Published June 21, 2016 | Version v1

Prospects for ALMA Studies of the Solar-Stellar Connecon

Authors/Creators

  • 1. JILA/University of Colorado, Boulder, Colorado, USA

Contributors

  • 1. Uppsala University, Sweden

Description

ALMA provides a splendid opportunity to observe a wide range of star types at millimeter wavelengths to investigate the solar-stellar connection. I will compare the sensitivities and wavelength coverages of ALMA and the JVLA to highlight the discovery space that ALMA has for stellar astronomy. At millimeter wavelengths, ALMA will be able to detect thermal and gyroresonance emission from nearby stellar chromospheres and transition regions. Comparison of millimeter fluxes from ALMA with centimeter fluxes from JVLA may be able to separate thermal from gyrosynchrotron emission from stellar coronae and thereby measure magnetic field strengths in stellar coronae. Measurements of stellar wind mass-loss rates are feasible with ALMA for giants but will be difficult for main sequence stars. The study of stellar flares should be an active area of research with ALMA.

Notes

This presentation was given in the splinter session "The solar-stellar connection in the era of ALMA" at the 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun ("Cool Stars 19") in June 2016.

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