a tale of Two G Stars

Details a tale of Two G Stars a tale of Two G Stars

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..767a&link_type=abstract

Chandra Proposal ID #03200663

Astronomy and Astrophysics

Astronomy

Chandra Proposal Id #03200663

Scientific paper

High-quality HETGS exposures of key coronal stars are presenting a unique, novel view of some of the most ubiquitous high-energy phenomena in the galaxy; and taking crucial steps toward making X-ray spectroscopy an indispensable remote-sensing tool for Astronomy. We will focus on the influence of stellar surface gravity by adding to our ongoing program the active G dwarf Chi1 Orionis (G0V) and the active G giant 24 Ursae Majoris (G4III). Chandra transmission grating spectroscopy offers a new way to determine temperatures and densities in the hot outer atmospheres of cool stars, probe chemical fractionation processes, and explore plasma dynamics. Our program will add to the Chandra Emission Line Project and help interpret lower-res XMM-Newton/RGS spectra of fainter stars.

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