A progress report on the analysis of long exposure SWP high resolution spectra of cool stars

Details A progress report on the analysis of long exposure SWP high resolution spectra of cool stars A progress report on the analysis of long exposure SWP high resolution spectra of cool stars

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2349..445l&link_type=abstract

In NASA. Goddard Space Flight Center Future of Ultraviolet Astronomy Based on Six Years of IUE Res. p 445-449 (SEE N85-20961 1

Astronomy and Astrophysics

Astronomy

1

High Resolution, Iue, Late Stars, Stellar Atmospheres, Ultraviolet Spectra, Atmospheric Models, Binary Stars, Data Reduction, Dwarf Stars, Giant Stars, Supergiant Stars, Tables (Data)

Scientific paper

The IUE is the first experiment with sufficient sensitivity to obtain high resolution spectra (lambda/delta lambda is approximately 10,000) of many cool stars in the vitally important 1200 to 2000 A spectral region. These data provide qualitatively new information with which to understand the properties of and structures in the outer atmospheres of these stars. Also, these cool star spectra will be extremely useful in planning for the Space Telescope High Resolution Spectrograph, which will be 1000 times more sensitive than IUE but will be hampered by limited observing time and limited spectral bandwidth in each exposure. Very long exposure, high disperson SWP spectra of many stars located throughout the cool half of the HR diagram were obtained. These 12 to 21 hour exposures were obtained by combining NASA and Vilspa shifts so as to obtain the longest possible exposures at times of low background. Included are dwarf stars of spectral type G0 V to M2 V, G9.5 III to M5 II giants, G2 Ib to M2 Iab supergiants, a number of RS CVn-type systems, and Barium stars.

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