Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724228b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #242.28; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a detailed analysis of the ultraviolet spectrum of HgMn stars. Using the SPECTRUM code of Gray and Corbally (1994) we perform a high resolution, order by order, analysis of archival spectroscopic data from the International Ultraviolet Explorer (IUE). The data set used here consists of IUE spectrophotmetry obtained using the high-resolution echelle observing mode with both the short-wavelength (1150-2000 Angstroms) and the long-wavelength (1900-3200 Angstroms) cameras. This study builds upon detailed spectral synthesis work of the A0V star Vega by Fitzpatrick (2010) and the analysis of HgMn star IUE spectra by Smith (1993) . Through a chi2 minimization routine the analysis yields detailed abundances, effective temperatures, radial velocities, surface gravities, and microturbulence velocities. Thusly, we improve on the parameter determinations for HgMn and comment on the abundance patterns of these chemically peculiar B-stars.
This work is supported by the Villanova University Research for Undergraduates Awards Program and NASA programs.
Ballouz Ronald-Louis
Fitzpatrick Edward L.
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