Skip to main content

Planetary Atmospheres and Chemical Markers for Extraterrestrial Life

  • Chapter
  • First Online:

Part of the book series: Physical Chemistry in Action ((PCIA))

Abstract

A decade of exoplanet research has led to surprising discoveries, from giant planets close to their star, to planets orbiting two stars, all the way to the first hot, confirmed rocky worlds with potentially permanent lava on their surfaces due to the star’s proximity. Observation techniques have reached the sensitivity to explore the chemical composition of the atmospheres as well as physical structure of some detected exoplanets and to detect planets of less than 10 Earth masses (MEarth) and 2 Earth radii, so called Super-Earths, among them some that may be habitable. To characterize a planet’s atmosphere and its potential habitability, we explore absorption features in the emergent and transmission spectra of the planet that indicate the presence of biology. This Chapter discusses our strategy to characterize rocky exoplanets remotely, the basics underlying the concept of the Habitable Zone as well as chemical markers that indicate life through geological time.

This is a preview of subscription content, log in via an institution.

Buying options

Chapter
USD   29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD   149.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD   199.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD   199.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Learn about institutional subscriptions

Notes

  1. 1.

    An emergent spectrum is recorded using scattered starlight plus thermal emission from the planet’s atmosphere.

References

  1. Léger A, Rouan D, Schneider J, Barge P, Fridlund M, Samuel B, Ollivier M, Guenther E et al (2009) Transiting exoplanets from the CoRoT space mission. VIII. CoRoT-7b: the first super-Earth with measured radius. Astron Astrophys 506:287

    Article  Google Scholar 

  2. Batalha NM, Borucki WJ, Bryson ST, Buchhave LA, Caldwell DA, Christensen-Dalsgaard J, Ciardi D et al (2011) Kepler’s first rocky planet: Kepler-10b. Astrophys J 729:27

    Article  Google Scholar 

  3. Schaefer L, Fegley B (2009) Chemistry of silicate atmospheres of evaporating super-Earths. Astrophys J L703:L113

    Article  Google Scholar 

  4. Miguel Y, Kaltenegger L, Fegley B, Schaefer L (2011) Compositions of hot super-Earth atmospheres: exploring Kepler candidates. Astrophys J L742:L19

    Article  Google Scholar 

  5. Kalas P, Graham JR, Chiang E, Fitzgerald MP, Clampin M, Kite ES, Stapelfeldt K, Marois C, Krist J (2008) Optical images of an exosolar planet 25 light-years from Earth. Science 322:1345–1347

    Article  CAS  Google Scholar 

  6. Bonfils X et al (2011) The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample, A&A, 2011arXiv1111.5019B

    Google Scholar 

  7. Howard AW, Marcy GW, Bryson ST, Jenkins JM, Rowe JF, Batalha NM, Borucki WJ et al (2011) Planet occurrence within 0.25 AU of solar-type stars from Kepler, arXiv:1103.2541

    Google Scholar 

  8. Udry S, Bonfils X, Delfosse X, Forveille T, Mayor M, Perrier C, Bouchy F, Lovis C, Pepe F, Queloz D, Bertaux J-L et al (2007) The HARPS search for southern extrasolar planets XI. Super-Earths (5 & 8 M_Earth) in a 3-planet system. Astro Astrophy 469:43

    Article  Google Scholar 

  9. Borucki WJ, Koch DG, Basri G, Batalha N, Brown TM, Bryson ST, Caldwell D et al (2011) Characteristics of planetary candidates observed by Kepler. II. Analysis of the first four months of data. Astrophys J 736:19

    Article  Google Scholar 

  10. Batalha N et al (2012) Planetary candidates observed by Kepler, III: analysis of the first 16 months of data, arXiv:1202.5852

    Google Scholar 

  11. Traub WA (2011) Terrestrial, habitable-zone exoplanet frequency from Kepler. Astrophys J 745:20

    Article  Google Scholar 

  12. Valencia D, Sasselov DD, O’Connell RJ (2007) Detailed models of super-Earths: how well can we infer bulk properties? Astrophys J 665:1413

