Publications and Results

• A. Anna John, A. Collier Cameron, J. P. Faria,   A. Mortier, T. G. Wilson, et al. “Sub-m s^-1 upper limits from a deep HARPS-N radial-velocity search for planets orbiting HD 166620 and HD 144579” 
  Monthly Notices of the Royal Astronomical Society, Volume 525, Issue 2, pp.1687-1704 (August 2023)
• A. Anna John, A. Collier Cameron, T. G. Wilson, et al. “The impact of two non-transiting planets and stellar activity on mass determinations for the super-Earth CoRoT-7b” 
  Monthly Notices of the Royal Astronomical Society, Volume 515, Issue 3, pp.3975-3995 (July 2022)
• A. Leleu, Y. Alibert, N. C. Hara, M. J. Hooton, T. G. Wilson et al.   “Six transiting planets and a chain of Laplace resonances in TOI-178”   Astronomy & Astrophysics, 649, A26.  (May 2021)
• B. S. Gregory, M. Claire & S. Rugheimer.   “Photochemical modelling of atmospheric oxygen levels confirms two stable states”   Earth and Planetary Science Letters, 561, 116818.  (May 2021)
• P. Barth, C. Helling, E. E. Stüeken et al.   “MOVES IV. Modelling the influence of stellar XUV-flux, cosmic rays, and stellar energetic particles on the atmospheric composition of the hot Jupiter HD 189733b”   Monthly Notices of the Royal Astronomical Society, 502, 4, pp. 6201-€“6215.  (Apr 2021)
• Ch. Helling, M. Worters, D. Samra et al.   “Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. III. Changing ionisation and the emergence of an ionosphere”   Astronomy & Astrophysics, 648, A80.  (Apr 2021)
• P. Woitke, O. Herbort, Ch. Helling et al.   “Coexistence of CH₄, CO₂, and H₂O in exoplanet atmospheres”   Astronomy & Astrophysics, 646, A43.  (Feb 2021)
• C. Mettam & A. L. Zerkle   “Nitrogen Isotopes in Deep Time”   in Cambridge Elements, Series: Elements in Geochemical Tracers in Earth System Science, Cambridge University Press  (Jan 2021)
• M. Lendl, S. Csizmadia, A. Deline et al.   “The hot dayside and asymmetric transit of WASP-189 b seen by CHEOPS”   Astronomy & Astrophysics, 643, A94.  (Nov 2020)
• J. Shen, A. Smith, M. Claire & A. L. Zerkle   “Unravelling biogeochemical phosphorus dynamics in hyperarid Mars-analogue soils using stable oxygen isotopes in phosphate”   Geobiology, 18, 6, p. 760-779.  (Nov 2020)
• M. Min, C. W. Ormel, K. Chubb, C. Helling & Y. Kawashima   “The ARCiS framework for exoplanet atmospheres: modelling philosophy and retrieval”   Astronomy & Astrophysics, 642, A28.  (Oct 2020)
• P. S. Teixeira, A. Scholz & J. Alves   “A wide survey for circumstellar disks in the Lupus complex”   Astronomy & Astrophysics, 642, A86.  (Oct 2020)
• E. E. Stüeken, S. Jones, T. D. Raub et al.   “Geochemical fingerprints of seawater in the Late Mesoproterozoic Midcontinent Rift, North America: life at the marine-land divide”   Chemical Geology, 553, 119812.  (Oct 2020)
• Ch. Helling, Y. Kawashima, V. Graham, D. Samra et al.   “Mineral cloud and hydrocarbon haze particles in the atmosphere of the hot Jupiter JWST target WASP-43b ”   Astronomy & Astrophysics, 641, A178.  (Sep 2020)
• E. E. Stüeken & M. A. Kipp   “Selenium isotope paleobiogeochemistry”   in Cambridge Elements, Series: Elements in Geochemical Tracers in Earth System Science, Cambridge University Press  (Sep 2020)
• C. Fuchsman & E. E. Stüeken   “Using modern low-oxygen marine ecosystems to understand the nitrogen cycle of the Paleo- and Mesoproterozoic oceans”   Environmental Microbiology (e-pub ahead of print)  (Sep 2020)
