Spectral synthesis of stellar populations

Details Spectral synthesis of stellar populations Spectral synthesis of stellar populations

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..222..173g&link_type=abstract

The Interplay among Black Holes, Stars and ISM in Galactic Nuclei, Proceedings of IAU Symposium, No. 222. Edited by T. Storchi-B

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We present a new method to decompose the stellar population mixtures in galaxies. The method combines the spectra of simple stellar populations (SSP) of different ages and metallicities, computed with the recently published high spectral resolution evolutionary synthesis models of Bruzual & Charlot (2003). Statistical mechanics techniques, based on Markov Chain Monte Carlo methods, are used in the search for the combination of SSPs which best matches an observed spectrum. The spectral base covers 10 ages and 3 metallicities. The method provides the Star Formation History (SFH) expressed in a population vector vec{x}, whose components represent the fractional contribution of each SSP to the total flux (or mass). The code also estimates the velocity dispersion σ*. A series of simulations were performed to evaluate the code's ability to recover the input parameters (SFH, extinction and velocity dispersion), to investigate the effects of noise in the data and map intrinsic degeneracies of stellar populations.

Affiliated with

Also associated with

No associations

Rating

Spectral synthesis of stellar populations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectral synthesis of stellar populations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral synthesis of stellar populations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1112923