    Article  CAS  Google Scholar 

  13. Seager S, Kuchner M, Hier-Majumder CA, Militzer B (2007) Mass-radius relationships for solid exoplanets. Astrophys J 669:1279–1297

    Article  CAS  Google Scholar 

  14. Grasset O, Schneider J, Sotin C (2009) A study of the accuracy of mass-radius relationships for silicate-rich and ice-rich planets up to 100 Earth masses. Astrophys J 693:722

    Article  CAS  Google Scholar 

  15. Lissauer JJ, Ragozzine D, Fabrycky DC, Steffen JH, Ford EB, Jenkins JM, Shporer A, Holman MJ, Rowe JF et al (2011) Architecture and dynamics of Kepler’s candidate multiple transiting planet systems. Astrophys J 197:8

    Article  Google Scholar 

  16. Charbonneau D, Berta ZK, Irwin J, Burke CJ, Nutzman P, Buchhave LA, Lovis C, Bonfils X, Latham DW et al (2009) A super-Earth transiting a nearby low-mass star. Nature 462:891

    Article  CAS  Google Scholar 

  17. Désert J-M, Bean J, Miller-Ricci Kempton E, Berta ZK, Charbonneau D et al (2011) Observational evidence for a metal-rich atmosphere on the super-Earth GJ1214b. Astrophys J 731:40

    Article  Google Scholar 

  18. Miller-Ricci Kempton E, Zahnle K, Fortney JJ (2012) The atmospheric chemistry of GJ 1214b: photochemistry and clouds. Astrophys J 745:3

    Article  Google Scholar 

  19. Kaltenegger L, Traub W (2009) Transits of Earth-like planets. Astrophys J 698:519

    Article  CAS  Google Scholar 

  20. Rauer H, Gebauer S, Paris PV, Cabrera J, Godolt M, Grenfell JL, Belu A, Selsis F, Hedelt P, Schreier F (2011) Potential biosignatures in super-Earth atmospheres. I. Spectral appearance of super-Earths around M dwarfs. Astron Astrophys 529, id.A8 2011

    Google Scholar 

  21. Belu AR, Selsis F, Morales J-C, Ribas I, Cossou C, Rauer H (2011) Primary and secondary eclipse spectroscopy with JWST: exploring the exoplanet parameter space. Astron Astrophys 525, id.A83

    Google Scholar 

  22. Scalo J, Kaltenegger L, Segura AG, Fridlund M, Ribas I, Kulikov YN, Grenfell JL, Rauer H, Odert P, Leitzinger M, Selsis F, Khodachenko ML, Eiroa C, Kasting J, Lammer H (2007) M Stars as targets for terrestrial exoplanet searches and biosignature detection. Astrobiology 7:85

    Article  CAS  Google Scholar 

  23. Kaltenegger L, Segura A, Mohanty S (2011) Model spectra of the first potentially habitable super-Earth – Gl581d. Astrophys J 733:35

    Article  Google Scholar 

  24. Des Marais DJ, Harwit MO, Jucks KW, Kasting JF, Lin DNC, Lunine JI, Schneider J, Seager S, Traub WA, Woolf NJ (2002) Remote sensing of planetary properties and biosignatures on extrasolar terrestrial planets. Astrobiology 2:153–181

    Article  CAS  Google Scholar 

  25. Kaltenegger L, Selsis F, Fridlund M, Lammer H, Beichman C, Danchi W, Eiroa C, Henning T, Herbst T, Léger A, Liseau R, Lunine J, Paresce F, Penny A, Quirrenbach A, Röttgering H, Schneider J, Stam D, Tinetti G, White GJ (2010) Deciphering Spectral Fingerprints of Habitable Exoplanets, Astrobiology 10(1):89–102

    CAS  Google Scholar 

  26. Meadows V, Seager S (2010) Terrestrial planet atmospheres and biosignatures. In: Seager S (ed) Exoplanets. University of Arizona Press, Tucson, pp 441–470, 526 pp. ISBN 978-0-8165-2945-2

    Google Scholar 

  27. Sagan C, Thompson WR, Carlson R, Gurnett D, Hord C (1993) A search for life on Earth from the Galileo spacecraft. Nature 365:715

