The origin of bulges in cosmological Stellar clumps and merger - - PowerPoint PPT Presentation

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The origin of bulges in cosmological Stellar clumps and merger - - PowerPoint PPT Presentation

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Bulge ART Introduction The origin of bulges in cosmological Stellar clumps and merger history simulations Merger tree Kinematic structure Collaborators: Analysis Adi Zolotov, Daniel Ceverino, Avishai Dekel. Method Origin of the Bulge

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SLIDE 1

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

The origin of bulges in cosmological simulations

Collaborators: Adi Zolotov, Daniel Ceverino, Avishai Dekel. Dylan Tweed dylan.tweed@googlemail.com

Racah Institute of Physics, HUJI, Jerusalem

UCSC Galaxy Formation Workshop - UCSC - August 13th – 17th 2012

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. Tweed Racah Institute Bulge ART 15/8/2012 1 / 12

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SLIDE 2

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Analysis of ART simulations.

Work in collaboration with: Daniel Ceverino, Nir Mandelker, Adi Zolotov, Marcello Cacciatto, Loren Hoffman, Avishai Dekel, Joel Primack. AMR simulation hydro ART, (Kratsov, Klypin), 30 zoom-in simulations of high redshift galaxies, spatial resolution 35-70 pc. Main focus, VDI, disc evolution, bulge formation.

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. Tweed Racah Institute Bulge ART 15/8/2012 2 / 12

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SLIDE 3

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

High resolution AMR zoom-in z>1 simulations

Daniel Ceverino’s 1st simulations sample

Galaxy Target Mv Rv Mv Mstar Mg afin 1012 M⊙ kpc 1012 M⊙ 1011 M⊙ 1011 M⊙ MW01 1.53 102 0.81 0.72 0.57 0.42 MW02 1.21 105 0.89 2.56 1.12 0.34 MW03 1.93 099 0.73 0.60 0.51 0.42 MW04 4.01 123 1.42 1.41 0.89 0.42 MW06 40.9 106 0.92 1.06 0.49 0.50 MW07 1.70 073 0.30 0.30 0.22 0.50 MW08 1.41 071 0.28 0.28 0.15 0.50 MW09 1.10 059 0.16 0.19 0.08 0.50 MW10 1.53 102 0.82 0.72 0.44 0.50 MW11 1.42 088 0.53 0.51 0.28 0.40 MW12 1.69 130 1.70 2.06 1.01 0.48 VL01 2.00 117 1.23 1.54 0.75 0.37 VL02 2.00 101 0.81 0.89 0.46 0.50 VL03 2.04 117 1.22 1.44 0.76 0.33 VL04 2.06 109 1.01 1.33 0.51 0.50 VL05 2.00 118 1.28 1.29 0.75 0.41 VL06 2.01 099 0.75 0.94 0.32 0.50 VL07 2.61 129 1.66 2.15 0.82 0.35 VL08 2.66 112 1.09 1.35 0.46 0.50 VL09 2.59 086 0.49 0.61 0.24 0.34 VL10 2.59 102 0.81 0.95 0.44 0.50 VL11 2.64 130 1.73 2.02 0.81 0.50 VL12 2.61 105 0.90 0.96 0.51 0.50 SFG1 3.30 129 1.66 2.10 0.87 0.46 SFG4 3.29 112 1.09 1.16 0.66 0.42 SFG5 3.33 123 1.38 1.52 0.78 0.50 SFG8 6.59 121 1.38 1.70 0.72 0.35 SFG9 5.17 135 1.89 2.44 1.22 0.49

Table : Target mass is at z=1, virial measurement are at z =2.

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 3 / 12

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SLIDE 4

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Gas mosaics

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. Tweed Racah Institute Bulge ART 15/8/2012 4 / 12

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SLIDE 5

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Gas mosaics

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. Tweed Racah Institute Bulge ART 15/8/2012 4 / 12

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SLIDE 6

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Pipeline

1

Group finding on stellar component with AdaptaHOP: Galaxies, clumps.

2

Stellar Merger trees: stars used as tracer particles .

3

Analysis: Galaxy evolution, In-situ clump, Ex-situ clump (mergers/interactions)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 5 / 12

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SLIDE 7

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 8

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 9

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 10

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 11

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 12

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 13

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 14

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Visualisation

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 6 / 12

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SLIDE 15

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Clumps co-rotating with the disc.

Visualization in the rotation frame of the galaxy1 Smooth component + In-situ clumps + Ex-situ clumps

1jz = Lstar.Lgal and jmax = |rstar| ∗ |vstar|

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 7 / 12

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SLIDE 16

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Clumps co-rotating with the disc.

Visualization in the rotation frame of the galaxy1 Smooth component + In-situ clumps

1jz = Lstar.Lgal and jmax = |rstar| ∗ |vstar|

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 7 / 12

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SLIDE 17

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Clumps co-rotating with the disc.

Visualization in the rotation frame of the galaxy1 Smooth component

1jz = Lstar.Lgal and jmax = |rstar| ∗ |vstar|

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 7 / 12

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SLIDE 18

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Question

1

How is the stellar bulge built up? (Zolotov & Tweed 2012 in prep)

2

Can we understand the build up of the Galaxy with this merger trees?

We can quantify the evolution of global properties of the whole galaxy. We can define the galaxy as 3 kinematic components.

3

Is it enough to understand the build up of one component?

No. Let’s track the stars which build up each component.

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. Tweed Racah Institute Bulge ART 15/8/2012 8 / 12

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SLIDE 19

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

3 criteria classification

1

Structural decomposition: AdaptaHOP , smooth, In-situ clumps, Ex-situ clumps

2

Kinematic decomposition: stellar halo, stellar bulge, stellar disc.

3

Stellar origin: where the star was born in the merger tree and kinematic component.

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 9 / 12

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SLIDE 20

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 21

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 22

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 23

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 24

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 25

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 26

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 27

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 28

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 29

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 30

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 31

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 32

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 33

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 34

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 35

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 36

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 37

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 38

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

slide-39
SLIDE 39

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Exemples: Build up of the discs and the bulges

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 10 / 12

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SLIDE 40

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Stacked evolution

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 11 / 12

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SLIDE 41

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Stacked evolution

Zolotov, Tweed et al. (in prep)

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 11 / 12

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SLIDE 42

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Conclusion

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 12 / 12

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SLIDE 43

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Conclusion

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 12 / 12

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SLIDE 44

Bulge ART Introduction Stellar clumps and merger history

Merger tree Kinematic structure

Analysis

Method Origin of the Bulge

Conclusion

Conclusion

  • D. P

. Tweed Racah Institute Bulge ART 15/8/2012 12 / 12