Eric Gawiser pire galform

Information about Eric Gawiser pire galform

Published on August 29, 2007

Author: CoolDude26

Source: authorstream.com

Content

Slide1:  MUSYC E-HDFS UBR composite Formation and Clustering of High-redshift Galaxies 2. Galaxy Formation Eric Gawiser Rutgers University What Do We Know About Galaxy Formation?:  What Do We Know About Galaxy Formation? Recently Solved Problems Integral Constraints Protogalaxy Demographics Recently Solved Problems in Galaxy Formation:  Recently Solved Problems in Galaxy Formation Initial Conditions: WMAP cosmology CMB + galaxy P(k) + Type Ia SNe  =0.7, m=0.3, b=0.04, H0=70 km/s/Mpc Recently Solved Problems in Galaxy Formation:  Recently Solved Problems in Galaxy Formation Initial Conditions: WMAP cosmology Final Conditions: Low-z galaxies Well-studied in MW and nearby galaxies Recently Solved Problems in Galaxy Formation:  Recently Solved Problems in Galaxy Formation Initial Conditions: WMAP cosmology Final Conditions: Low-z galaxies Integral Constraints: Cosmological quantities Baryon budget: Star Formation Rate Density (SFRD) is integral constraint over space at a given time (M/yr/Mpc3) Gas Density (gas(t)= gas,0 - 0t d*/dt), Stellar Mass Density (*(t)=0t d*/dt), Metal Density (*(t)=1/42 0t d*/dt) are integral constraints on SFRD over time CIB + FIRB constrain integrated SFRD to z=0 Recently Solved Problems in Galaxy Formation:  Recently Solved Problems in Galaxy Formation Initial Conditions: WMAP cosmology Final Conditions: Low-z galaxies Integral Constraints: Cosmological quantities Identified Galaxy Zoo at z=3 Lyman break galaxies, Lyman alpha emitters, Distant red galaxies, Active Galactic Nuclei, Damped Lyman alpha systems, Submillimeter galaxies However: Evolutionary sequence unclear, progenitors of typical galaxies like the Milky Way yet to be identified Galaxy Formation Models:  Galaxy Formation Models Monolithic Collapse Eggen, Lynden-Bell andamp; Sandage 1962 Gravitational collapse of cloud of primordial gas Thus all parts of galaxy formed at the same time Happened very early in the lifetime of the Universe Hierarchical Formation (CDM) Small clumps of matter merge together to form larger galaxies Happens throughout the lifetime of the Universe Thus formation of galaxies is an ongoing process Hierarchical Structure Formation :  Hierarchical Structure Formation No preferred scales in DM but non-linear collapse gives distribution of halos where galaxies can form Small halos collapse first  'bottom-up' At zandgt;2, galaxy-mass halos are rare so majority of halos collapsed recently Galaxies have Mmax and Mmin Scales come from 'gastrophysics' of virialization and feedback from supernovae and supermassive black holes Dark energy produces cosmological 'freeze-out' - structure stopped forming at zeq~0.3 Galaxy formation freeze-out occurred earlier in massive galaxies  'downsizing' (anti-hierarchical?) Slide9:  Why high redshift? Galaxy formation hard to study in local universe High-z = Jurassic Park of galaxies Nature Sep. 14, 2006 AGN with Damped Lyman  Absorber (DLA):  AGN with Damped Lyman  Absorber (DLA) DLAs have N(HI)andgt;2x1020cm-2, sufficient to self-shield against (re)ionization Provide unbiased sample of lines of sight through the cosmos out to quasar Lower column density systems are ionized  DLAs dominate neutral gas content Cosmic density of neutral gas :  Cosmic density of neutral gas Wolfe, Gawiser andamp; Prochaska 2005, ARAA Neutral gas reservoir traced by DLAs is depleted by z=0 HI (21cm) HI (DLAs) gas (x10-3) History of neutral gas:  History of neutral gas Closed box: dgas/dt =-d*/dt Cosmic density of neutral gas :  Cosmic density of neutral gas Wolfe, Gawiser andamp; Prochaska 2005, ARAA Neutral gas reservoir traced by DLAs is depleted by z=0 HI (21cm) HI (DLAs) gas (x10-3) Cosmic density of neutral gas:  Cosmic density of neutral gas Wolfe, Gawiser andamp; Prochaska 2005, ARAA Neutral gas reservoir traced by DLAs is depleted by z=0, forming andgt;~ half of the stars seen today HI (21cm) stars HI (DLAs) gas (x10-3) History of neutral gas:  History of neutral gas Closed box: dgas/dt =-d*/dt History of neutral gas:  History of neutral gas Closed box: dgas/dt =-d*/dt Open box: dgas/dt =-d*/dt + infall + merging - winds Cosmic density of neutral gas:  Cosmic density of neutral gas Wolfe, Gawiser andamp; Prochaska 2005, ARAA Neutral gas reservoir traced by DLAs is depleted by z=0, forming andgt;~ half of the stars seen today HI (21cm) stars HI (DLAs) gas (x10-3) Cosmic star formation history:  Cosmic star formation history 16% of cosmic age Giavalisco et al. 2004 zandgt;3 points from Lyman break galaxies only Solid blue curve: semi-analytic model of Somerville et al. 2001 Most stars formed at z<2:  Most stars formed at zandlt;2 Pettini 2003 Stellar mass density *(t)=0t d*/dt :  Stellar mass density *(t)=0t d*/dt Dust extinction less problematic, but need to know IMF and star formation history Dickinson et al 2003 Cosmic metal enrichment history *(t)=1/42 0t d*/dt :  Cosmic metal enrichment history *(t)=1/42 0t d*/dt Cosmic metallicity traced by DLAs rises gradually Wolfe, Gawiser andamp; Prochaska 2005, ARAA DLA metallicities in context:  DLA metallicities in context Pettini 2003 Evidence for dust depletion and alpha enhancement in DLAs:  Evidence for dust depletion and alpha enhancement in DLAs DLA Kinematics: Disks or Clumps?:  DLA Kinematics: Disks or Clumps? Theoretical Advances:  Theoretical Advances Semi-analytical models reproduce observations moderately well Cosmological hydrodynamic simulations have advanced greatly - but use recipes for star formation and supernova feedback Cosmological hydro simulations Nagamine et al. 2003:  Cosmological hydro simulations Nagamine et al. 2003 M=1010 M Hydro simulation of SFR history as a function of mass using “recipes”:  Hydro simulation of SFR history as a function of mass using 'recipes' Nagamine et al. 2003 Demographics of Protogalaxies:  Demographics of Protogalaxies Searching for the progenitors of typical galaxies like the Milky Way - are they found amongst the zoo of objects at z=3? Cosmological quantities (SFR, stellar mass buildup) should be summed over all high-redshift objects, not just DLAs, which trace the low-dust neutral gas, or LBGs, which trace the bright end of the luminosity function MUSYC(Multiwavelength Survey by Yale-Chile):  MUSYC (Multiwavelength Survey by Yale-Chile) www.astro.yale.edu/MUSYC Gawiser et al 2006a, ApJS 162, 1 Eric Gawiser (Yale, P.I.) Pieter van Dokkum (Yale, P.I.) Paulina Lira (U. Chile) Meg Urry (Yale) Martin Altmann (U. Chile) Felipe Barrientos (P.U. Catolica) Francisco Castander (IEEC-Barcelona) Daniel Christlein (U. Chile/Yale) Paolo Coppi (Yale) Marijn Franx (Leiden) Gaspar Galaz (P.U. Catolica) David Herrera (Yale) Leopoldo Infante (P.U. Catolica) Sheila Kannappan (U.T. Austin) Charles Liu (CUNY/AMNH) Sebastian Lopez (U. Chile) Danilo Marchesini (Yale) José Maza (U. Chile) Rene Méndez (U. Chile) Nelson Padilla (P.U. Catolica) Ezequiel Treister (ESO) Bill van Altena (Yale) Sukyoung Yi (Yonsei) MUSYC (Multiwavelength Survey by Yale-Chile):  MUSYC (Multiwavelength Survey by Yale-Chile) Square degree comprised of four 30'x30' fields (E-CDFS, E-HDFS, SDSS1030+05, Castander’s Window 1255+01) Deep UBVRIzJHK + NB5000Å imaging (to 5 depths of U,B,V,RAB=26, KAB=23, NB5000=25) Spitzer-MIPS+IRAC/HST-ACS/GALEX/XMM/Chandra coverage in 3/4 fields Spectroscopic follow-up with VLT+VIMOS, Magellan+IMACS, Gemini+GNIRS MUSYC: A Square-degree Survey of the Formation and Evolution of Galaxies and their Central Black Holes