Organization:Virtual Planetary Laboratory

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Virtual Planetary Laboratory
AbbreviationVPL
Formation2001
Legal statusActive
PurposeTo detect exoplanetary habitability and their potential biosignatures.
Parent organization
NASA
WebsiteThe Virtual Planetary Laboratory

The Virtual Planetary Laboratory (VPL) is a virtual institute based at the University of Washington that studies how to detect exoplanetary habitability and their potential biosignatures. First formed in 2001, the VPL is part of the NASA Astrobiology Institute (NAI) and connects more than fifty researchers at twenty institutions together in an interdisciplinary effort. VPL is also part of the Nexus for Exoplanet System Science (NExSS) network, with principal investigator Victoria Meadows leading the NExSS VPL team.[1][2]

Research

Task A: Solar System Analogs for Extrasolar Planet Observations

The first task considers observations of the Solar System planets, moons, and the asteroid belt to explore processes necessary for habitable environments and for exoplanet model confirmation. Specifically, observations of Europa,[3] Venus,[4] Earth,[5] Mars, and the asteroid belt have helped researchers in Task A address their goals.

Task B: The Earth Through Time

Our only data point of a habitable planet today is Earth, although it has not always been habitable. The Early Earth serves as an example of an exoplanet. The VPL research has contributed to the understanding of our early planet. Task B combines geological and biological data[6] with ecosystem[7] and photo-chemical models[8][9] to showcase how planet Earth has changed throughout its history.

Task C: The Habitable Planet

This task uses observational data, models and orbital dynamics to explore the distribution of habitable worlds in the universe. The VPL team studies the effects of galactic,[10] stellar,[11] and planetary environments[12] on planetary habitability.

Task D: The Living Planet

Task D incorporates VPL researchers from diverse and interdisciplinary fields who use laboratory work[13][14] combined with chemical and climate models to study the impact of life on its environment. In addition, the interactions between the biosphere, planet, and host star are explored to determine how they can influence detectable biosignatures.[15]

Task E: The Observer

In the final task, the VPL scientists observe the Solar System and extrasolar planets. The goal of this task is to develop astronomical[16] and remote-sensing retrieval methods. In addition, VPL members use telescope and instrument simulators to study which measurements, observing strategies, and analysis techniques are necessary for the characterization of exoplanets.[17]

Models

1D Radiative Convective and Photochemical Models

Solar Flux Model

Habitable Zone Calculator

Education & Outreach

Students

Teachers

VPL in the News

February 2017 - Early Earth as a proxy for hazy exoplanets

August 2016 - Is Proxima Centauri b habitable?[18][19]

