Fe II (4000-5500 A) template in AGN spectra



Instructions:

Upload the AGN spectrum within 4000-5500 Å range, with subtracted continuum. Make spectrum to be two column ascii file (wavelength, flux) of "plain/text" mime type, regardless of extension. Put initial parameters in the form. For approximate temperature, width and shift you may use the values given in the Test (down), but for intensities put the values which are approximately the same order of magnitude as the flux in your spectrum. Put 3000 iterations to obtain the best fit.

Test

For testing the program use this spectrum file data_test.txt, and put parameters of fit to be, ie.: 10000, 1500, 0, 4, 3, 3, 3, 1 (with following order). Try application with 0 iterations, and then with 3000 iterations.


Fit one spectrum: explanation of template parameters and fitting procedure



Acknowledgments

If you find this service useful, please cite the following papers:

1. Kovačević, J., Popović, L. Č. Dimitrijević, M. S., 2010: Analysis of Optical Fe II Emission in a Sample of Active Galactic Nucleus Spectra, ApJS..189...15K. (arXiv:1004.2212)

2. Shapovalova, A. I., Popović, L. Č., Burenkov, A. N., Chavushyan, V. H., Ilić, D., Kovačević, A., Kollatschny, W., et al. 2012: Spectral Optical Monitoring of the Narrow-line Seyfert 1 Galaxy Ark 564, ApJS..202...10S. (arXiv:1207.1782)