Science Projects::  MUSYC: A Square-degree Survey of the Formation and Evolution of Galaxies and their Central Black Holes Science Projects: Census of galaxies at z=3 (Gawiser) Evolved galaxies at 2andlt;zandlt;3 (van Dokkum) AGN demographics at 0andlt;zandlt;6 (Urry) Properties of K-selected galaxies at zandlt;2 (Lira, Barrientos, Infante) Proper motion + color survey for white and brown dwarfs (Mendez) Groups and clusters at zandlt;1 (Christlein, Lin) Recent star formation in ellipticals (Yi) Public outreach at Hayden Planetarium (Liu) Students giving MUSYC posters:  Students giving MUSYC posters Paula Aguirre (PUC) 'Clustering of K-selected galaxies' Harold Francke (U. Chile) 'Clustering of AGN at z=3' 75% of the baryons are hydrogen :  75% of the baryons are hydrogen At z=3, Lyman series falls in observed-frame optical Ionizing photons (andgt;13.6eV= andlt;912Å) do not escape  'Lyman Break' Ly  photons (10.2eV=1216Å) from recombination if stars have formed recently enough that little dust exists Protogalaxies at z=3: TLAs:  Protogalaxies at z=3: TLAs LBG=Lyman Break Galaxy selected via Lyman break, blue continuum (starburst) LAE=Lyman Alpha Emitter selected via strong emission line (early stage of star formation) DRG=Distant Red Galaxy selected via Balmer break in observed NIR SMG=Sub-Millimeter Galaxy selected in sub-mm, use radio to get position DLA=Damped Lyman  Absorption system selected in absorption, N(HI)andgt;1020 cm-2 Origin of the Lyman break:  Origin of the Lyman break Steidel andamp; Hamilton 1992 Origin of the Lyman break:  Origin of the Lyman break Steidel andamp; Hamilton 1992 V R U Lyman Break Galaxy (LBG):  Lyman Break Galaxy (LBG) Steidel andamp; Hamilton 1992 LBG in E-CDFS, R=22.8, z=3.38 strong Ly emission (EW=60Å, SFRUV ≥350 M/yr) numerous chemical absorption features (6 hr IMACS exposure) :  LBG in E-CDFS, R=22.8, z=3.38 strong Ly emission (EW=60Å, SFRUV ≥350 M/yr) numerous chemical absorption features (6 hr IMACS exposure) Ly  SiII OI/SiII CII FeII SiIV SiII CIV MUSYC LBGs: age, stellar mass,dust, SFR:  LBGs: age, stellar mass, dust, SFR Pettini 2003 Stellar winds in LBGs:  Stellar winds in LBGs Pettini 2003 Slide41:  U B NB5000 V R Lyman  Emitter (LAE) Gawiser et al 2006b, ApJ 642, L13, astro-ph/0603244 (MUSYC plus Caryl Gronwall, Robin Ciardullo, John Feldmeier) BV - NB5000 selection of LAEs:  BV - NB5000 selection of LAEs LAE in E-CDFS, R=25.7, z=3.085 Ly EW=200Å, SFR≥30 M/yr (6 hr IMACS exposure):  LAE in E-CDFS, R=25.7, z=3.085 Ly EW=200Å, SFR≥30 M/yr (6 hr IMACS exposure) MUSYC Gawiser et al 2005 Slide44:  Rest-frame UV continuum flux of spectroscopically confirmed samples LBG LAE # obj MUSYC UVR colors of confirmed objects:  UVR colors of confirmed objects Confirmed LAE Confirmed LBG Images from HST-ACS: irregular morphology at z=3:  Images from HST-ACS: irregular morphology at z=3 AGN z=3.60 R=22.4 LBG z=3.37 R=24.3 LBG z=3.24 R=23.8 LAE z=3.10 R=26.1 NIR selects rest-frame Balmer break at 2<z<4:  NIR selects rest-frame Balmer break at 2andlt;zandlt;4 Reddy et al 2005 Distant Red Galaxies (DRG):  Distant Red Galaxies (DRG) van Dokkum et al 2005, in prep. MUSYC van Dokkum et al 2005 Redshift distributions of 1.5<z<3.5 samples:  Redshift distributions of 1.5andlt;zandlt;3.5 samples Reddy et al 2005 SMG contribution to SFRD:  SMG contribution to SFRD Chapman et al 2005 Slide51:  M = MUSYC, in progress Slide52:  M = MUSYC, in progress Three Recent Reviews:  Three Recent Reviews Pettini 2003, 'Element Abundances through the Cosmic Ages', astro-ph/0303272 Silk 2004, 'Dark Matter and Galaxy Formation: Challenges for the Next Decade', astro-ph/0412297 Wolfe, Gawiser andamp; Prochaska 2005, 'The Damped Ly  Systems', ARAA, astro-ph/0509481 Gawiser Problem 3 is now assigned:  Gawiser Problem 3 is now assigned