    Article  CAS  Google Scholar 

  28. Domagal-Goldman SD, Meadows VS, Claire MW, Kasting JF (2011) Using biogenic sulfur gases as remotely detectable biosignatures on anoxic planets. Astrobiology 11(5):419–441

    Article  CAS  Google Scholar 

  29. Lovelock JE (1975) Thermodynamics and the recognition of alien biospheres. Proc R Soc Lond B Biol Sci 189(1095):167–180

    Article  CAS  Google Scholar 

  30. Moskovitz NA, Gaidos E, Williams DM (2009) The effect of lunarlike satellites on the orbital infrared light curves of Earth-analog planets. Astrobiology 9(3):269–277

    Article  CAS  Google Scholar 

  31. Selsis F, Wordsworth RD, Forget F (2011) Thermal phase curves of nontransiting terrestrial exoplanets. I. Characterizing atmospheres. Astron Astrophys 532, id.A1

    Google Scholar 

  32. Traub WA (2003) The colors of extrasolar planets, scientific frontiers in research on extrasolar planets. ASP Conf Ser 294:595–602

    Google Scholar 

  33. Pierrehumbert R, Gaidos E (2011) Hydrogen greenhouse planets beyond the habitable zone. Astrophys J 734:13L

    Article  Google Scholar 

  34. Abe Y, Abe-Ouchi A, Sleep NH, Zahnle KJ (2011) Habitable zone limits for dry planets. Astrobiology 11(5):443–460

    Article  Google Scholar 

  35. Kasting JF, Whitmire DP, Reynolds H (1993) Habitable zones around main sequence Stars. Icarus 101:108–119

    Article  CAS  Google Scholar 

  36. Selsis F, Kasting JF, Levrard B, Paillet J, Ribas I, Delfosse X (2007) Habitable planets around the star Gliese 581? Astron Astrophys 476(3):1373

    Article  CAS  Google Scholar 

  37. Kaltenegger L, Sasselov D (2011) Exploring the habitable zone for Kepler planetary candidates. Astrophys J 736:L25

    Article  Google Scholar 

  38. Williams DM, Pollard D (2002) Earth-like worlds on eccentric orbits: excursions beyond the habitable zone. Int J Astrobiol 1:61

    Article  Google Scholar 

  39. Selsis F (2000) Review: physics of planets I: Darwin and the atmospheres of terrestrial planets. In: Darwin and astronomy – the infrared space interferometer’, Stockholm, 17–19 Nov 1999. ESA, Noordwijk, SP 451, pp 133–142

    Google Scholar 

  40. Segura A, Kasting JF, Meadows V, Cohen M, Scalo J, Crisp D, Butler RAH, Tinetti G (2005) Biosignatures from Earth-like planets around M Dwarfs. Astrobiology 5:706–725

    Article  CAS  Google Scholar 

  41. Segura A, Krelove K, Kasting JF, Sommerlatt D, Meadows V, Crisp D, Cohen M, Mlawer E (2003) Ozone concentrations and ultraviolet fluxes on Earth-like planets around other Stars. Astrobiology 3:689–708

    Article  CAS  Google Scholar 

  42. Grenfell JL, Stracke B, von Paris P, Patzer B, Titz R, Segura A, Rauer H (2007) The response of atmospheric chemistry on earthlike planets around F, G and K Stars to small variations in orbital distance. Planet Space Sci 55:661–671

    Article  CAS  Google Scholar 

  43. Kaltenegger L, Traub WA, Jucks KW (2007) Spectral evolution of an Earth-like planet. Astrophys J 658:598–616

    Article  CAS  Google Scholar 

  44. Kasting JF, Catling D (2003) Evolution of a habitable planet. Ann Rev Astron Astrophys 41:429

    Article  CAS  Google Scholar 

  45. Zahnle K et al (2007) Geology and habitability of terrestrial planets, space sciences series of ISSI, vol 24. ISBN 978-0-387-74287-8. Springer Science+Business Media, LLC, p 35

