open questions in agn research hagai netzer, tel aviv university metallicity at all z the iron...
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Open QuestionsOpen Questionsin in
AGN ResearchAGN ResearchHagai Netzer, Tel Aviv UniversityHagai Netzer, Tel Aviv University
Metallicity at all zMetallicity at all z
The iron sagaThe iron saga
The AGN starburst connectionThe AGN starburst connection
The unfinished listThe unfinished list
Metallicity at all zMetallicity at all z
NVGary Ferland
Fred Hamann
Roberto Maiolino
Stephanie Komossa
Ohad Shemmer
Hagai Netzer
The obsessed
Z-L Z-MBH
Metallicity, Luminosity and Mass Metallicity, Luminosity and Mass relationshipsrelationships
Hamann and Ferland 1993, 1999 and collaborators
Shemmer and Netzer 2002
(NLS1s spoil the Z-L correlation)
Accretion rate and metallicityAccretion rate and metallicity
Shemmer, Netzer, Maiolino .. 2004
Z=5
Z=1
The iron sagaThe iron saga
Freudling et al. 2003
Bev Wills
Gary Ferland
Fred Hamann
Dan Maoz
Hagai Netzer
……..
The obsessed
The obsessedFeII lines in intermediate z QSOs
Wills, Netzer, Wills 1985
Present day models cannot tell whether the FeII line intensities reflect the iron
abundance, the gas density and optical depth or, perhaps, some other unknown
factors
Netzer and Wills 1983
Wills, Netzer, Wills 1985
Verner et al. 1999
Baldwin et al 2004
Mass metallicity and accretion rate Mass metallicity and accretion rate at low zat low z
The Sloan Digital The Sloan Digital Sky Survey (SDSS)Sky Survey (SDSS)– 13,000 type-I AGN 13,000 type-I AGN
up to z<0.75up to z<0.75– Mass and accretion Mass and accretion
rate for allrate for all– Careful de-blending Careful de-blending
of FeII linesof FeII lines
Z=0.75
Netzer and Trakhtenbrot 2006
BH mass in SDSS AGNBH mass in SDSS AGN
Netzer and Trakhtenbrot 2006
L/LL/LEddEdd vs. luminosity vs. luminosity
M=107
M=108
M=109
Optical FeII linesOptical FeII lines
Boroson (2001)
FeIIFeII
What determines the
FeII/H line ratio?
FeII/HFeII/H vs. L/L vs. L/LEddEdd
FeII/H increases with accretion rate at a given z
Answer: FeII/H depends on the iron abundance
The AGN starburst connectionThe AGN starburst connection
Madau plot (Cole et al. 2001)
The obsessed
Everybody in the
audience
Chapter A: XMM-Newton Chapter A: XMM-Newton
NGC 6240 + M82 NGC 6240
NGC 6240:
Netzer, Lemze et al 2005
AGN
starburst
The AGN-starburst connectionThe AGN-starburst connectionChapter B: SpitzerChapter B: Spitzer
MPE, UMCP, TAU, … 2006
Open Questions in Open Questions in AGN ResearchAGN Research
SummarySummary
Metallicity at all z - Metallicity at all z - – probably driven by accretion rateprobably driven by accretion rate
The iron saga – The iron saga – – FeII/HFeII/H probably reflects the iron abundance probably reflects the iron abundance
The AGN starburst connection –The AGN starburst connection –– Powerful starbursts accompany BH activity at most L Powerful starbursts accompany BH activity at most L
The unfinished list -The unfinished list -– Another open questionAnother open question
– Another open question …Another open question …