Characterization of terrestrial planets identified by the Kepler mission

2008 ◽  
Vol T130 ◽  
pp. 014034 ◽  
Author(s):  
David W Latham
Keyword(s):  
Terrestrial Planets ◽  
Kepler Mission

Systems engineering for the Kepler Mission: a search for terrestrial planets

2004 ◽  
Author(s):  
Riley M. Duren ◽  
Karen Dragon ◽  
Stephen Z. Gunter ◽  
Thomas N. Gautier ◽  
Eric Bachtell ◽  
...  
Keyword(s):  
Systems Engineering ◽  
Terrestrial Planets ◽  
Kepler Mission

scholarly journals Characterization of extrasolar terrestrial planets from diurnal photometric variability

Nature ◽  
2001 ◽  
Vol 412 (6850) ◽  
pp. 885-887 ◽  
Author(s):  
E. B. Ford ◽  
S. Seager ◽  
E. L. Turner
Keyword(s):  
Terrestrial Planets ◽  
Photometric Variability

Asteroseismic Data Analysis

2017 ◽  
Author(s):  
Sarbani Basu ◽  
William J. Chaplin
Keyword(s):  
Time Series ◽  
Data Analysis ◽  
Seismic Data ◽  
Stellar Populations ◽  
Instruction Manual ◽  
Kepler Mission ◽  
Cool Stars ◽  
Internal Properties ◽  
Analysis Of Time Series

Studies of stars and stellar populations, and the discovery and characterization of exoplanets, are being revolutionized by new satellite and telescope observations of unprecedented quality and scope. Some of the most significant advances have been in the field of asteroseismology, the study of stars by observation of their oscillations. This book gives a comprehensive technical introduction to this discipline. It not only helps students and researchers learn about asteroseismology; it also serves as an essential instruction manual for those entering the field. The book presents readers with the foundational techniques used in the analysis and interpretation of asteroseismic data on cool stars that show solar-like oscillations. The techniques have been refined, and in some cases developed, to analyze asteroseismic data collected by the NASA Kepler mission. Topics range from the analysis of time-series observations to extract seismic data for stars to the use of those data to determine global and internal properties of the stars. Reading lists and problem sets are provided, and data necessary for the problem sets are available online.

Steps towards eta-Earth, from Kepler data

2014 ◽  
Vol 14 (3) ◽  
pp. 359-363 ◽  
Author(s):  
Wesley A. Traub
Keyword(s):  
Region Of Interest ◽  
Analytical Form ◽  
Terrestrial Planets ◽  
Model Parameters ◽  
Habitable Zone ◽  
Underlying Distribution ◽  
Habitable Zones ◽  
Kepler Mission ◽  
Instrument Noise ◽  
Minimal Bias

AbstractThe goal of this paper is to take steps towards estimating the frequency of terrestrial planets in the habitable zones of their host stars, using planet counts from the Kepler mission. The method is to assume that an analytical form for the underlying distribution function, numerically simulate the observing procedure, compare the simulated and real observations, and iterate the model parameters to achieve convergence in the sense of least-squares. The underlying distribution can then be extrapolated to a region of interest, here the terrestrial habitable-zone range. In this regime (small radii, long periods), the instrument noise makes such detections essentially impossible below a fairly sharply defined threshold signal level. This threshold can be estimated from the existing data. By taking this cutoff into account, the distribution of planets, as a function of radius and period, can be estimated with minimal bias. Extending this distribution to terrestrial planets in habitable-zone orbits can yield an estimate of eta-sub-Earth.

Impact-induced hydrothermal dissolution in pyroxene: Petrographic and geochemical characterization of basalt-dominated polymict impact breccias from the Vargeão Dome, Brazil

2021 ◽  
Author(s):  
Jennifer Epstein ◽  
Lidia Pittarello ◽  
Álvaro P. Crósta ◽  
Christian Koeberl
Keyword(s):  
Hydrothermal Alteration ◽  
Hydrothermal Fluids ◽  
Terrestrial Planets ◽  
Impact Structure ◽  
Impact Event ◽  
Southern Brazil ◽  
Geochemical Characterization ◽  
Heterogeneous Nature ◽  
The Impact

ABSTRACT Constraints on impact-related hydrothermal alteration are important to enable the reconstruction of the possible processes affecting the surface of other terrestrial planets, such as Mars. Terrestrial impact structures excavated in basaltic targets provide the opportunity for analog studies. In Brazil, seven impact structures have been confirmed so far. Three of them, Vargeão Dome, Vista Alegre, and Cerro do Jarau, were formed in the same basaltic province belonging to the Paraná Basin, and they have several common characteristics. Oxidized basaltic breccias locally containing sandstone clasts occur in all these structures. In this work, selected samples of such breccias from the Vargeão Dome impact structure in southern Brazil were petrographically and geochemically investigated to further constrain the effects of the postimpact hydrothermal alteration. The breccia matrix shows typical oxidation effects induced by postimpact hydrothermal fluids, which highlight its heterogeneous nature, related to the impact event, and mixing components from different pre-impact stratigraphic formations. The detection of partially dissolved exsolution lamellae in pyroxene and of related alteration products constrains the effects of hydrothermal alteration in the basalts of the Vargeão Dome, which could serve as a terrestrial analog for planetary studies.

scholarly journals The Virtual Planetary Laboratory: Towards Characterization of Extrasolar Terrestrial Planets

2004 ◽  
Vol 213 ◽  
pp. 129-138
Author(s):  
Victoria Meadows ◽  
David Crisp
Keyword(s):  
Extrasolar Planets ◽  
Terrestrial Planet ◽  
Remotely Sensed ◽  
Search Strategies ◽  
Early Earth ◽  
Terrestrial Planets ◽  
Research Project ◽  
Modeling Tools ◽  
Remotely Sense

NASA and ESA are currently undertaking mission studies for space-based observatories designed to search for life on other worlds. To optimize the designs of these missions, and to ultimately interpret the data sent back by them, we need to recognize habitable worlds and to discriminate between planets with and without life based only on remotely-sensed information. This paper provides an overview of the characteristics we would look for on an extrasolar terrestrial planet that might indicate habitability or the presence of life. It also describes a new NASA Astrobiology Institute research project to develop an innovative suite of modeling tools to simulate the environments and spectra of extrasolar planets. These modeling tools will constitute a Virtual Planetary Laboratory, which will be used to explore the plausible range of atmospheric compositions and globally-averaged spectra for early Earth and for plausible terrestrial planets both with and without life. Products of this research will provide an improved basis for recommending spacecraft and instrument characteristics, as well as search strategies required to remotely sense the signs of life in the atmosphere or on the surface of another world.

The Kepler Mission: A wide-field transit search for terrestrial planets

2005 ◽  
Vol 49 (7-9) ◽  
pp. 478-485 ◽  
Author(s):  
Gibor Basri ◽  
William J. Borucki ◽  
David Koch
Keyword(s):  
Terrestrial Planets ◽  
Wide Field ◽  
Kepler Mission
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