Intense star formation within resolved compact regions in a galaxy at z = 2.3

A. M. Swinbank (), I. Smail, S. Longmore, A. I. Harris, A. J. Baker, C. De Breuck, J. Richard, A. C. Edge, R. J. Ivison, R. Blundell, K. E. K. Coppin, P. Cox, M. Gurwell, L. J. Hainline, M. Krips, A. Lundgren, R. Neri, B. Siana, G. Siringo, D. P. Stark, D. Wilner and J. D. Younger
Additional contact information
A. M. Swinbank: Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
I. Smail: Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
S. Longmore: Harvard-Smithsonian Center For Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
A. I. Harris: University of Maryland, College Park, Maryland 20742, USA
A. J. Baker: Rutgers, University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854-8019, USA
C. De Breuck: European Southern Observatory, Karl-Schwarzschild Strasse, 85748 Garching bei München, Germany
J. Richard: Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
A. C. Edge: Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
R. J. Ivison: UK Astronomy Technology Centre, Science and Technology Facilities Council, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
R. Blundell: Harvard-Smithsonian Center For Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
K. E. K. Coppin: Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK
P. Cox: Institut de Radio Astronomie Millimétrique, 300 Rue de la Piscine, Domaine Universitaire
M. Gurwell: Harvard-Smithsonian Center For Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
L. J. Hainline: University of Maryland, College Park, Maryland 20742, USA
M. Krips: Institut de Radio Astronomie Millimétrique, 300 Rue de la Piscine, Domaine Universitaire
A. Lundgren: European Southern Observatory, Alonso de Cordova 3107, Cassilla 19001, Santiago 19, Chile
R. Neri: Institut de Radio Astronomie Millimétrique, 300 Rue de la Piscine, Domaine Universitaire
B. Siana: California Institute of Technology, MS 105-24, Pasadena, California 91125, USA
G. Siringo: European Southern Observatory, Alonso de Cordova 3107, Cassilla 19001, Santiago 19, Chile
D. P. Stark: Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, USA
D. Wilner: Harvard-Smithsonian Center For Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
J. D. Younger: Institute for Advanced Study, Einstein Drive, Princeton, New Jersey 08540, USA

Nature, 2010, vol. 464, issue 7289, 733-736

Abstract: Distant star formation The individual star-forming regions of the massive galaxies in the early Universe, at redshifts of around z = 2, are beyond the reach of even the largest of today's telescopes. But with help from gravitational lensing by a massive intervening galaxy cluster, brightening the image 32-fold and making it look larger, intense star formation has been observed in the submillimetre galaxy SMMJ2135-0102 at redshift z = 2.3259. The results reveal luminosity densities comparable to those of the dense cores of giant molecular clouds in the local Universe, suggesting that the underlying physics of star formation is similar to that of nearby galaxies, though the regions in the distant galaxies are about 100 times larger and 107 times more luminous overall.

Date: 2010
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DOI: 10.1038/nature08880

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