QUASAR HOSTS Growing Galaxies with Monstrous Middles

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QUASAR HOSTS(Growing Galaxies with Monstrous
Middles)

• Kim K. McLeod, Wellesley College
• Hostesses past and present
• Frannie DArcangelo
• Melissa Rice
• Rebecca Stoll

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Galaxy Gallery
Merger
Spirals, taken by ASTR 206
Elliptical

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Spectra compared (visible light)
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KKMs Top Five Quasar Factoids

• Theyre HONKIN LUMINOUS

• Theyre broadband emitters

• Theyre visible across the visible Universe

• They were most common 10Gyr ago

• They are voracious feeders (but must obey the
  Eddington limit)

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Model of a quasars heart
Galaxy D105 LY 2x1010 au M1012
MSun Black Hole RSch2GMBH/c2
3km(MBH/MSun) 10au in quasar MBHgt109MSun
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Quasar nuclei are sexy Quasar host galaxies
arewell, hard to see! Problems
are CONTRAST (nucleus outshines the whole
galaxy) and RESOLUTION (quasars are veeeery
distant)
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HSTOur first clear look!
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Which of these things is not like the other?
K. McLeod/Sky and Telescope
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YOUR TAX AT WORK! PG0947396 at 1.6umNICMOS
arrays on HST 2.4m and the Steward 2.3m
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McLeods Thesis What the Near-IR can do for YOU!
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NICMOS image, in the RAW
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Mrk876and little buddy!
K. McLeod/Scientific American
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Hubble Space Telescope NICMOS images
OOOOH, AAAAAH!
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(zlt0.4)
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Black hole v. spheroid massthey know about each
other!Haring Rix 2003
The Kormendy Relation Mbh0.006MGal
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Black hole in the Milky Ways center! From the
fantastic speckle images by the team at MPE R.
Genzel A. Eckart http//www.mpe.mpg.de/www_ir/G
C/
And guess what? M3x106 MSun Is a perfect fit
to the Kormendy relation ?
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Growing up with a monster in the middle
Kauffmann Haehnelt 2000 Hierarchical
structure formation black holes are fueled, and
galaxies grow, through mergers
Z0.4
Z3
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Hosts at higher redshift
H K(z4)
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Taking the big step to high-z Do PANIC!
Bechtold and McLeod have been using Magellan
(6.5m) and Gemini (8m) to image z4 quasars in
the near-IR
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Thanks Rebecca!
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PANIC at z4 Stay tuned
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For nowThe End