2D kinematics and mass derivations in ULIRGs

Astronomy and Astrophysics – Astrophysics

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Scientific paper

Integral field optical fiber spectroscopy obtained with the INTEGRAL system, together with archival HST (WFPC2 and NICMOS) images, is used to carry out a program aimed at studying the internal physical structure and kinematics of a representative sample of Ultraluminous Infrared Galaxies (ULIRGs). Our goals are to characterize each individual system in order to infer generic properties of ULIRGs, and to perform simulations of high-redshift galaxy observations with JWST instruments. This work will be useful for stablishing connections between local ULIRGs and high-z galaxies, such as sub-mm galaxies, Lyman break galaxies and Spitzer galaxies. Here, we present results related to the kinematic properties of these systems, and the implications when deriving dynamical masses of high-redshift galaxies. Some results for IRAS 16007+3743 are shown too.

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