Separating Physical Components from Galaxy Spectra by Subspace Methods

Details Separating Physical Components from Galaxy Spectra by Subspace Methods Separating Physical Components from Galaxy Spectra by Subspace Methods

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..371..443y&link_type=abstract

Statistical Challenges in Modern Astronomy IV ASP Conference Series, Vol. 371, proceedings of the conference held 12-15 June 200

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the distribution of physical components of galaxies in wavelength space through subspace methods. We find that it is valid to assume that the stellar and the gaseous components of galaxies span complementary subspaces. To first order, stellar and gaseous spectral features can be extracted from galaxy spectra through a simple matrix multiplication.

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