venot, O., N. Fray, Y. Bénilan, M.-C. Gazeau, E. Hébrard, M. Dobrijevic, and F. Selsis. 2013. "High temperature measurements of VUV absorption cross sections of CO2 and application to exoplanets." Astronomy and Astrophysics,551: A131 [0.1051/0004-6361/201220945]

Hébrard, E., M. Dobrijevic, J.-C. Loison, A. Bergeat, K. M. Hickson, and F. Caralp. 2013. "Photochemistry of C3Hx hydrocarbons in Titan’s stratosphere revisited." i>Astronomy and Astrophysics, 552: A1312 [10.1051/0004-6361/201220686]

Hébrard, E., M. Dobrijevic, J.-C. Loison, A. Bergeat, and K. M. Hickson. 2012. "Neutral production of hydrogen isocyanide (HNC) and hydrogen cyanide (HCN) in Titan’s upper atmosphere." Astronomy and Astrophysics, 541: A21 [10.1051/0004-6361/201218837]

Hébrard, E., C. Listowski, P. Coll, B. Marticorena, G. Bergametti, A. Maatanen, F. Montmessin, and F. Forget. 2012. "An aerodynamic roughness map derived from extended martian rock abundance data." Journal of Geophysical Research - Planets, 117 (E4): E04008 [10.1029/2011JE003942]

Agúndez, M., O. Venot, N. Iro, F. Selsis, F. Hersant, E. Hébrard, and M. Dobrijevic. 2012. "The impact of circulation winds on the atmospheric chemistry of the hot Jupiter HD 209458b." Astronomy and Astrophysics, 548: A73 [10.1051/0004-6361/201220365]

Venot, O., E. Hébrard, M. Agúndez, M. Dobrijevic, F. Selsis, F. Hersant, N. Iro, and R. Bounaceur. 2012. "A chemical model for the atmospheres of hot Jupiters." Astronomy and Astrophysics, 546: A43 [10.1051/0004-6361/201219310]

Wakelam, V., E. Herbst, J.-C. Loison, I. W. Smith, V. Chandrasekaran, B. Pavone, N. G. Adams, M.-C. Bacchus-Montabonel, A. Bergeat, K. Béroff, V. M. Bierbaum, M. Chabot, A. Dalgarno, E. F. van Dishoeck, A. Faure, W. D. Geppert, D. Gerlich, D. Galli, E. Hébrard, F. Hersant, K. M. Hickson, P. Honvault, S. J. Klippenstein, S. Le Picard, G. Nyman, P. Pernot, S. Schlemmer, F. Selsis, I. R. Sims, D. Talbi, J. Tennyson, J. Troe, R. Wester, and L. Wiesenfeld. 2012. "A KInetic Database for Astrochemistry (KIDA)." Astrophysics Journal Supplement Series, 199 (1): 21 [10.1088/0067-0049/199/1/21]

Ribas, I., G. F. Porto de Mello, L. D. Ferreira, F. Selsis, E. Hébrard, S. Catalán, A. Garcés, J. D. do Nascimento Jr, and J. R. de Medeiros. 2010. "Evolution of the solar activity over time and effects on planetary atmospheres. II. Kappa1 Ceti an an analog of the Sun when life arose on Earth." Astrophysical Journal, 714 (1): 384-395 [10.1088/0004-637X/714/1/384]

Peng, Z., M. Dobrijevic, E. Hébrard, N. Carrasco, and P. Pernot. 2010. "Photochemical modeling of Titan’s atmosphere at the ‘10% uncertainty horizon’." Faraday Discussions, 147: 137-153 [10.1039/C003366A]

Dobrijevic, M., T. Cavalié, E. Hébrard, F. Billebaud, F. Hersant, and F. Selsis. 2010. "Key reactions in the photochemistry of hydrocarbons in Neptune’s atmosphere." Planetary Space Science 2010, 58 (12): 1555-1566 [10.1016/j.pss.2010.07.024]

