Who

1
Whos 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 IAGBarcelona
• Juan Pablo Papaqui UFSCINAOE
• Veterans
• Laerte Sodre IAG
• Grazyna Stasynska Meudon
• RCF UFSC

3
This talk
Data 573141 (DR5) SDSS galaxies (spectra
images) ÅbyÅ 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 Properti
es?
Zgas N/O

• Forbidden lines Thermometers ltk Tegt
• In Starbursts Te gt Zgas
• In AGN Te gt lthngtAGN Zgas ...

11
Dissecting galaxy spectra stars gas
HII
SFH(t)
Galaxy Properties M SFR(t) SSFR(t) s AV ltlog
tgt ltZgt ...
Emission lines NII/Ha OIII/Hb OI/Ha SII/H
a OII/OIII ...
Sey 2
LINER
Information on
12
Physical Properties Stellar Mass log M
HII lt Sey 2 lt LINERs
log MO
13
Physical Properties vel-disp s (MBH)1/4
Sey 2 lt LINERs
km / s
14
Physical Properties Mean Age ltlog tgt
HII lt Sey 2 lt LINERs
log yr
15
Physical Properties Metallicity ltZgt
HII lt Sey 2 lt LINERs
log ZO
16
Physical Properties a/Fe a-enhancement
Sey 2 lt LINERs
DMg
17
Physical Properties Dust extinction AV
Sey 2 gt LINERs
mag
18
Physical Properties AGN Power LOIII
Sey 2 gt LINERs
log LO
19
Physical Properties SF Power SFR
Sey 2 gt LINERs
MO/yr
20
Physical Properties log LOIII / MBH
Sey 2 gt LINERs
Eddington ratio
log LO/MO
21
Physical Properties log SSFR(tlt100Myr)
Sey 2 gt LINERs
log yr-1
22
Physical Properties Evolution!!
23
gaivota cubista / esquartejada
z 0.07 Mass 0
24
z 0.07 Mass 25
25
z 0.07 Mass 50
26
z 0.07 Mass 75
27
z 0.07 Mass 100
28
Conclusions
www.starlight.ufsc.br

• The SF wing ... ... Natalia s talk ?
• AGN Several interesting Sey 2 ? LINER trends
• SFR-AGN power scalings...

dust age Z M a/Fe LAGN SFR
Sey 2 gt lt lt lt lt gt gt LINER
So what ?? We don t know (yet)! Watch this
space...
29
(No Transcript)