Near Infrared Imaging Spectroscopy of IRAS FSC10214+4724: Evidence for a Starburst Region Around an AGN at z=2.3

Astronomy and Astrophysics – Astronomy

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Galaxies: Individual Alphanumeric: Fsc 10214+4724, Galaxies: Active, Infrared: Galaxies

Scientific paper

We report 1" imaging spectroscopy of the 1.95--2.4 mu m wavelength region in the z = 2.284 galaxy IRAS FSC 10214+4724. We find that the rest-frame H alpha and [N II] emission have different spatial extents. We also detect broad ( Delta vFWZP ~ 3500 km s-1) H alpha emission. FSC 10214 is a very luminous gravitationally lensed galaxy, which intrinsically contains both a type 1 active galactic nucleus and a more extended star-forming disk. The AGN and circumnuclear star formation both contribute significantly to the total luminosity of ~1013 Lsolar.

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