Results 31 to 40 of about 39,453 (210)

Spectral features of Earth-like planets and their detectability at different orbital distances around F, G, and K-type stars

open access: yes, 2013
We investigate the spectral appearance of Earth-like exoplanets in the HZ of different main sequence stars at different orbital distances. We furthermore discuss for which of these scenarios biomarker absorption bands may be detected during primary or ...
Gebauer, Stefanie   +8 more
core   +7 more sources

THE CHANDRA X-RAY SURVEY OF PLANETARY NEBULAE (ChanPlaNS): PROBING BINARITY, MAGNETIC FIELDS, AND WIND COLLISIONS [PDF]

open access: yes, 2012
We present an overview of the initial results from the Chandra Planetary Nebula Survey (ChanPlaNS), the first systematic (volume-limited) Chandra X-Ray Observatory survey of planetary nebulae (PNe) in the solar neighborhood.
J. Kastner   +67 more
semanticscholar   +1 more source

Worlds Beyond: A Strategy for the Detection and Characterization of Exoplanets Executive Summary of a Report of the ExoPlanet Task Force Astronomy and Astrophysics Advisory Committee Washington, DC June 23, 2008 [PDF]

open access: yes, 2008
[No ...
Fischer, Debra   +15 more
core   +1 more source

Planetary Collisions: Electromagnetic Signals

open access: yes, 2003
We investigate the electromagnetic signals accompanied with planetary collisions and their event rate, and explore the possibility of directly detecting such events.
Sigurdsson, Steinn, Zhang, Bing
core   +1 more source

Transiting Exoplanet Survey Satellite (TESS) [PDF]

open access: yesAstronomical Telescopes and Instrumentation, 2014
The Transiting Exoplanet Survey Satellite (TESS ) will search for planets transiting bright and nearby stars. TESS has been selected by NASA for launch in 2017 as an Astrophysics Explorer mission. The spacecraft will be placed into a highly elliptical 13.
G. Ricker   +57 more
semanticscholar   +1 more source

Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy

open access: yes, 2009
Over 300 extrasolar planets have been found since 1992, showing that planetary systems are common and exhibit an outstanding variety of characteristics.
A. Eggenberger   +195 more
core   +2 more sources

A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b [PDF]

open access: yes, 2015
We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphere.
Kopparla, Pushkar   +5 more
core   +2 more sources

The Influence of Different Solar System Planetary Ephemerides on Pulsar Timing

open access: yesResearch in Astronomy and Astrophysics
Pulsar timing offers a comprehensive avenue for exploring diverse topics in physics and astrophysics. High-precision solar system planetary ephemeris is crucial for pulsar timing as it provides the positions and velocities of solar system planets ...
Jianpeng Dai, Wei Han, Na Wang
semanticscholar   +1 more source

Volatiles and refratories in solar analogs: no terrestial planet connection

open access: yes, 2010
We have analysed very high-quality HARPS and UVES spectra of 95 solar analogs, 24 hosting planets and 71 without detected planets, to search for any possible signature of terrestial planets in the chemical abundances of volatile and refractory elements ...
Elisa Delgado-Mena   +10 more
core   +1 more source

Novel Research in Astrophysics and Geophysics

open access: yesBOOK OF ABSTRACTS AND CONTRIBUTED PAPERS: Building bridges between climate science and society through a transdisciplinary network
In the past few decades innovative approach is to foster collaboration and effective synergies among disciplines such as space exploration, atmospheric and Earth observations, laboratory and field experiments, and numerical modeling, with a high ...
V. A. Srećković   +7 more
semanticscholar   +1 more source

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