The giant Lyα nebula associated with a z=2.5 radio galaxy

Details The giant Lyα nebula associated with a z=2.5 radio galaxy The giant Lyα nebula associated with a z=2.5 radio galaxy

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..187v&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 2/3, p.187-190

Mathematics

Logic

Galaxies: Active, Galaxies: Individual: Mrc 2104-242, Galaxies: Evolution

Scientific paper

We present a kinematic and morphological study of the giant Lyα nebula associated with the radio galaxy MRC 2104-242 (z = 2.49) based on integral field spectroscopic VIMOS data from VLT. The galaxy appears to be embedded in a giant (⪆ 120 kpc) gas reservoir that surrounds it completely. The kinematic properties of the nebula suggest that it is a rotating structure, which would imply a lower limit to the dynamical mass of ˜ 3 × 1011 M_&sun;. An alternate scenario is that the gas is infalling. Such a process would be able to initiate and sustain significant central starburst activity, although it is likely to contribute with less than 10% of the total stellar mass of the galaxy.
Based on observations carried out at the European Southern Observatory, Chile (program 073.B-0189)

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