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 # Notes premier module
 
-Liens syntaxe markdown: [https://enacit.epfl.ch/cours/markdown-pandoc/](https://enacit.epfl.ch/cours/markdown-pandoc/)
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+Liens syntaxe markdown: [https://enacit.epfl.ch/cours/markdown-pandoc/](https://enacit.epfl.ch/cours/markdown-pandoc/)
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+# 1 À propos du calcul de $\pi$ 
+
+# 1.1 En demandant à la lib maths
+
+Mon ordinateur m’indique que $\pi$ vaut *approximativement*
+
+## 1.2 En utilisant la méthode des aiguilles de Buffon
+
+Mais calculé avec la **méthode** des <span style="color: blue;">aiguilles de Buffon</span>, on obtiendrait comme **approximation** :
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+# Articles read:
+
+## Young stellar system:
+- Accretion onto Pre-Main-Sequence Stars, 2016, Lee Hartmann, Gregory Herczeg, and Nuria Calvet
+- Magnetospheric Accretion in Classical T Tauri Stars, 2006 J. Bouvier, S. H. P. Alencar, T. J. Harries, C. M. Johns-Krull, M. M. Romanova
+- X-ray Properties of Young Stars and Stellar Clusters,2006, Eric Feigelson and Leisa Townsley
+- T TAURI STARS: WILD AS DUST, 1989, Claude Bertout
+
+## EVE:
+- 3D model of hydrogen atmospheric escape from HD 209458b and HD 189733b: radiative blow-out and stellar wind interactions V. Bourrier and A. Lecavelier des Etangs
+- Radiative braking in the extended exosphere of GJ 436 b V. Bourrier, D. Ehrenreich, and A. Lecavelier des Etangs
+- An evaporating planet in the wind: stellar wind interactions with the radiatively braked exosphere of GJ 436 b V. Bourrier, A. Lecavelier des Etangs, D. Ehrenreich, Y. A. Tanaka and A. A. Vidotto
+- Spectrally resolved helium absorption from the extended atmosphere of a warm Neptune-mass exoplanet, 2018, R. Allart
+
+## Escape:
+- Atmospheric Escape Processes and Planetary Atmospheric Evolution,2020, G. Gronoff
+- Modelling the He i triplet absorption at 10830 Å in the atmosphere of HD 209458 b, 2020, M. Lampón
+- Stellar wind effects on the atmospheres of close-in giants: a possible reduction in escape instead of increased erosion, 2020 A. A. Vidotto
+
+
+# Articles not read:
+
+## Escape:
+- Atmospheric Escape and the Evolution of Close-In Exoplanets, 2019 James E. Owen
+- articles byKristina G. Kislyakova from 2014
+- articles by Beust, FEB models
+- The beta pictoris circumstellaire disk. Numerical simulations of infalling evaporating bodies, 1990, Beust H
+- Planets of β Pictoris revisited, 2018, Florian Freistetter
+- Possible spectral lines from the gaseous β Pictoris disk, 1999, A. Lecavelier des Etangs
+
+## Young stellar system:
+- Modeling T Tauri Winds from He I λ10830 Profiles, 2006, John Kwan
+- REDSHIFTED ABSORPTION AT HE I λ10830 AS A PROBE OF THE ACCRETION GEOMETRY OF T TAURI STARS, 2008, William Fischer
+- The Dispersal of Protoplanetary Disks, 2013, Richard Alexander
+- The Circumstellar Environments of Young Stars at AU Scales Rafael Millan-Gabet
+- Disk-Planet Interactions During Planet Formation J. C. B. Papaloizou
+- Accretion, Outflows, and Winds of Magnetized Stars, 2016, Marina M. Romanova
+- Ms Dougados review on outflows
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