Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995psu..rept.....n&link_type=abstract
Technical Report, Pennsylvania State Univ. University Park, PA United States Dept. of Astronomy and Astrophysics.
Astronomy and Astrophysics
Astronomy
Binary Stars, Stellar Flares, Ultraviolet Astronomy, Stellar Atmospheres, Sky Surveys (Astronomy), Satellite Imagery, Stellar Coronas, Nasa Programs, Iue, Doppler Effect, Spatial Distribution, Astronomical Spectroscopy, Stellar Spectra, Ultraviolet Spectra
Scientific paper
This grant was awarded to support the data analysis and publication of results from a NASA International Ultraviolet Explorer (IUE) observing program (VTOJN). Continuous observations of a single target (the RS CVn binary system V711 Tau = HR 1099) were obtained with the IUE satellite for approximately 6 days in Dec. 1992. These IUE observations were coordinated with the Multi-Site Continuous Spectroscopy (MUSICOS) campaign of ground-based observations. Our principal purpose was to map the atmospheric structure of V711 Tau in three dimensions, using Doppler imaging of different diagnostics to map the spatial structure at various atmospheric levels. A secondary purpose was to probe the structure and dynamics within flaring regions, should a flare occur during the observing period. The MUSICOS campaign interleaved three scientific programs by arranging continuous observations from sites around the globe for a minimum of 4 days per program. Investigators in each group thus provide observing and initial data reduction support for the other groups. These simultaneous ground-based observations were a critical part of our program to map spatial structure, as they enable us to extend our images from the photospheric surface up into the stellar corona. This program was a major observational effort and required extensive and time-consuming analysis. Support from this grant permitted the calibration, extraction, and measurement of the IUE data only. The interpretation of the results is on-going and is supported through other NASA grants.
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