FFT Deconvultion of Be Star Hα Line Profiles

Details FFT Deconvultion of Be Star Hα Line Profiles FFT Deconvultion of Be Star Hα Line Profiles

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.0903a&link_type=abstract

American Astronomical Society Meeting 207, #09.03; Bulletin of the American Astronomical Society, Vol. 37, p.1164

Astronomy and Astrophysics

Astronomy

Scientific paper

We have been monitoring the spectroscopic variability of Be stars using the UCA Fiber Fed Spectrograph. The spectra are 0.8 Angstrom/pixel resolution of the Hα line. The observed line profiles are a convolution of the actual profile and the instrumental profile. A Fast Fourier Transform (FFT) method has been used to deconvolve the observed profiles, given the instrument profile obtained by observing the narrow lines from the HgNe wavelength calibration lamp. The long-term monitoring of the spectroscopic variability of Be stars is crucial for testing the various Be star models. Deconvolved H-α line profiles, velocities, and variability are shown for gamma Cas, delta Sco, chi Oph, eta PsA, 48 Lib, and upsilon Sgr (HD181615).
Funding has been provided by the UCA University Research Council and the Arkansas Space Grant Consortium.

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