open questions in agn research hagai netzer, tel aviv university metallicity at all z the iron...

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 …