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different stellar population properties 04.07.2018 Alina Bcker - PowerPoint PPT Presentation

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Credit: https://apod.nasa.gov/apod/ap140105.html Alina Bcker (MPIA) Ryan Leaman (MPIA), Glenn van de Ven (MPIA/ESO), Mark Norris (University of Central Lancashire), Rob Crain (API Liverpool) RECOVERING THE ACCRETION HISTORY OF GALAXIES FROM

  1. Credit: https://apod.nasa.gov/apod/ap140105.html Alina Böcker (MPIA) Ryan Leaman (MPIA), Glenn van de Ven (MPIA/ESO), Mark Norris (University of Central Lancashire), Rob Crain (API Liverpool) RECOVERING THE ACCRETION HISTORY OF GALAXIES FROM INTEGRATED SPECTRA

  2. 1. Ex-situ & in-situ stars have different stellar population properties 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  3. Global Galaxy Properties Mass-Metallicity Relation Kirby et al, 2013 Gallazzi et al, 2005 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  4. Global Galaxy Properties Internal Galaxy Properties 10 11 M ☉ 10 6 M ☉ Mass-Metallicity Relation Age-Metallicity Relation Kirby et al, 2013 Leaman et al, 2013 Gallazzi et al, 2005 Boecker et al, in prep. 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  5. 2. Obtain mass distribution in age-metallicity space from a single integrated spectrum 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  6. EAGLE Simulation M * ≈ 10 12 M ☉ All Stars 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  7. EAGLE Simulation M * ≈ 10 12 M ☉ All Stars 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  8. EAGLE Simulation M * ≈ 10 12 M ☉ All Stars 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  9. True mass distribution in age metallicity space 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  10. True mass distribution in age metallicity space Integrated mock spectrum 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  11. True mass distribution in age metallicity space Integrated mock spectrum Full Spectral Fitting (pPXF) + Optimized Regularization 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  12. True mass distribution in age metallicity space Integrated mock spectrum Full Spectral Fitting (pPXF) + Optimized Regularization Recovered mass distribution in age metallicity space 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  13. 3. Create a galaxy’s accreted satellite mass function with mass-dependent age- metallicity relations 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  14. Mass-dependent Age-Metallicity Templates 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  15. Mass-dependent Age-Metallicity Templates 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  16. Mass-dependent Accreted Satellite Mass Age-Metallicity Templates Function 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  17. 10 6 Mass-dependent Accreted Satellite Mass Age-Metallicity Templates Function 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  18. 10 7 Mass-dependent Accreted Satellite Mass Age-Metallicity Templates Function 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  19. 10 8 Mass-dependent Accreted Satellite Mass Age-Metallicity Templates Function 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  20. Internal Galaxy Properties Accreted Satellite Mass Function Boecker et al, in prep. 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  21. Internal Galaxy Properties Global Galaxy Properties Illustris Simulation Total Accretion Fraction Accreted Satellite Mass Function Ex-Situ Fraction vs. Total Stellar Mass Rodriguez-Gomez et al, 2016 Boecker et al, in prep. 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

  22. 4. Novel method for deriving a galaxy’s accretion history from its integrated spectrum 04.07.2018 Alina Böcker (MPIA) Stellar Halos Conference, Heidelberg

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