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3D Spectroscopy Unveils Massive Galaxy Formation Modes at High-z

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Environment and the Formation of Galaxies: 30 years later

Part of the book series: Astrophysics and Space Science Proceedings ((ASSSP))

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Abstract

Massive (stellar mass ≥ 1011  M ⊙) galaxies at high redshift (z ≥ 1. 5) remain mysterious objects. Their extremely small sizes (effective radii of 1 − 2 kpc) make them as dense as globular clusters, whereas in the present day Universe similar mass systems are large with old and metal-rich stellar populations. In order to explore this development, we present near-IR IFU observations with SINFONI@VLT for ten massive galaxies at z ∼ 1. 4 solely selected by their high stellar mass which allows us to retrieve velocity dispersions, kinematic maps and dynamical masses. We join this with imaging from the GOODS NICMOS Survey (GNS), which was carried out by our group, and which is the largest sample of massive galaxies (80 objects) at high redshift (1. 7 < z < 3) to date. With these data we show how their morphology changes, possibly as a result of minor merging events also seen in the kinematics.

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References

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Author information

Authors and Affiliations

  1. School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK

    F. Buitrago, C. J. Conselice & R. Grützbauch

  2. Laboratoire d’Astrophysique de Toulouse-Tarbes, 31400, Toulouse, France

    B. Epinat

  3. Departamento de Astrofísica, Universidad Complutense de Madrid, 28040, Madrid, Spain

    A. G. Bedregal

  4. Instituto de Astrofísica de Canarias, 38205, Tenerife, Spain

    I. Trujillo

Authors
  1. F. Buitrago
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  2. C. J. Conselice
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  3. B. Epinat
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  4. A. G. Bedregal
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  5. I. Trujillo
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  6. R. Grützbauch
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Consortia

The GNS team

Corresponding author

Correspondence to F. Buitrago .

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Editors and Affiliations

  1. , Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, RH5 6NT, Surrey, United Kingdom

    Ignacio Ferreras

  2. Astronomisches Rechen-Institut, Moenchhofstrasse 12 - 14, Heidelberg, 69120, Germany

    Anna Pasquali

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© 2011 Springer-Verlag Berlin Heidelberg

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Buitrago, F. et al. (2011). 3D Spectroscopy Unveils Massive Galaxy Formation Modes at High-z. In: Ferreras, I., Pasquali, A. (eds) Environment and the Formation of Galaxies: 30 years later. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20285-8_32

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  • DOI: https://doi.org/10.1007/978-3-642-20285-8_32

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-20284-1

  • Online ISBN: 978-3-642-20285-8

  • eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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