• J. Baross, R. Anderson & E. E. Stüeken   “The environmental roots of the origin of life”   Chapter in Planetary astrobiology, Meadows, V., Arney, G., Schmidt, B. & Des Marais, D. J. (eds.). University of Arizona Press, p. 71-92.  (2020)
• E. E. Stüeken & G. Fournier   “Life as a planetary process”   Chapter in Planetary astrobiology, Meadows, V., Arney, G., Schmidt, B. & Des Marais, D. J. (eds.). University of Arizona Press, p. 93-120.  (2020)
• T. Boocock, S. Mikhail, J. Prytulak, T. Di Ricco, E. E. Stüeken   “Nitrogen mass fraction and stable isotope ratios for fourteen geological reference materials: evaluating the applicability of elemental analyser versus sealed tube combustion methods”   Geostandards and Geoanalytical Research, 44, 3, p. 537-551.  (Sep 2020)
• E. E. Stüeken, M. de Castro, L. Krotz et al.   “Optimized switch-over between CHNS abundance and CNS isotope ratio analyses by elemental analyzer-isotope ratio mass spectrometry: application to six geological reference materials”   Rapid Communications in Mass Spectrometry, 34, 18, 11 p., e8821.  (Sep 2020)
• G. Hébrard, R. F. Díaz, A. C. M. Correia, A. Collier Cameron et al.   “Discovery and characterization of the exoplanets WASP-148b and c: a transiting system with two interacting giant planets”   Astronomy & Astrophysics, 640, A32.  (Aug 2020)
• S. Raetz, B. Stelzer & A. Scholz   “The rotation–activity relation of M dwarfs: from K2 to TESS and PLATO”   Astronomische Nachrichten, 341, 5, p. 519-556  (Aug 2020)
• K. Paiste, A. Lepland, A. L. Zerkle et al.   “Identifying global vs. basinal controls on Paleoproterozoic organic carbon and sulfur isotope records”   Earth-Science Reviews, 207, 103230.  (Aug 2020)
• J. A. Hitchcock, C. Helling, A. Scholz, G. Hodosan, M. Dominik et al.   “Large-scale changes of the cloud coverage in the ε Indi Ba,Bb system”   Monthly Notices of the Royal Astronomical Society, 495, 4, p. 3881-3999.  (Jul 2020)
• D. Samra, Ch. Helling & M. Min   “Mineral snowflakes on exoplanets and brown dwarfs: Effects of micro-porosity, size distributions, and particle shape ”   Astronomy & Astrophysics, 639, A107.  (Jul 2020)
• M. R. Warke, T. Di Rocco, A. L. Zerkle et al.   “The Great Oxidation Event preceded a Paleoproterozoic “snowball Earth””   Proceedings of the National Academy of Sciences of the United States of America (e-pub ahead of print)  (Jun 2020)
• S. Raetz, B. Stelzer, M. Damasso & A. Scholz   “Rotation-activity relations and flares of M dwarfs with K2 long- and short-cadence data”   Astronomy & Astrophysics, 637, A22.  (May 2020)
• L. Xia, J. Cao, E. E. Stüeken et al.   “Unsynchronized evolution of salinity and pH of a Permian alkaline lake influenced by hydrothermal fluids: a multi-proxy geochemical study”   Chemical Geology, 541, 119581.  (May 2020)
• G. E. Turner & K. Horne   “Null geodesics in conformal gravity”   Classical and Quantum Gravity, 37, 9, 14 p., 095012.  (Apr 2020)
• E. J. Allender, C. R. Cousins, M.D. Gunn et al.   “Multiscale and multispectral characterization of mineralogy with the ExoMars 2020 rover remote sensing payload”   Earth and Space Science, 7, 4, 18 p., e2019EA000692.  (Apr 2020)
• O. Herbort, P. Woitke, Ch. Helling, A. Zerkle   “The atmospheres of rocky exoplanets. I. Outgassing of common rock and the stability of liquid water”   Astronomy & Astrophysics, 636, A71.  (Apr 2020)
• B. A. Sachs   Book review: Fourie, C., and A. Rid (eds) 2017.   “What is enough? Sufficiency, justice, and health.”   Journal of Medicine and Philosophy, 45, 2, p. 251-258.  (Apr 2020)
