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The discovery of a galaxy-wide superwind from a young massive galaxy at redshift z ≈ 3


High-velocity galactic outflows, driven by intense bursts of star formation and black hole accretion, are processes invoked by current theories of galaxy formation1 to terminate star formation in the most massive galaxies and to deposit heavy elements in the intergalactic medium. From existing observational evidence2,3 (for high-redshift galaxies) it is unclear whether such outflows are localized to regions of intense star formation just a few kiloparsecs in extent, or whether they instead have a significant impact on the entire galaxy and its surroundings. Here we present two-dimensional spectroscopy of a star-forming galaxy4 at redshift z = 3.09 (seen 11.5 gigayears ago, when the Universe was 20 per cent of its current age): its spatially extended Lyα line emission appears to be absorbed by H i in a foreground screen covering the entire galaxy, with a lateral extent of at least 100 kpc and remarkable velocity coherence. This screen was ejected from the galaxy during a starburst several 108 years earlier and has subsequently swept up gas from the surrounding intergalactic medium and cooled. This demonstrates the galaxy-wide impact of high-redshift superwinds.

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Figure 1: Part of the data cube obtained from integral field spectroscopy of the z = 3.09 galaxy LAB-2, showing the Lyα emission line.
Figure 2: A reconstructed image of the z = 3.09 galaxy LAB-2 in the Lyα emission line.
Figure 3: Lyα emission line profiles across the galaxy LAB-2 at z = 3.09. A profile is shown for each region labelled in Fig. 2.
Figure 4: An illustration of our model for the Lyα emission and absorption in the redshift z = 3.09 galaxy LAB-2.


  1. Benson, A. J. et al. What shapes the luminosity function of galaxies? Astrophys. J. 599, 38–49 (2003)

    ADS  Article  Google Scholar 

  2. Pettini, M. et al. The rest-frame optical spectra of Lyman break galaxies: star formation, extinction, abundances, and kinematics. Astrophys. J. 554, 981–1000 (2001)

    ADS  CAS  Article  Google Scholar 

  3. Pettini, M. et al. New observations of the interstellar medium in the Lyman break galaxy MS 1512-cB58. Astrophys. J. 569, 742–757 (2002)

    ADS  CAS  Article  Google Scholar 

  4. Steidel, C. C. et al. Lyα imaging of a proto-cluster region at <z > = 3.09. Astrophys. J. 532, 170–182 (2000)

    ADS  Article  Google Scholar 

  5. Lehnert, M. D., Heckman, T. M. & Weaver, K. A. Very extended X-ray and Hα emission in M82: implications for the superwind phenomenon. Astrophys. J. 523, 575–584 (1999)

    ADS  CAS  Article  Google Scholar 

  6. Adelberger, K. L., Steidel, C. C., Shapley, A. E. & Pettini, M. Galaxies and intergalactic matter at redshift z3: overview. Astrophys. J. 584, 45–75 (2003)

    ADS  CAS  Article  Google Scholar 

  7. Chapman, S. C. et al. Further multiwavelength observations of the SSA 22 Lyα-emitting blob. Astrophys. J. 606, 85–91 (2004)

    ADS  CAS  Article  Google Scholar 

  8. Taniguchi, Y. & Shioya, Y. Superwind model of extended Lyα emitters at high redshift. Astrophys. J. 532, 13–16 (2000)

    ADS  Article  Google Scholar 

  9. Fardal, M. A. et al. Cooling radiation and the Lyα luminosity of forming galaxies. Astrophys. J. 562, 605–617 (2001)

    ADS  CAS  Article  Google Scholar 

  10. Chapman, S. C. et al. Submillimeter imaging of a protocluster at z = 3.09. Astrophys. J. 548, 17–21 (2001)

    ADS  Article  Google Scholar 

  11. Basu-Zych, A. & Scharf, C. X-ray detection of an obscured active galactic nucleus in a z = 3.09 radio-quiet Lyα nebula. Astrophys. J. 615, 85–88 (2004)

