NOAO >   Observing Info >   Approved Programs >   2017B-0316

Small NOAO Logo

Program Information for 2017B-0316


PI: J. Sebastian Pineda, U. of Colorado, sebastian.pineda@lasp.colorado.edu
Address: LASP, 3665 Discovery Drive, Boulder, CO 80303 USA

CoI: Kevin France, U. of Colorado

Title: Rotational Evolution of M-dwarf Magnetic Activity: Stellar Properties and IR Emission Features

Abstract: M-dwarf stars are attractive candidates for exoplanet searches and their nearby exoplanets are prime targets for the James Webb Space Telescope, for the purposes of atmospheric characterization, in search of potentially habitable worlds. However, understanding the atmospheric properties 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. To assess the nature of this evolution and how it changes with the physical properties of the stars, it is critical to know the stellar properties. We propose to use ARCoIRIS to measure the IR spectra of the FUMES targets to provide a complete stellar characterization in support of determining this evolution of magnetic activity in the UV. Additionally, the IR spectra will also provide a means of testing how the IR activity indicators such as Pashcen-$delta$ relate to the UV emission features.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  CT-4m/ARCoIRIS -- 1n on Nov 04 - Nov 05 2017


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-0316

noaoprop-help@noao.edu

Small NOAO Logo