التفاصيل البيبلوغرافية
| العنوان: |
Brightness temperature of synchronic exoplanets measured by infrared photometry from the ground: Method and perspective |
| المؤلفون: |
Sarkissian, Alain1 alain.sarkissian@latmos.ipsl.fr |
| المصدر: |
Infrared Physics & Technology. May2010, Vol. 53 Issue 3, p186-192. 7p. |
| مصطلحات موضوعية: |
*BRIGHTNESS temperature, *EXTRASOLAR planets, *INFRARED radiation, *PHOTOMETRY, *TEMPERATURE effect, *NUMERICAL analysis, *SIMULATION methods & models, *FEASIBILITY studies, *RADIATIVE transfer |
| مستخلص: |
Abstract: We explore a method to measure the temperature at the surface of “hot Jupiter” type exoplanets by relative photometry in the infrared at around 10μm in N spectral band. The method is described and validated by numerical simulations. Thermal radiation from an exoplanet and its parent star are analysed. Geometrical configurations of extra-solar planet rotating synchronously around parent star are explored for a feasibility study of the detection. A Jupiter size planet in orbit at 0.025 astronomical unit from Sun-like parent star should have a harmonic signature of up to 0.2% in amplitude with a period of the planets orbital duration. Such a signature is difficult to detect when making absolute measurements, but by differential methods of analyses, and using a radiative transfer model to take into account background sky contribution of the Earth’s atmosphere, this relative accuracy can be reached. Some results of simulations of observation are also presented. [Copyright &y& Elsevier] |
| قاعدة البيانات: |
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