'Wr stars' presentation slideshows

David H. Cohen Dept. of Physics and Astronomy Swarthmore College

X-ray Emission Line Profile Diagnostics of Hot Star Winds: Constraints on Kinematics, Geometry, and Opacity. David H. Cohen Dept. of Physics and Astronomy Swarthmore College much of this work was performed by Swarthmore seniors Roban Kramer and Stephanie Tonnesen. Outline.

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Lecture 10 Nucleosynthesis During Helium Burning and the s-Process

Lecture 10 Nucleosynthesis During Helium Burning and the s-Process. A. Thermodynamic Conditions (Massive Stars). For the most part covered previously ? He ~ 10 6 years (+- factor of three). n=3. need temperatures > 10 8 to provide significant energy generation by 3 ?.

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X-ray study of a nearby nuclear starburst and a nearby AGN

X-ray study of a nearby nuclear starburst and a nearby AGN. Roberto Soria ( UCL) Mat Page, Kinwah Wu, Alice Breeveld, Silvia Zane. Contents. M83 (grand-design spiral with nuclear starburst) diffuse emission discrete source populations

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eROSITA A new all- s ky X- ray Survey

736 views • 27 slides

HIGH ENERGY ASTROPHYSICS ?-ray emission from galactic radioactivity

HIGH ENERGY ASTROPHYSICS ?-ray emission from galactic radioactivity. Relevant radioactive nuclei for galactic ?-ray line emission : how and where they are synthesized: nucleosynthesis (hydrostatic and explosive), in stars interaction with cosmic rays, in the interstellar medium

430 views • 27 slides

Metallicity Dependent Wolf-Rayet winds?

Metallicity Dependent Wolf-Rayet winds?. PAUL CROWTHER. Introduction. Wolf-Rayet (WR) stars represent the final, pre-core collapse phase in the evolution of very massive stars;

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Nitrogen excess in starburst galaxies: chemical enrichment via winds of Wolf-Rayet stars?

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Multidimensional Diffusive Shock Acceleration in Winds from Massive Stars

Multidimensional Diffusive Shock Acceleration in Winds from Massive Stars. Paul P. Edmon University of Minnesota Collaborators: Tom Jones (U of M), Andrew Cunningham (LLNL), Adam Frank (U of R) 5 th Korean Astrophysics Workshop: Shock Waves Turbulence, and Particle Acceleration 11-19-09.

246 views • 15 slides

STUDYING NEBULAE EJECTED FROM MASSIVE STARS WITH HERSCHEL

325 views • 15 slides