Crowded Field 3D Spectroscopy

Details Crowded Field 3D Spectroscopy Crowded Field 3D Spectroscopy

2003-11-13

arxiv.org/abs/astro-ph/0311315v1

Astronomy and Astrophysics

Astrophysics

4 pages, 8 figures, in Proceedings "Euro3D Science Workshop", Cambridge, May 2003, accepted for publication in AN

Scientific paper

10.1002/asna.200310308

The quantitative spectroscopy of stellar objects in complex environments is mainly limited by the ability of separating the object from the background. Standard slit spectroscopy, restricting the field of view to one dimension, is obviously not the proper technique in general. The emerging Integral Field (3D) technique with spatially resolved spectra of a two-dimensional field of view provides a great potential for applying advanced subtraction methods. In this paper an image reconstruction algorithm to separate point sources and a smooth background is applied to 3D data. Several performance tests demonstrate the photometric quality of the method. The algorithm is applied to real 3D observations of a sample Planetary Nebula in M31, whose spectrum is contaminated by the bright and complex galaxy background. The ability of separating sources is also studied in a crowded stellar field in M33.

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