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Outline of talk

Identifying and Classifying the Galaxies of the High Redshift Cluster 2192 Patricia Mutunga (with Fana Mulu) Advisors: Eric Wilcots Marc Verheijen. Outline of talk. Introduction Motivation The project Conclusion Acknowledgement. Motivation.

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Outline of talk

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  1. Identifying and Classifying the Galaxies of the High Redshift Cluster 2192Patricia Mutunga (with Fana Mulu) Advisors: Eric Wilcots Marc Verheijen

  2. Outline of talk • Introduction • Motivation • The project • Conclusion • Acknowledgement

  3. Motivation Eric Wilcots - NSBP-students conference Marc and Eric - mini lectures Questions :How do galaxies form? Do clusters form from field galaxies? Have they evolved significantly since their formation? Is their morphological type an indication of their age?

  4. Introduction This project entails the search for, and study of, galaxies in the rich cluster of galaxies Abell 2192 at very large distances ( i.e. at High Redshift).

  5. Abell 2192

  6. Geometric parameters GIPSY/ellint Photometric parameters External knowledge Morphologies Master Table! CCD mosaic image of Abell 2192 FLOW CHART FOR DATA PROCESSING SExtractor Separate stars & galaxies Basic sample of 221 galaxies GIPSY/ellfit GIPSY/copy 221 “postage stamp” images GIPSY/blot Remove stars & other galaxies

  7. The Project • CCD mosaic image of Abell 2192 - courtesy of Marc • Executed SExtractor • To separate the stars and galaxies • Basic sample of 221 galaxies • copy feature in GIPSY to make “postage stamp” images • Blot feature in GIPSY to remove tars and other galaxies • GIPSY and ellfit fitted in ellipses onto the galaxies to get geometric parameters • GIPSY and Ellint to get photometric parameters • External knowledge-atlases and text books: morphologies • All the steps led to The Master Table!

  8. GIPSY

  9. Ellint

  10. Examples LP in B band LP in R band

  11. Geometric Parameters and Photometric parameters • GIPSY and ellfit fitted in ellipses onto the galaxies to get geometric parameters • GIPSY and Ellint to get photometric parameters • External knowledge-atlases and text books: morphologies • All the steps led to The Master Table!

  12. Luminosity Profiles

  13. Luminosity Profiles

  14. Magnitude and Colour graph

  15. Radio detection

  16. Conclusions • Our objective was reached. • I learned a lot!

  17. Acknowledgements • Thank God • Thank Eric and Marc • Fana too! • All the REU students!

  18. copy feature in GIPSY to make “postage stamp” images Blot feature in GIPSY to remove tars and other galaxies GIPSY and ellfit fitted in ellipses onto the galaxies to get geometric parameters GIPSY and Ellint to get photometric parameters External knowledge-atlases and text books: morphologies All the steps led to The Master Table!

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