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S. Arribas (STScI/IAC), T. Boeker (ESA/ESTEC), A. Bunker (Exeter), S. Charlot (IAP), D. Crampton (HIA), P. Ferruit (CRAL), M. Franx (Leiden), P. Jakobsen (ESA/ESTEC), R. Maiolino (Arcetri), G. de Marchi (ESA/ESTEC), H. Moseley, B. Rauscher (NASA/GSFC), M. Regan (STScI), H-W. Rix (MPIA), J. Valenti (STScI)
The Near Infrared Spectrograph (NIRSpec) will be equipped with an Integral Field Unit (IFU) which will allow the two-dimensional spectral characterization of astronomical objects with unprecedented depths, especially in the 2-5 micron wavelength range. In particular, NIRSpec-IFU observations of high-z galaxy populations will permit the capture of their often complex two-dimensional physical and kinematical structure, a prerequisite for carrying out a number of studies. These types of observations will also help to understand possible observational biases of large 1D (i.e. slit) surveys to be carried out in multi-object mode.
Here we describe the main characteristics of the NIRSpec-IFU, as well as its expected sensitivity and performance for observations of high-z galaxy populations. We also briefly discuss some key science programs to be carried out with this unit, like the determination of dynamical masses from 2D kinematics.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.