- Detectability of planetary characteristics in disk-averaged spectra. I: The Earth modelGiovanna Tinetti
NASA Astrobiology Institute, Pasadena, California, USA
Astrobiology 6:34-47. 2006..CH4, N2O, CO2, O3, and H2O are visible in the near-infrared (1-5 microm). A comprehensive three-dimensional model of the Earth is needed to produce a good fit with the observations...
- Characterizing extrasolar terrestrial planets with reflected, emitted and transmitted spectraGiovanna Tinetti
European Space Agency, Institut d Astrophysique de Paris, IAP Section Planètes extra solaires, 98 bis boulevard Arago, 75014 Paris, France
Orig Life Evol Biosph 36:541-7. 2006..Marine vegetation is far more difficult to detect. We explored also the detectability of an exo-vegetation responsible for producing a signature that is red-shifted with respect to the Earth vegetation's one...
- Detectability of planetary characteristics in disk-averaged spectra II: synthetic spectra and light-curves of earthGiovanna Tinetti
NASA Astrobiology Institute, California Institute of Technology, Pasadena, USA
Astrobiology 6:881-900. 2006..The detectability of phytoplankton was also explored, but was found to be more difficult to detect in the disk-average than land vegetation...
- Disk-averaged synthetic spectra of MarsGiovanna Tinetti
NASA Astrobiology Institute, National Research Council, California Institute of Technology, Pasadena, California 91125, USA
Astrobiology 5:461-82. 2005..We also considered the differences in the spectral appearance of an increasingly ice-covered Mars, as a function of spectral resolution, signal-to-noise and integration time for both TPF-C and TPFI/ Darwin...
- Biosignatures from Earth-like planets around M dwarfsAntigona Segura
Infrared Processing and Analysis Center, California Institute of Technology, Pasadena, CA 91125, USA
Astrobiology 5:706-25. 2005..The simultaneous detection of O2 (or O3) and a reduced gas in a planet's atmosphere has been suggested as strong evidence for life. Planets circling M stars may be good locations to search for such evidence...
- Spectral signatures of photosynthesis. II. Coevolution with other stars and the atmosphere on extrasolar worldsNancy Y Kiang
NASA Goddard Institute for Space Studies, New York, New York 10025, USA
Astrobiology 7:252-74. 2007..1 microm for anoxygenic photosynthesis. Under water, organisms would still be able to survive ultraviolet flares from young M stars and acquire adequate light for growth...
- Water vapour in the atmosphere of a transiting extrasolar planetGiovanna Tinetti
European Space Agency, Frascati 00044, Italy
Nature 448:169-71. 2007..We explain the report of a non-detection of water on HD 189733b (ref. 4) as being a consequence of the nearly isothermal vertical profile of the planet's atmosphere...