The Properties of Star-forming Regions within a Galaxy at Redshift 2

Details The Properties of Star-forming Regions within a Galaxy at Redshift 2 The Properties of Star-forming Regions within a Galaxy at Redshift 2

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010msngr.139...42s&link_type=abstract

The Messenger, vol. 139, p. 42-45

Physics

Scientific paper

The discovery and subsequent follow-up of one of the brightest sub-mm galaxies discovered so far is presented. First identified with the LABOCA instrument on APEX in May 2009, this galaxy lies at z = 2.32 and its brightness of 106 mJy at 870 µm is due to the gravitational magnification caused by a massive intervening galaxy cluster. Follow-up observations with APEX SABOCA have been used to constrain the far-infrared spectral energy distribution and hence measure the star formation rate, and Swedish Heterodyne Facility Instrument observations help constrain the excitation of the cold molecular gas. Furthermore, high resolution follow-up with the sub-mm array resolves the star-forming regions on scales of just 100 parsecs. These results allow study of galaxy formation and evolution at a level of detail never before possible and provide a glimpse of the exciting possibilities for future studies of galaxies at these early times, particularly with ALMA.

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