Sleuthing the Dynamo: Cycle 2 Continuation

Details Sleuthing the Dynamo: Cycle 2 Continuation Sleuthing the Dynamo: Cycle 2 Continuation

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3908a&link_type=abstract

HST Proposal ID #3908

Physics

Hst Proposal Id #3908

Scientific paper

Innovative technologies of the 1990s will open new windows to the interior of the Sun and its hidden dynamics: the GONG project for helioseismology; rare-earth detectors for solar neutrinos; and SOLAR PROBE for high-order moments of the mass distribution. At the same time, newly-commissioned space observatories will provide unprecedented views of the vacuum-UV and X-ray emissions of stars in our Galactic neighborhood. These seemingly unrelated developments are in fact deeply connected. A central issue of solar-stellar physics is the nature and origin of magnetic activity: the profound link between the interior dynamics of a late-type star and the violent state of its outermost million-degree coronal layers. As solar physicists are unlocking the secrets of the hydromagnetic dynamo deep inside the Sun, we will apply one of the powerful new astronomical tools of the decade -- the HST -- to document the early evolution of the dynamo and its associated external gas-dynamic activity. In particular, we will obtain high-S/N FUV spectra of solar-type stars in young galactic clusters ranging in age from 1/10-th to 1/100-th that of the Sun.

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