Rest-frame UV to optical X-shooter spectrum of the gravitationally lensed galaxy ``the 8 o'clock arc'': Dissection of its physical properties

Details Rest-frame UV to optical X-shooter spectrum of the gravitationally lensed galaxy ``the 8 o'clock arc'': Dissection of its physical properties Rest-frame UV to optical X-shooter spectrum of the gravitationally lensed galaxy ``the 8 o'clock arc'': Dissection of its physical properties

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011an....332..307d&link_type=abstract

Astronomische Nachrichten, Vol.332, Issue 3, p.307

Astronomy and Astrophysics

Astronomy

Cosmology: Observations, Galaxies: Individual (8 O'Clock Arc), Galaxies: Starburst, Galaxies: Abundances

Scientific paper

We present the rest-frame UV to optical spectrum of the gravitationally lensed galaxy, the ``8 o'clock arc'' at z=2.735, obtained with the X-shooter spectrograph. This is one of the rare comprehensive study of a high-redshift star-forming galaxy, usually not feasible due to the faintness of these objects. The spectrum of the 8 o'clock arc is rich in stellar and interstellar absorption features and in nebular emission features. Their analysis allowed us to derive most of the physical properties characterizing the galaxy. From HST images, we reconstruct the morphology of the arc in the source plane and confirm that we resolve a clump in rotation around the main core of galaxy in our X-shooter spectrum.
Based on X-shooter observations made with the European Southern Observatory VLT telescope, Paranal, Chile, collected during the first X-shooter Commissioning and under the programme ID No. 284.A-5006(A).

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