Dobrijevic, M., E. Hébrard, S. Plessis, N. Carrasco, P. Pernot, and M. Bruno-Claeys. 2010. "Comparison of methods for the determination of key reactions in chemical systems: application to Titan's atmosphere." Advances in Space Research, 45 (1): 77-91 [10.1016/j.asr.2009.06.005]

Hébrard, E., P. Pernot, M. Dobrijevic, N. Carrasco, A. Bergeat, K. M. Hickson, A. Canosa, S. D. Le Picard, and I. R. Sims. 2009. "How measurements of rate coefficients at low temperature increase the predictictivity of photochemical models of Titan’s atmosphere." Journal of Physical Chemistry A,113 (42): 11227-11237 [10.1021/jp905524e]

Dobrijevic, M., N. Carrasco, E. Hébrard, and P. Pernot. 2008. "Epistemic bimodality and kinetic hypersensitivity in photochemical models of Titan’s atmosphere." Planetary and Space Science, 56 (12): 1630-1643 [10.1016/j.pss.2008.05.016]

Carrasco, N., E. Hébrard, M. Banaszkiewicz, M. Dobrijevic, and P. Pernot. 2007. "Influence of neutral transport on ion chemistry uncertainties in Titan ionosphere." Icarus, 192 (2): 519-526 [10.1016/j.icarus.2007.08.016]

Hébrard, E., M. Dobrijevic, Y. Bénilan, and F. Raulin. 2007. "Photochemical uncertainties in modeling Titan’s atmosphere: first consequences." Planetary and Space Science 2007, 55 (10): 1470-1489 [10.1016/j.pss.2007.04.006]

Raulin, F., Y. Bénilan, P. Coll, D. Coscia, M.-C. Gazeau, E. Hébrard, A. Jolly, M.-J. Nguyen, C. Romanzin, and R. Sternberg. 2006. "The new Titan: an astrobiological perspective." Proceedings of SPIE, 6309: 630901 [10.1117/12.675408]

Hébrard, E., M. Dobrijevic, Y. Benilan, and F. Raulin. 2006. "Photochemical uncertainties in modeling Titan’s atmosphere: a review." Journal of Photochemistry and Photobiology C: Photochemistry Reviews, 7 (4): 211-230 [10.1016/j.jphotochemrev.2006.12.004]

Hébrard, E., Y. Bénilan, and F. Raulin. 2005. "Sensitivity effects of photochemical parameters uncertainties on hydrocarbon production in the atmosphere of Titan." Advances in Space Research, 36 (2): 68-273 [10.1016/j.asr.2005.03.093]

Romanzin, C., M.-C. Gazeau, Y. Bénilan, et al. E. Hébrard, A. Jolly, F. Raulin, S. Boyé-Péronne, S. Douin, and D. Gauyacq. 2005. "Methane photochemistry : a brief review in the frame of a new experimental program of Titan’s atmosphere simulation." Advances in Space Research, 36 (2): 258-267 [10.1016/j.asr.2005.03.079]

Talks, Presentations and Posters

16 invited presentations in (inter)national conferences. 55 oral presentations in (inter)national conferences. 16 poster presentations in (inter)national conferences.

Selected Public Outreach

2006 - Present               5. Martin H. and Hébrard E. “Land of Origin” Biofutur, 26-33 (2013).
                                       4. Hébrard E. “Titan, « une Terre primitive mise au congélateur »” Le Mensuel de l’Université,
                                           April 2009
                                       3. Raulin F. and Hébrard E. “Exobiologie et mathématiques” Maths Nature Express, Comité
                                           International des jeux mathématiques, pp. 43-47 (2008).
                                       2. Hébrard E. “Un « certain » regard sur Titan”. Le Mensuel de l’Université, March 2007.
                                       1. Hébrard E. “Un enfant des étoiles” Science Careers, January 20th, 2006.

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