1 / 29

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

kovit
Télécharger la présentation

Who’s Who on Emission Line Diagnostic Diagrams

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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...

More Related