Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey

Details Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8280a&link_type=abstract

HST Proposal ID #8280

Astronomy and Astrophysics

Astrophysics

Hst Proposal Id #8280 Cool Stars

Scientific paper

We propose to carry out a major ultraviolet spectral survey of "coronal" late-type stars using the powerful capabilities of STIS. The origin of the hot UV emissions of otherwise cool stars is a fundamental puzzle in astrophysics, and is linked closely with another long-standing mystery, that of late-type winds. Stars are the powerhouses and chemical factories of galaxies. The source of their ionizing radiations and the driving of their mass loss are of paramount importance in studies ranging from population synthesis, galactic chemical evolution, and cosmic rays to planetary atmospheres and terrestrial "space weather." Magnetic phenomena--at the heart of coronal activity and perhaps wind driving as well--are crucial in many cosmic settings, particularly dynamic environments such as associated with accretion and mass-transfer. Stars are accessible "laboratories without walls" in which to study the interplay of magnetic and plasma processes, and seek a unification with the h ig hly refined--but singular--portrait of the Sun painted by an array of recent orbiting observatories. The missing link: high-quality ultraviolet spectra of a diverse collection of late-type stars. Such a major project was unthinkable before STIS, but the high resolution, broad spectral coverage, and sensitivity of the second generation spectrograph can capture the stellar equivalent of a Hubble Deep Field.

Affiliated with

Also associated with

No associations

Rating

Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origins, Structure and Evolution of Magnetic Activity in the Cool Half of the H-R Diagram: A STIS Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-993085