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Lessons from the Sun: a G2 Dwarf Star in the Disk of the Milky Way

Lessons from the Sun: a G2 Dwarf Star in the Disk of the Milky Way. Carlos Allende Prieto McDonald Observatory Univ. of Texas at Austin. Introduction The Sun as a Physics laboratory: - neutrinos and seismology - relativity - atomic data

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Lessons from the Sun: a G2 Dwarf Star in the Disk of the Milky Way

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  1. Lessons from the Sun: a G2 Dwarf Star in the Disk of the Milky Way Carlos Allende Prieto McDonald Observatory Univ. of Texas at Austin

  2. Introduction The Sun as a Physics laboratory: - neutrinos and seismology - relativity - atomic data The solar spectrum as a test of opacity calculations The solar spectrum as a test of collisional excitation cross-sections IV. Is the Sun truly a typical disk dwarf? V. West-Texas Observations of the ‘solar spectrum’ Sketch

  3. I. The Sun as a Physics Laboratory • Neutrinos • Seismology • Relativity • Atomic Data

  4. neutrinos

  5. helioseismology

  6. Helioseismic networks BiSON network

  7. The Solar Spectrum asa test of opacities

  8. The Solar Spectrum as a test of collisional excitation cross-sections

  9. Is the solar a typical G2 dwarf in the galactic disk? PS Barklem (Uppsala) DL Lambert (UT Austin) K Cunha (ON Brazil) 118 stars : all stars more luminous than Mv=6.5 mag Within 15 pc (~ 45 years-light) from the Sun

  10. West-Texas solar observations

  11. hrs

  12. Solar granulation and sunspots

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