the scientific legacy of galaxy zoo

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The Scientific Legacy of Galaxy Zoo Chris Lintott University of Oxford

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Page 1: The Scientific Legacy of Galaxy Zoo

The Scientific Legacyof Galaxy Zoo

Chris LintottUniversity of Oxford

Page 2: The Scientific Legacy of Galaxy Zoo
Page 3: The Scientific Legacy of Galaxy Zoo

Classifying very large data sets is obviously beyond the capability of a single person. Therefore the galaxy classification problem calls for new approaches.

Lahav et al., Science, 1995

Page 4: The Scientific Legacy of Galaxy Zoo

Classifying very large data sets is obviously beyond the capability of a single person. Therefore the galaxy classification problem calls for new approaches.

Lahav et al., Science, 1995

We thank the UKST unit of the Royal Observatory of Edinburgh for the plate material, the APM group at RGO Cambridge for scanning support...

Page 5: The Scientific Legacy of Galaxy Zoo
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Papers mentioning Galaxy Zooin major journals (ApJ, ApJS, AJ,MNRAS, A&A)

Search via ADS Labs

Page 7: The Scientific Legacy of Galaxy Zoo
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The Scientific Legacyof Galaxy Zoo

Chris LintottUniversity of Oxford

Page 10: The Scientific Legacy of Galaxy Zoo

The Scientific Legacyof Galaxy Zoo

Chris LintottUniversity of Oxford

Important stuff led by people who aren’t here

Page 11: The Scientific Legacy of Galaxy Zoo
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Longo (astro-ph/0707.3793) finds an excess of anticlockwise spirals

Land et al. arXiv/0803.3274

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Separation (in 1/3600 of a degree)

Odd

s of

two

gala

xies

ha

ving

the

sam

e sp

in

Slosar et al. arXiv/0809.0717

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Spirals with older stars have aligned spins.

Pixel : 20Mpc/h

SF Bin

<age>

1 2 3 4 5 6 7 8 9 10 11

12 8.5 4.7 2.3 1.1 0.5 0.3 0.1 0.06 0.03 0.01

Jimenez et al. arXiv/0906.0994

Page 16: The Scientific Legacy of Galaxy Zoo

Morphological-type fractions, from our full sample of unweighted Galaxy Zoo likelihoods, as a function of redshift.

Bamford S P et al. MNRAS 2009;393:1324-1352

© 2009 The Authors. Journal compilation © 2009 RAS

Page 17: The Scientific Legacy of Galaxy Zoo
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The number of red spirals (red, thick, solid line) and blue early-types (blue, dotted line) in our luminosity-limited sample versus local galaxy density (left) as fractions of our whole sample and

(right) as fractions of all spirals and early-types, respectively.

Bamford S P et al. MNRAS 2009;393:1324-1352

© 2009 The Authors. Journal compilation © 2009 RAS

Page 19: The Scientific Legacy of Galaxy Zoo

Left: the change in the red fraction of galaxies in our luminosity-limited sample, divided into contributions due to the variation with local density of the morphological-type fractions (green,

dotted line), the fraction of spirals that are red (red, dot–dashed line) and the fraction of early-types that are blue (blue, dashed line).

Bamford S P et al. MNRAS 2009;393:1324-1352

© 2009 The Authors. Journal compilation © 2009 RAS

Page 20: The Scientific Legacy of Galaxy Zoo

Skibba R A et al. MNRAS 2012;423:1485-1502

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Masters et al. arXiv/1003.0449

Page 22: The Scientific Legacy of Galaxy Zoo

Marked Weighted Correlation Functions

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Marked Weighted Correlation Functions

Page 24: The Scientific Legacy of Galaxy Zoo

Marked Weighted Correlation Functions

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Marked Weighted Correlation Functions

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Upper panel: projected correlation function wp(rp) (circle points) and weighted projected correlation functions Wp(rp).

Skibba R A et al. MNRAS 2012;423:1485-1502

© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Page 27: The Scientific Legacy of Galaxy Zoo

Upper panel: projected correlation function wp(rp) (circle points) and weighted projected correlation functions Wp(rp).

Skibba R A et al. MNRAS 2012;423:1485-1502

© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Page 28: The Scientific Legacy of Galaxy Zoo

Upper panel: projected correlation function wp(rp) (circle points) and weighted projected correlation functions Wp(rp).

Skibba R A et al. MNRAS 2012;423:1485-1502

© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Sorry, Darren

Page 29: The Scientific Legacy of Galaxy Zoo

Upper panel: projected correlation function wp(rp) (circle points) and weighted projected correlation functions Wp(rp).

Skibba R A et al. MNRAS 2012;423:1485-1502

© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Sorry, Darren

Page 30: The Scientific Legacy of Galaxy Zoo

Upper panel: projected correlation function wp(rp) (circle points) and weighted projected correlation functions Wp(rp).

Skibba R A et al. MNRAS 2012;423:1485-1502

© 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

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Colour due to strong [O III] 5007 line in SDSS r band0.1 < z < 0.35

All are compact - essentially unresolved

Page 33: The Scientific Legacy of Galaxy Zoo

Colour due to strong [O III] 5007 line in SDSS r band0.1 < z < 0.35

All are compact - essentially unresolved

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Specific star formation rate versus mass for the Peas (purple diamonds) and the Galaxy Zoo Mergers sample (black points).

Cardamone C et al. MNRAS 2009;399:1191-1205

© 2009 The Authors. Journal compilation © 2009 RAS

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SDSS

HST

Starforming pea Narrow-line Seyfert pea

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SDSS

HST

Starforming pea Narrow-line Seyfert pea

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Amorin et al.

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Amorin et al. 2012

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data.galaxyzoo.org

[email protected]

zooniverse.org/publications

Bamford et al. arXiv/0805.2612Skibba et al. arXiv/1111.0969Cardamone et al. arXiv/0907.4155