Spectromorphology: quantitative multiwavelength classification of galaxies

Denis Burgarella; Sebastian Lauger; Veronique Buat

doi:10.1117/12.457602

13 February 2003 Spectromorphology: quantitative multiwavelength classification of galaxies

Denis Burgarella, Sebastian Lauger, Veronique Buat

Proceedings Volume 4834, Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II; (2003) https://doi.org/10.1117/12.457602
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

In this paper, we show that the determination of the morphological type could be difficult when we observe galaxies in the rest-frame ultraviolet. This could be crucial as soon as we wish to study galaxies at redshifts beyond z~1 since the visible wavelength range corresponds to the rest-frame ultraviolet. In order to address the problem of performing a morphological analysis on a large number of galaxies as the very large samples that will be secured by GALEX, SLOAN, ASTRO-F in the near- to mid-term and from NGST, ALMA and ELT's later on, we need to define a simple quantitative and automatic method. We propose a quantitative multi-wavelength classification that would take into account the various stellar populations lying in the observed galaxies. This method makes use of multi-wavelength data but such databases are already needed to estimate the distance through photometric redshifts. SpectroMorphology allows to perform an automatic analysis of the nature of galaxies.

Citation Download Citation

Denis Burgarella, Sebastian Lauger, and Veronique Buat "Spectromorphology: quantitative multiwavelength classification of galaxies", Proc. SPIE 4834, Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II, (13 February 2003); https://doi.org/10.1117/12.457602

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