See also

References

  1. ↑ Impey, Chris (2010). Talking about Life: Conversations on Astrobiology. Cambridge University Press. pp. 293-302. ISBN:9781139490634.
  2. ↑ Kelley, Peter (April 22, 2015). "UW key player in new NASA coalition to search for life on distant worlds." UW News. Retrieved May 4, 2015.
  3. ↑ Robinson, Tyler D. (January 1, 2011). "Modeling the Infrared Spectrum of the Earth-Moon System: Implications for the Detection and Characterization of Earthlike Extrasolar Planets and Their Moonlike Companions". The Astrophysical Journal 741 (1): 51. doi:10.1088/0004-637X/741/1/51. Bibcode: 2011ApJ...741...51R. http://stacks.iop.org/0004-637X/741/i=1/a=51. 
  4. ↑ Arney, Giada; Meadows, Victoria; Crisp, David; Schmidt, Sarah J.; Bailey, Jeremy; Robinson, Tyler (August 1, 2014). "Spatially resolved measurements of H2O, HCl, CO, OCS, SO2, cloud opacity, and acid concentration in the Venus near-infrared spectral windows". Journal of Geophysical Research: Planets 119 (8): 2014JE004662. doi:10.1002/2014JE004662. Bibcode: 2014JGRE..119.1860A. 
  5. ↑ Robinson, Tyler D.; Meadows, Victoria S.; Crisp, David; Deming, Drake; A'Hearn, Michael F.; Charbonneau, David; Livengood, Timothy A.; Seager, Sara et al. (2011). "Earth as an Extrasolar Planet: Earth Model Validation Using EPOXI Earth Observations". Astrobiology 11 (5): 393–408. doi:10.1089/ast.2011.0642. PMID 21631250. Bibcode: 2011AsBio..11..393R. 
  6. ↑ Claire, M. W.; Catling, D. C.; Zahnle, K. J. (December 1, 2006). "Biogeochemical modelling of the rise in atmospheric oxygen". Geobiology 4 (4): 239–269. doi:10.1111/j.1472-4669.2006.00084.x. Bibcode: 2006Gbio....4..239C. 
  7. ↑ Roberson, A. L.; Roadt, J.; Halevy, I.; Kasting, J. F. (July 1, 2011). "Greenhouse warming by nitrous oxide and methane in the Proterozoic Eon". Geobiology 9 (4): 313–320. doi:10.1111/j.1472-4669.2011.00286.x. PMID 21682839. Bibcode: 2011Gbio....9..313R. 
  8. ↑ Zerkle, Aubrey L.; Claire, Mark W.; Domagal-Goldman, Shawn D.; Farquhar, James; Poulton, Simon W. (May 1, 2012). "A bistable organic-rich atmosphere on the Neoarchaean Earth". Nature Geoscience 5 (5): 359–363. doi:10.1038/ngeo1425. Bibcode: 2012NatGe...5..359Z. 
  9. ↑ Claire, Mark W.; Kasting, James F.; Domagal-Goldman, Shawn D.; Stüeken, Eva E.; Buick, Roger; Meadows, Victoria S. (September 15, 2014). "Modeling the signature of sulfur mass-independent fractionation produced in the Archean atmosphere". Geochimica et Cosmochimica Acta 141: 365–380. doi:10.1016/j.gca.2014.06.032. Bibcode: 2014GeCoA.141..365C. https://research-repository.st-andrews.ac.uk/bitstream/10023/5098/2/Claire2014GCA_SMIFmodel.pdf. 
  10. ↑ Kaib, Nathan A.; Raymond, Sean N.; Duncan, Martin (January 17, 2013). "Planetary system disruption by Galactic perturbations to wide binary stars". Nature 493 (7432): 381–384. doi:10.1038/nature11780. PMID 23292514. Bibcode: 2013Natur.493..381K. 
  11. ↑ Segura, Antígona; Walkowicz, Lucianne M.; Meadows, Victoria; Kasting, James; Hawley, Suzanne (September 1, 2010). "The Effect of a Strong Stellar Flare on the Atmospheric Chemistry of an Earth-like Planet Orbiting an M Dwarf". Astrobiology 10 (7): 751–771. doi:10.1089/ast.2009.0376. PMID 20879863. Bibcode: 2010AsBio..10..751S. 
  12. ↑ Kopparapu, R. K.; Raymond, S. N.; Barnes, R. (2009). "Stability of Additional Planets in and Around the Habitable Zone of the HD 47186 Planetary System". The Astrophysical Journal Letters 695 (2): L181–L184. doi:10.1088/0004-637x/695/2/l181. Bibcode: 2009ApJ...695L.181K. 
  13. ↑ Anderson, Rika E.; Sogin, Mitchell L.; Baross, John A. (January 1, 2015). "Biogeography and ecology of the rare and abundant microbial lineages in deep-sea hydrothermal vents". FEMS Microbiology Ecology 91 (1): 1–11. doi:10.1093/femsec/fiu016. PMID 25764538. 
  14. ↑ Breitbart, Mya; Hoare, Ana; Nitti, Anthony; Siefert, Janet; Haynes, Matthew; Dinsdale, Elizabeth; Edwards, Robert; Souza, Valeria et al. (January 1, 2009). "Metagenomic and stable isotopic analyses of modern freshwater microbialites in Cuatro Ciénegas, Mexico". Environmental Microbiology 11 (1): 16–34. doi:10.1111/j.1462-2920.2008.01725.x. PMID 18764874. Bibcode: 2009EnvMi..11...16B. 
  15. ↑ Domagal-Goldman, Shawn D.; Meadows, Victoria S.; Claire, Mark W.; Kasting, James F. (June 1, 2011). "Using biogenic sulfur gases as remotely detectable biosignatures on anoxic planets". Astrobiology 11 (5): 419–441. doi:10.1089/ast.2010.0509. PMID 21663401. Bibcode: 2011AsBio..11..419D. 
  16. ↑ Schwieterman, Edward W.; Meadows, Victoria S.; Domagal-Goldman, Shawn D.; Deming, Drake; Arney, Giada N.; Luger, Rodrigo; Harman, Chester E.; Misra, Amit et al. (January 1, 2016). "Identifying Planetary Biosignature Impostors: Spectral Features of CO and O4 Resulting from Abiotic O2/O3 Production". The Astrophysical Journal Letters 819 (1): L13. doi:10.3847/2041-8205/819/1/L13. PMID 30147857. Bibcode: 2016ApJ...819L..13S. 
  17. ↑ Luger, Rodrigo (March 12, 2017). "A terrestrial-sized exoplanet at the snow line of TRAPPIST-1". Nature Astronomy 1 (6): 0129. doi:10.1038/s41550-017-0129. Bibcode: 2017NatAs...1E.129L. 
  18. ↑ Meadows, V. S. et al. (August 30, 2016). "The Habitability of Proxima Centauri b: II: Environmental States and Observational Discriminants". Astrobiology 18 (2): 133–189. doi:10.1089/ast.2016.1589. PMID 29431479. Bibcode: 2018AsBio..18..133M. 
  19. ↑ "The Habitability of Proxima Centauri b I: Evolutionary Scenarios". August 24, 2016. arXiv:1608.06919 [astro-ph.EP].

External links



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