    ADS  Article  Google Scholar 

  12. Bacon, R. et al. The SAURON project—I. The panoramic integral-field spectrograph. Mon. Not. R. Astron. Soc. 326, 23–35 (2001)

    ADS  Article  Google Scholar 

  13. Bower, R. G. et al. Deep SAURON spectral imaging of the diffuse Lyα halo LAB-1 in SSA 22. Mon. Not. R. Astron. Soc. 351, 63–69 (2004)

    ADS  CAS  Article  Google Scholar 

  14. Tenorio-Tagle, G., Silich, S. A., Kunth, D., Terlevich, E. & Terlevich, R. The evolution of superbubbles and the detection of Lyα in star-forming galaxies. Mon. Not. R. Astron. Soc. 309, 332–342 (1999)

    ADS  CAS  Article  Google Scholar 

  15. Mas-Hesse, J. M. et al. Lyα emission in starbursts: implications for galaxies at high redshift. Astrophys. J. 598, 858–877 (2003)

    ADS  CAS  Article  Google Scholar 

  16. Sutherland, R. S. & Dopita, M. A. Cooling functions for low-density astrophysical plasmas. Astrophys. J. Suppl. 88, 253–327 (1993)

    ADS  CAS  Article  Google Scholar 

  17. Binette, L., Kurk, J. D., Villar-Martín, M. & Röttgering, H. J. A. A vestige low metallicity gas shell surrounding the radio galaxy 0943–242 at z = 2.92. Astron. Astrophys. 356, 23–32 (2000)

    ADS  CAS  Google Scholar 

  18. Rocca-Volmerange, B., Le Borge, D., De Breuck, C., Fioc, M. & Moy, E. The radio galaxy K-z relation: The 1012 M mass limit. Astron. Astrophys. 415, 931–940 (2004)

    ADS  Article  Google Scholar 

  19. Neufeld, D. A. The transfer of resonance-line radiation in static astrophysical media. Astrophys. J. 350, 216–241 (1990)

    ADS  CAS  Article  Google Scholar 

  20. Steidel, C. C. The properties of absorption-line selected high-redshift galaxies. in The Environment and Evolution of Galaxies (eds Shull, J. M. & Thronson, H. A.) 263–294 (Kluwer Academic, Dordrecht, 1993)

    Chapter  Google Scholar 

  21. Boissier, S., Péroux, C. & Pettini, M. Damped Lyman α systems and disc galaxies: number density, column density distribution and gas density. Mon. Not. R. Astron. Soc. Lett. 338, 131–140 (2003)

    ADS  CAS  Article  Google Scholar 

  22. Davé, R., Hernquist, L., Katz, N. & Weinberg, D. H. The low-redshift Lyman α forest in cold dark matter cosmologies. Astrophys. J. 511, 521–545 (1999)

    ADS  Article  Google Scholar 

  23. Schaye, J. On the relation between high-redshift starburst galaxies and damped Lyα absorption systems. Astrophys. J. 559, 1–4 (2001)

    ADS  Article  Google Scholar 

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We thank the SAURON team for supporting this programme, together with E. Emsellem, E. Jourdeuil and ING staff for support on La Palma. The construction of SAURON was financed by contributions from ASTRON/NWO, the Institut des Sciences de l'Univers, the Université Claude Bernard Lyon-I, the universities of Durham and Leiden, The British Council, PPARC, and NOVA. R.J.W. and R.G.B. acknowledge support from PPARC, and R.G.B. also thanks the Leverhulme Foundation. J.G. is supported by the Euro3D research training network.

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Correspondence to R. J. Wilman.

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Wilman, R., Gerssen, J., Bower, R. et al. The discovery of a galaxy-wide superwind from a young massive galaxy at redshift z ≈ 3. Nature 436, 227–229 (2005).

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