Computer Science – Databases
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1135..174s&link_type=abstract
FUTURE DIRECTIONS IN ULTRAVIOLET SPECTROSCOPY: A Conference Inspired by the Accomplishments of the Far Ultraviolet Spectroscopic
Computer Science
Databases
Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc., Photometric, Polarimetric, And Spectroscopic Instrumentation, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae
Scientific paper
B type stars are major contributors to the total far-UV (949-1225 Å) flux produced in the Milky Way and external galaxies. The final reprocessing of the FUSE satellite dataset, together with the existing archives of the HST/STIS, IUE, and the Copernicus Atlas of τ Sco, permit the construction of a high dispersion atlas of 10 sharp-lined B stars near the main sequence (mostly class III-V). Our atlas segregates the H I and molecular H2 and photospheric lines and, thanks to the synspec synthesis program, lists essentially all noticeable absorption features with known oscillator strengths for specta of types B0, B2, and B8-B9. The atlas will allow the identification of anomalous features in other B-type spectra and the selection of line proxies to compute Teff, anomalous abundance patterns, and possible departures of atmospheric T(τ)'s from nonstandard gradients. We discuss the input constituents for this atlas, show examples of atlas panels, and we display line identifications for the three spectral types noted above. The ~4300 lines we have identified comprise over 12% of the features in our line library. We have been unable to identify fewer than 5% of the visible features in the τ Sco spectrum, and fewer still in the B8 spectrum. Comparable numbers of lines are overpredicted in our syntheses.
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