Related presentations


Other presentations created by CoolDude26

CH8 PowerPoint Robotics
31. 12. 2007
0 views

CH8 PowerPoint Robotics

challenging behavior
17. 09. 2007
0 views

challenging behavior

ch1
17. 09. 2007
0 views

ch1

IP P mohan
19. 09. 2007
0 views

IP P mohan

RMP October 2006 Data
11. 10. 2007
0 views

RMP October 2006 Data

standing2
12. 10. 2007
0 views

standing2

lam talk
15. 10. 2007
0 views

lam talk

Escher
15. 10. 2007
0 views

Escher

2006 Radicarbon History
16. 10. 2007
0 views

2006 Radicarbon History

pre b373
17. 10. 2007
0 views

pre b373

banderas2
22. 10. 2007
0 views

banderas2

ostrichsm
17. 09. 2007
0 views

ostrichsm

209 OASIS Ostrich presentation
17. 09. 2007
0 views

209 OASIS Ostrich presentation

ssec software development
07. 10. 2007
0 views

ssec software development

dianxinyezhuanxing
12. 10. 2007
0 views

dianxinyezhuanxing

africa presentation
23. 10. 2007
0 views

africa presentation

spatial databases
23. 10. 2007
0 views

spatial databases

vollhardt lecc2005
17. 10. 2007
0 views

vollhardt lecc2005

232nm13
29. 10. 2007
0 views

232nm13

ans321L2
17. 09. 2007
0 views

ans321L2

Plan Bleu partie2
24. 10. 2007
0 views

Plan Bleu partie2

05 galaxies
29. 08. 2007
0 views

05 galaxies

nuclearWeapons
23. 12. 2007
0 views

nuclearWeapons

ChristensenNov2
29. 08. 2007
0 views

ChristensenNov2

Unit3
03. 01. 2008
0 views

Unit3

como fazer palestra espirita
07. 01. 2008
0 views

como fazer palestra espirita

XES Architecture Vacuum v2
17. 09. 2007
0 views

XES Architecture Vacuum v2

2 tinyos
29. 10. 2007
0 views

2 tinyos

Lecture16 overheads
21. 08. 2007
0 views

Lecture16 overheads

Hip Injuries in Athletics PartI
01. 08. 2007
0 views

Hip Injuries in Athletics PartI

jsimon irvine
29. 08. 2007
0 views

jsimon irvine

GeorgeMiley LOFAR May06
29. 08. 2007
0 views

GeorgeMiley LOFAR May06

jim brady
05. 10. 2007
0 views

jim brady

automotive invitation
24. 10. 2007
0 views

automotive invitation

microscopy
15. 10. 2007
0 views

microscopy

General Psychopathology
16. 02. 2008
0 views

General Psychopathology

The Virus of Violence
20. 02. 2008
0 views

The Virus of Violence

cindy pragma grid
17. 10. 2007
0 views

cindy pragma grid

ASOCallPresentation2 006WBSD
18. 03. 2008
0 views

ASOCallPresentation2 006WBSD

China Korea Trip Info
25. 03. 2008
0 views

China Korea Trip Info

A105 021 GalI
29. 08. 2007
0 views

A105 021 GalI

widefield yan
29. 08. 2007
0 views

widefield yan

blain cosmoskyoto
29. 08. 2007
0 views

blain cosmoskyoto

Corporate Profile November 2007
27. 03. 2008
0 views

Corporate Profile November 2007

Cal Mrtg Watkins
10. 04. 2008
0 views

Cal Mrtg Watkins

pcreek
13. 04. 2008
0 views

pcreek

7 9 kraft
29. 08. 2007
0 views

7 9 kraft

neos innovation challenge short
14. 04. 2008
0 views

neos innovation challenge short

nslab diffserv 06a
16. 04. 2008
0 views

nslab diffserv 06a

