NOAO >   Observing Info >   Approved Programs >   2017B-0317

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Program Information for 2017B-0317


PI: J. Sebastian Pineda, U. of Colorado, sebastian.pineda@lasp.colorado.edu
Address: Laboratory for Atmospheric and Space Physics (LASP), 3665 DISCOVERY DRIVE, BOULDER, CO 80303 USA

CoI: Kevin France, U. of Colorado

Title: Rotational Evolution of M-dwarf Magnetic Activity: Connecting UV and Optical Emission Features

Abstract: M-dwarf stars have become attractive candidates for exoplanet searches and will be a main focus of the upcoming TESS mission, with the continued search for nearby potentially habitable worlds. However, the atmospheric characterization of these exoplanetary systems depends critically on the high-energy stellar radiation environment from the X-ray to the NUV. Strong radiation at these energies can lead to atmospheric mass loss and is a strong driver of photochemistry in planetary atmospheres. The habitability and potential prospect of such exoplanetary atmospheres to develop life depends on the evolution of the atmosphere and hence the evolution of the incident radiation field. We are thus conducting the Far Ultraviolet M-dwarf Evolution Survey (FUMES) to measure the strong FUV coronal/chromospheric emission features of young M dwarfs (12 - 650 Myr) of known rotational periods with the Hubble Space Telescope. However, because the UV emission requires space-based instrumentation to deterimine, it is imperative that we connect the spectroscopic UV features to more observationally accessible optical activity indicators. We propose to use Gemini South to conduct spectroscopic monitoring of the 4 FUMES targets in the southern hemisphere coinciding simultaneously with the HST observations to robustly connect the optical emission line fluxes (e.g. H-alpha) with the FUV features, and determine how these features change both stochastically and with high-energy events like flares.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  GEM-SQ/GMOSS -- 4.7hrs band 1 (GS-2017B-Q-24)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017B-0317

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