The Nearby QSO Host I Zw 1: NIR Probing of Structural Properties and Stellar Populations

Details The Nearby QSO Host I Zw 1: NIR Probing of Structural Properties and Stellar Populations The Nearby QSO Host I Zw 1: NIR Probing of Structural Properties and Stellar Populations

2003-11-03

arxiv.org/abs/astro-ph/0311027v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, to be published in "The Dense Interstellar Medium in Galaxies", proceedings of the 4th Cologne-Bonn-Zermat

Scientific paper

The likely merger process and the properties of the stellar populations in the I Zw 1 host galaxy are analyzed on the basis of multi-wavelength observations (with the ISAAC camera at the Very Large Telescope (VLT/UT1) of the European Southern Observatory (ESO), Chile (Paranal), with the interferometer of the Berkeley-Illinois-Maryland Association (BIMA), USA (Hat Creek/California), and with the IRAM Plateau de Bure Interferometer (PdBI), France) and N-body simulations. The data give a consistent picture of I Zw 1, with properties between those of ultra-luminous infrared galaxies (ULIRGs) and QSOs as displayed by transition objects in the evolutionary sequence of active galaxies.

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