• J. J. Evitts, D. Froebrich, A. Scholz et al.   “A survey for variable young stars with small telescopes: II – mapping a protoplanetary disc with stable structures at 0.15 au”   Monthly Notices of the Royal Astronomical Society, 493, 1, p. 184-198.  (Mar 2020)
• K. Molaverdikhani, C. Helling, B. W. P. Lew, R. J. MacDonald, D. Samra, N. Iro, P. Woitke & V. Parmentier   “Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b II. Mapping the effects of gas kinetics”   Astronomy & Astrophysics, 635, A31.  (Mar 2020)
• E. E. Stüeken, S. M. Som, M. Claire et al.   “Mission to planet Earth: the first two billion years”   Space Science Reviews, 216, 37 p., 31.  (Mar 2020)
• D. Futyan, A. Fortier, …, A. C. Cameron et al.   “Expected performances of the Characterising Exoplanet Satellite (CHEOPS) II. The CHEOPS simulator”   Astronomy & Astrophysics, 635, A23.  (Mar 2020)
• K. Paiste, A. Pellerin, A. L. Zerkle et al.   “The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: evidence for biogeochemical sulfur cycling in a semi-restricted basin”   Earth and Planetary Science Letters, 534, 116092.  (Mar 2020)
• E. E. Stüeken, C. Tino, G Arp et al.   “Nitrogen isotope ratios trace high-pH conditions in a terrestrial Mars analog site”   Science Advances. 6, 9, eaay3440.  (Feb 2020)
• W. F. Thi, S. Hocuk, I. Kamp, P. Woitke et al.   “Warm dust surface chemistry in protoplanetary disks: formation of phyllosilicates”   Astronomy & Astrophysics, 635, A16.  (Feb 2020)
• P. Woitke, C. Helling & O. Gunn   “Dust in brown dwarfs and extra-solar planets. VII. Cloud formation in diffusive atmospheres”   Astronomy & Astrophysics, 634, A23.  (Feb 2020)
• C. R. Cousins, S. Mikhail, F. Foucher et al.   “Metamorphic evolution of carbonate-hosted microbial biosignatures”   Geochemical Perspectives Letters, 12, p. 40-45.  (Jan 2020)
• M. Jardine, A. Collier Cameron, J.-F. Donati, G A J Hussain   “Slingshot prominences: coronal structure, mass-loss and spin-down”   Monthly Notices of the Royal Astronomical Society, 491, 3, p. 4076-4088.  (Jan 2020)

Exoplanet Bibbliography Astrophysics and Philosophy

Roberts & Donaldson (2018)       (download pdf)

This bibliography is a compilation of scientific and philosophical references pertaining to exoplanets and space exploration. Many articles discuss issues related to extraterrestrial life and issues surrounding terraforming. Much of the philosophical work published in this area falls within the realm of ethics; where our moral obligations lie regarding space exploration and how different ethical models fare when the possibility of encountering extraterrestrial life is considered. Within philosophy of science, topics of focus are the Fermi paradox and the great filter. The work within Astrophysics focus on the origins of life and the definition of life, as well as the precautions that the human race need to take so that there is no contamination to possible life.

Rio-Scale Calculator

by Duncan Forgan et al.       (link to https://dh4gan.github.io/rioscale2/)

The Rio scale is a tool for communicating the significance of a signal to the general public. It assigns scores to signals detected in searches for extraterrestrial intelligence (SETI), which characterizes both the consequences of a signal and the probability the signal is truly from ETI, in an easily digestible format for laypeople to interpret.
Forgan, Wright, Tarter, Korpela, Siemion, Almar, Piotelet:  “Rio 2.0: revising the Rio scale for SETI detections“, International Journal of Astrobiology (Jul 2018)