Summary

An earth-system model has been applied to study the habitability of an earthlike planet in the solar system and in extrasolar planetary systems with a different mass and age of the central star. Habitability is defined by a nonvan-ishing biological productivity of a photosynthesis-driven biosphere. The most prominent features observed in this approach are the age-dependent narrowing and the final disappearance of the HZ. Furthermore, we studied the principle possibility of orbitally stable...

Info

Subaru HDS transmission spectroscopy of the transiting extrasolar planet HD 209458b, PASJ, 57, 705-705. Charbonneau, D., Allen, L. E., Megeath, S. T., Torres, G., Alonso, R., Brown, T. M., Gilliland, R. L., Latham, D. W., Mandu-shev, G., O'Donovan, F. T., and Sozzetti, A. 2005, Detection of thermal emission from an extrasolar planet, ApJ, 626, 523529. Deming, D., Brown, T. M., Charbonneau, D., Harrington, J., and Richardson, L. J. 2005, A new search for carbon monoxide absorption in the...

References

1 Struve, O. 1952, Proposal for a project of high-precision stellar radial velocity work, The Observatory, 72,199-200. 2 Rosenblatt, F. 1971, A two-color photometric method for detection of extra solar planetary systems, Icarus, 14, 71. 3 Borucki, W. J. and Summers, A. L. 1984, The photometric method of detecting other planetary systems, Icarus, 58,121134. 4 Deeg, H. J., Doyle, L. R., Kozhevnikov, V. P., Martin, E. L., Oetiker, B., Palaiolo-gou, E., Schneider, J., Afonso, C., Dunham, E. W.,...

Terrestrial Planet Finder Infrared TPFI

TPF-I will determine the planet's period, infrared brightness, amounts of life-related atmospheric gases (water vapor, ozone, carbon dioxide, methane, and nitrous oxide), and orbital distance, shape, and orientation. If the planet's atmosphere is transparent enough, TPF-I will determine the planet's length of day, ocean land ratio, and cloud variability. One TPF-I concept uses an array of four formation-flying, large, cooled telescopes (3 to 4 meters) flying in precise formation with...

Palomar Observatory

There are some planet-finding projects at Palomar Observatory. These include Sleuth, Single Telescope Extrasolar Planet Survey STEPS , and the Palomar Testbed Interferometer. Sleuth is a 10 cm, robotic telescope dedicated to search for gas-giant planets transiting a star. It nightly monitors about 10000 stars brighter than 12th visual magnitude in a six degree field of view. Sleuth is part of the Transatlantic Exoplanet Survey TrES network that includes Stellar Astrophysics and Research of...

The Global Carbon Cycle

The carbon cycle is the main process for the regulation of the atmospheric composition and climate with respect to increasing insolation. Walker et al. 17 , Berner 18 , Berner et al. 19 , Lasaga et al. 20 , von Bloh et al. 21 , and Franck et al. 22 as well as many others, investigated the so-called carbonate-silicate geochemical cycle between the atmosphere, the ocean, and the continents. The main feedback loop stabilizing the planetary climate is given by the silicate rock weathering. An...

Astrocentric Frame

Comparisons Between Coordinate Systems We have seen that, at least formally, the Poincare formalism is simpler and more compact than the Jacobi variables. But how does each perform in practice We have simulated the short-term orbital evolution of a co-planar system formed by a central star with m0 0.32M and two planets with masses m1 20MJup and m2 5MJup. Initial conditions were chosen such that both planets have circular orbits with semi-major axes a1 0.131 AU and a2 0.232 AU and are in...

Wleyvch

KGaA All books published by Wiley-VCH are carefully produced. Nevertheless, authors, editors, and publisher do not warrant the information contained in these books, including this book, to be free of errors. Readers are advised to keep in mind that statements, data, illustrations, procedural details or other items may inadvertently be inaccurate. Library of Congress Card No. applied for British Library Cataloguing-in-Publication Data A catalogue record for this...