podraza medicare
17. 04. 2008
0 views

podraza medicare

Capitalizing
18. 04. 2008
0 views

Capitalizing

Meyer
22. 04. 2008
0 views

Meyer

forbes manhattan presentation
28. 04. 2008
0 views

forbes manhattan presentation

cs4811 ch09 uncertainty
17. 09. 2007
0 views

cs4811 ch09 uncertainty

Managing Tough Decisions
17. 09. 2007
0 views

Managing Tough Decisions

David Ellis powerpoint
30. 04. 2008
0 views

David Ellis powerpoint

Anesthetic Machines
02. 05. 2008
0 views

Anesthetic Machines

ADSL NTT
09. 10. 2007
0 views

ADSL NTT

ABM12006
15. 10. 2007
0 views

ABM12006

Richstone Mitchell
29. 08. 2007
0 views

Richstone Mitchell

CIP TOA and Beyond 5 29 07
03. 01. 2008
0 views

CIP TOA and Beyond 5 29 07

Thomson top panic05
18. 06. 2007
0 views

Thomson top panic05

Thesis defense rev12
18. 06. 2007
0 views

Thesis defense rev12

tftge dec 02
18. 06. 2007
0 views

tftge dec 02

Temp bone trauma slides 051012
18. 06. 2007
0 views

Temp bone trauma slides 051012

tamara
18. 06. 2007
0 views

tamara

tactical euro condor06
18. 06. 2007
0 views

tactical euro condor06

Stolarz D 1603
18. 06. 2007
0 views

Stolarz D 1603

stoc04
18. 06. 2007
0 views

stoc04

stabicp slides
18. 06. 2007
0 views

stabicp slides

Sofia Sima 2 ext new
18. 06. 2007
0 views

Sofia Sima 2 ext new

slacbaryo genesis
18. 06. 2007
0 views

slacbaryo genesis

iyef project homeless connect
31. 10. 2007
0 views

iyef project homeless connect

SOFG
18. 06. 2007
0 views

SOFG

NorthStar
13. 11. 2007
0 views

NorthStar

rickwilliams
21. 08. 2007
0 views

rickwilliams

Noah s Ark
03. 10. 2007
0 views

Noah s Ark

ambertech
19. 11. 2007
0 views

ambertech

Soc RespI SOC02
17. 09. 2007
0 views

Soc RespI SOC02

Internet Protocol Addresses
15. 06. 2007
0 views

Internet Protocol Addresses

Colour Reconnection
15. 06. 2007
0 views

Colour Reconnection

Research & Development
15. 06. 2007
0 views

Research & Development

Low Frequency Gravitational Wave
15. 06. 2007
0 views

Low Frequency Gravitational Wave

vander Marel mgct2 win
29. 08. 2007
0 views

vander Marel mgct2 win

G020514 00
17. 09. 2007
0 views

G020514 00

aas calzetti
29. 08. 2007
0 views

aas calzetti

jokes riddles
17. 09. 2007
0 views

jokes riddles

vaulttutorial
19. 09. 2007
0 views

vaulttutorial

Ch90 ExtensionsToFOPC
17. 09. 2007
0 views

Ch90 ExtensionsToFOPC

Mercurio
29. 08. 2007
0 views

Mercurio

Eric Gawiser pire galclust
29. 08. 2007
0 views

Eric Gawiser pire galclust

1 Dirk Van Braeckel
23. 10. 2007
0 views

1 Dirk Van Braeckel

directors roundtable 0407
02. 10. 2007
0 views

directors roundtable 0407

MWR
01. 08. 2007
0 views

MWR

01 Singleton
17. 09. 2007
0 views

01 Singleton

astro101 2000oct
15. 11. 2007
0 views

astro101 2000oct

CCAT06 Chapman
29. 08. 2007
0 views

CCAT06 Chapman

nips06 tutorial
17. 09. 2007
0 views

nips06 tutorial

90convexpo Jeff Tobe ppt
17. 09. 2007
0 views

90convexpo Jeff Tobe ppt