The Qso Hosts I Zw 1 and 3C 48: Prototypes of a Merger-Driven Quasar Evolution? |
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| Authors: | Julia Scharwächter Andreas Eckart Susanne Pfalzner Jens Zuther Melanie Krips Eva Schinnerer Johannes Staguhn |
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| Institution: | (1) I. Physikalisches Institut der Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany;(2) NRAO, Socorro, NM, USA;(3) NASA/Goddard Space Flight Center, Greenbelt, MD, USA |
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| Abstract: | I Zw 1 and 3C 48 are two neighboring template objects at a later stage of the hypothesized merger-driven evolutionary sequence from ultra-luminous infrared galaxies (ULIRGs) to quasi-stellar objects (QSOs). Since galaxy mergers are assumed to trigger the evolution, it is important to confirm the merger properties of transitionary objects. Using multi-wavelength observations and N-body simulations, the merger histories of I Zw 1 and 3C 48 have been investigated in two separate case studies. Here, the results from both studies are compared and their relevance for the evolutionary hypothesis is discussed.This research is partly based on observations with ISAAC at the Very Large Telescope (VLT) of the European Southern Observatory (ESO) under projects 67.B-0009 and 67.B-0019. |
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| Keywords: | quasars: individual: I Zw 1 quasars: individual: 3C 48 quasars: evolution galaxies: interactions |
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