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An alternative track of An alternative track of Black hole – galaxy co-Black hole – galaxy co-
evolution evolution
Smita MathurSmita Mathur
The Ohio State UniversityThe Ohio State University
Hopkins+06
Black hole—Bulge relationsBlack hole—Bulge relations
Gebhardt et al 2000, Ferrarese & Merritt 2000
Deviations from the BH—bulge Deviations from the BH—bulge relations relations
NLS1 do not lie on the NLS1 do not lie on the MMBHBH—L—Lbulgebulge relation relation
Log
MB
H
Log LBulge
Mathur et al 2001
Locus of NLS1s on the Locus of NLS1s on the MMBHBH---- plane plane
The MThe MBHBH---- for for normal galaxies and normal galaxies and broad line Seyfert 1s broad line Seyfert 1s is is not not followed by followed by the narrow line the narrow line Seyfert 1 galaxies.Seyfert 1 galaxies.
Grupe & Mathur 2004Grupe & Mathur 2004
Mathur & Grupe 2005a,bMathur & Grupe 2005a,b
Independent methods of BH Independent methods of BH mass determination give mass determination give
same results same results BH mass from fits to BH mass from fits to
SEDs. (Mathur et al SEDs. (Mathur et al 2001)2001)
BH mass from power BH mass from power spectrum analysis spectrum analysis (Czerny et al 2001)(Czerny et al 2001)
HHββ width (GM04) width (GM04) SameSame method for method for
both BLS1s and both BLS1s and NLS1sNLS1s
HST/ACS observations of HST/ACS observations of NLS1sNLS1s
Mathur et al. 2011
NLS1s lie below the NLS1s lie below the “Magorrian” relation: a robust “Magorrian” relation: a robust
resultresult
Mathur et al 2011
BH
mass
Bulge luminosity
NLS1s also lie off the fundamental plane of AGNs NLS1s also lie off the fundamental plane of AGNs (Barway & Kembhavi; Graham et al. )(Barway & Kembhavi; Graham et al. )
Is bulge crucial for the existence of a Is bulge crucial for the existence of a BH?BH?
Supermassive BHs in Bulge-less Supermassive BHs in Bulge-less galaxiesgalaxies
1. NGC 4561, an Sdm galaxy
2. NGC 3184, an Scd galaxy
3. NGC 4713, an Sd galaxy3. NGC 4713, an Sd galaxy
4. M 101, an Scd galaxy
Ghosh, Mathur et al.
See also Satyapal et al; Shields et al; Peterson et al.
Araya et al 2011 Submitted
Unabsorbed luminosity few x 10^42 erg/s
Chandra image XMM spectrum
NGC 5457 (M101)NGC 5457 (M101)Scd, 7 Mpc, HScd, 7 Mpc, HIIII
AGN activity – Star-formationAGN activity – Star-formation
No clear correlation with star No clear correlation with star formation rateformation rate
log L(0.3—10 keV)
log L
(24
mic
ron)
AGNs in SINGS galaxiesAGNs in SINGS galaxies
Grier, Mathur et al 2011
Log 3
.6 m
icro
n lum
inosi
ty
Log Lx
Hershel observations of Hershel observations of GOODSGOODS
Shao, Lutz et al 2010
AGN Luminosity
Sta
r-fo
rmin
g L
um
inosi
ty
Classical bulges vs. Classical bulges vs. PsuedobulgesPsuedobulges
Classical bulges vs. Classical bulges vs. PsuedobulgesPsuedobulges
HST/ACS observations of HST/ACS observations of NLS1sNLS1s
Mathur et al. 2011
Host galaxies have Host galaxies have pseudobulges pseudobulges
Five out of ten Five out of ten galaxies have galaxies have Sersic index n Sersic index n < about 2.2< about 2.2
n
B/T
NLS1s in PseudobulgesNLS1s in Pseudobulges
Orban de Xivry et al 2011
Pseudobulges host BHsPseudobulges host BHs
Pseudobulges do not follow the Pseudobulges do not follow the fundamental plane of galaxiesfundamental plane of galaxies
Pseudobulges form & grow by Pseudobulges form & grow by secular processessecular processes
…….and these are not pathological .and these are not pathological casescases
About 2/3 of all bright spirals host About 2/3 of all bright spirals host pseudobulges (n≤2) (B/T≤0.2)pseudobulges (n≤2) (B/T≤0.2)
About 65% of these also host a barAbout 65% of these also host a bar
Weinzerl et al 2009
…….and these are not pathological .and these are not pathological casescases
About 2/3 of all bright spirals host About 2/3 of all bright spirals host pseudobulges (n≤2) (B/T≤0.2)pseudobulges (n≤2) (B/T≤0.2)
About 65% of these also host a barAbout 65% of these also host a bar
Weinzerl et al 2009
Several nails in the present Several nails in the present paradigmparadigm
Bulge crucial for BH formation & Bulge crucial for BH formation & evolution: evolution: NONO, we discovered BHs in , we discovered BHs in bulge-less galaxiesbulge-less galaxies
BH—bulge correlations tight: BH—bulge correlations tight: NONO, we , we observe significant scatter/ offsetobserve significant scatter/ offset
Correlation of AGN activity with star Correlation of AGN activity with star formation rate: formation rate: NONO, not seen in local , not seen in local galaxies galaxies NORNOR at high redshift at high redshift
Feedback regulates BH/Bulge Feedback regulates BH/Bulge growth: growth: NONO, measured feedback , measured feedback orders of magnitude smaller.orders of magnitude smaller.
Hierarchical growth is the driver: Hierarchical growth is the driver: NONO, , pseudobulges host AGNs; secular pseudobulges host AGNs; secular processes importantprocesses important
ConclusionsConclusions
All galaxies host a supermassive BHAll galaxies host a supermassive BH Bigger galaxies, bigger BHsBigger galaxies, bigger BHs Total mass, not just the bulge massTotal mass, not just the bulge mass Non-causal relationNon-causal relation The current paradigm applicable only to The current paradigm applicable only to
luminous quasarsluminous quasars Secular processes dominate Secular processes dominate
(fly-bys, gas rich mergers, DM halo (fly-bys, gas rich mergers, DM halo mass………) mass………)
Semi-analytic modelsSemi-analytic models
Shankar et al. Submitted.
Pseudobulges and the Pseudobulges and the local BH mass densitylocal BH mass density
Shankar et al. 2011
Double BHsDouble BHs
Stay tuned …..
A strong correlation……A strong correlation……
…………does not mean does not mean causationcausation
Kennicutt 1990
Non-causal origin of the black Non-causal origin of the black hole-- galaxy scaling relationshole-- galaxy scaling relations
Janhke & Maccio 2010