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Who’s Who on Emission Line Diagnostic Diagrams

Who’s Who on Emission Line Diagnostic Diagrams. A journey through the SDSS + STARLIGHT databases. www.starlight.ufsc.br. The SEAGal collaboration ( S emi E mpirical A nalysis of Gal axies). Students: Jean Michel Gomes UFSC Marielli Schlickmann UFSC Natalia Asari UFSC

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Who’s Who on Emission Line Diagnostic Diagrams

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  1. Who’s Who on Emission Line Diagnostic Diagrams A journey through the SDSS + STARLIGHT databases www.starlight.ufsc.br

  2. The SEAGal collaboration(Semi Empirical Analysis of Galaxies) • Students: • Jean Michel Gomes UFSC • Marielli Schlickmann UFSC • Natalia Asari UFSC • William Schoenell UFSC • Pos-Docs: Abilio Mateus IAG+Barcelona • Juan Pablo Papaqui UFSC+INAOE • “Veterans”: • Laerte Sodre IAG • Grazyna Stasynska Meudon • RCF UFSC

  3. This talk Data:573141 (DR5) SDSS galaxies (spectra + images) Å–by–Å STARLIGHT fits Emission lines Physical properties & Star Formation Histories Goal:Explore how galaxy properties vary accross Diagnostic Diagrams: ~ “Reverse engineering” !! ALL AVAILABLE 4 YOU !! www.starlight.ufsc.br

  4. Galaxy spectra: stars + gas + dust + ... • Stellar population mix – Star Formation History (SFH) • Gas propeties – ionizing source: stars x AGN • Kinematics & Dust – s*, AV Information on:

  5. Diagnostic Diagrams: History 1981 Baldwin, Phillips & Terlevich = BPT! PNe AGN HII

  6. Diagnostic Diagrams: History 1987 Veilleux & Osterbrock

  7. Diagnostic Diagrams: History 2000 Veron-Cetty & Veron

  8. Diagnostic Diagrams: History 2001 Kewley et al

  9. Diagnostic Diagrams: History 2003 Kauffmann et al The SDSS revolution

  10. Diagnostic Diagrams: Gas physics LAGN? U? AGN/SB? MBH? Zgas? N/O? Galaxy Properties? Zgas & N/O • [Forbidden lines] ~ Thermometers: <k Te> • In Starbursts: Te => Zgas • In AGN: Te => <hn>AGN & Zgas & ...

  11. Dissecting galaxy spectra: stars + gas HII SFH(t) Galaxy Properties M* SFR(t) SSFR(t) s* AV <log t*> <Z*> ... Emission lines [NII]/Ha [OIII]/Hb [OI]/Ha [SII]/Ha [OII]/[OIII] ... Sey 2 LINER Information on:

  12. Physical Properties: Stellar Mass log M* HII < Sey 2 < LINERs log MO

  13. Physical Properties: vel-disp s* ~ (MBH)1/4 Sey 2 < LINERs km / s

  14. Physical Properties: Mean Age <log t*> HII < Sey 2 < LINERs log yr

  15. Physical Properties: Metallicity <Z*> HII < Sey 2 < LINERs log ZO

  16. Physical Properties: a/Fe “a-enhancement” Sey 2 < LINERs DMg

  17. Physical Properties: Dust extinction AV Sey 2 > LINERs mag

  18. Physical Properties: AGN Power L[OIII] Sey 2 > LINERs log LO

  19. Physical Properties: SF Power SFR Sey 2 > LINERs MO/yr

  20. Physical Properties: log L[OIII] / MBH Sey 2 > LINERs “Eddington ratio” log LO/MO

  21. Physical Properties: log SSFR(t<100Myr) Sey 2 > LINERs log yr-1

  22. Physical Properties: Evolution!!

  23. log [OIII] / Hb log [NII] / Ha gaivota cubista / esquartejada z = 0.07 Mass = 0%

  24. log [OIII] / Hb log [NII] / Ha z = 0.07 Mass = 25%

  25. log [OIII] / Hb log [NII] / Ha z = 0.07 Mass = 50%

  26. log [OIII] / Hb log [NII] / Ha z = 0.07 Mass = 75%

  27. log [OIII] / Hb log [NII] / Ha z = 0.07 Mass = 100%

  28. log [OIII] / Hb log [NII] / Ha www.starlight.ufsc.br Conclusions • The SF wing: ... ... Natalia’ s talk  • AGN: Several interesting Sey 2  LINER trends: • + SFR-AGN power scalings... ¿¿ So what ?? We don’ t know (yet)! Watch this space...

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