    Google Scholar 

  46. Sagan C, Mullen G (1972) Earth and mars: evolution of atmospheres and surface temperatures. Science 177:52

    Article  CAS  Google Scholar 

  47. Kasting JF, Siefert JL (2002) Life and the evolution of Earth’s atmosphere. Science 296:1066

    Article  CAS  Google Scholar 

  48. Pavlov AA, Kasting JF, Brown LL, Rages KA, Freedman R, Greenhouse R (2000) Greenhouse warming by CH4 in the atmosphere of early Earth. J Geophys Res 105:981–992

    Article  Google Scholar 

  49. Pavlov AA, Hurtgen MT, Kasting JF, Arthur MA (2003) Methane-rich proterozoic atmosphere? Geology 31(1):87

    Article  CAS  Google Scholar 

  50. Mischna MA, Kasting JF, Pavlov A, Freedman R (2000) Influence of carbon dioxide clouds on early martian climate. Icarus 145:546

    Article  CAS  Google Scholar 

  51. Holland R (2006) The oxygenation of the atmosphere and oceans. Philos Trans R Soc London B 361:903

    Article  CAS  Google Scholar 

  52. Meadows V (2006) Modelling the diversity of extrasolar terrestrial planets. In: Aime C, Vakili (eds) Proceedings of IAU colloquium 200, direct imaging of exoplanets: science and techniques, Cambridge University Press, Cambridge, 25

    Google Scholar 

  53. Kaltenegger L, Henning W, Sasselov D (2010) Characterizing volcano planets. Astrophys J 140(5):1370–1380

    CAS  Google Scholar 

  54. Kaltenegger L, Sasselov D (2010) Detecting planetary geochemical cycles on exoplanets: atmospheric signatures and the case of SO2. Astrophys J 708(2):1162–1167

    Article  CAS  Google Scholar 

  55. Woolf NJ, Smith PS, Traub WA, Jucks KW (2002) The spectrum of earthshine: a pale blue dot observed from the ground. Astrophys J 574:430–442

    Article  CAS  Google Scholar 

  56. Montanes-Rodriguez P, Palle E, Goode PR (2007) Measurements of the surface brightness of the earthshine with applications to calibrate lunar flashes. Astrophys J 134:1145–1149

    CAS  Google Scholar 

  57. Arnold L, Gillet S, Lardiere O, Riaud P, Schneider J (2002) A test for the search for life on extrasolar planets. Looking for the terrestrial vegetation signature in the earthshine spectrum. Astron Astrophys 392:231–237

    Article  CAS  Google Scholar 

  58. Cowan NB, Agol E, Meadows VS, Robinson T, Livengood TA, Deming D, Lisse CM, A’Hearn MF et al (2009) Alien maps of an ocean-bearing world. Astrophys J 700:915

    Article  Google Scholar 

  59. Livengood TA, Deming LD, A’Hearn MF, Charbonneau D, Hewagama T, Lisse CM, McFadden LA et al (2011) Properties of an Earth-like planet orbiting a sun-like Star: Earth observed by the EPOXI mission. Astrobiology 11:907

    Article  CAS  Google Scholar 

  60. Seager S, Turner EL, Schafer J, Ford EB (2005) Vegetation’s red edge: a possible spectroscopic biosignature of extraterrestrial plants. Astrobiology 5:372–390

    Article  CAS  Google Scholar 

  61. Kiang NY, Siefert J, Govindjee, Blankenship RE (2007) Spectral signatures of photosynthesis. I. Review of Earth organisms. Astrobiology 7(1):222–251

    Article  CAS  Google Scholar 

  62. Pallé E, Ford EB, Seager S, Montañés-Rodríguez P, Vazquez M (2008) Identifying the rotation rate and the presence of dynamic weather on extrasolar Earth-like planets from photometric observations. Astrophys J 676:1319–1329

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Lisa Kaltenegger .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2013 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

Kaltenegger, L. (2013). Planetary Atmospheres and Chemical Markers for Extraterrestrial Life. In: Smith, I., Cockell, C., Leach, S. (eds) Astrochemistry and Astrobiology. Physical Chemistry in Action. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31730-9_5

Download citation

Publish with us

Policies and ethics