NOAO >   Observing Info >   Approved Programs >   2017A-0184

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Program Information for 2017A-0184


PI: Mark Everett, NOAO, everett@noao.edu
Address: SCI, 950 N. Cherry Ave., Tucson, Arizona 85719 United States

CoI: Steve B Howell, NASA Ames Research Center
CoI: Elliott Horch, SCSU
CoI: Johanna Teske, Carnegie Observatories

Title: Speckle Imaging to Characterize late-K & M Dwarf TESS Targets near the North Ecliptic Pole

Abstract: We propose to initiate a two-year high resolution speckle imaging study of bright M dwarfs near the north ecliptic pole. The stars in this study are expected to be prime $TESS$ exoplanet targets due to the intersection of habitable zone orbits and the $sim1$~year long light curves available from $TESS$ in this part of the sky. Speckle images will be used to map the sky in close angular proximity to each star ($sim0.05-1.4arcsec$ or, for many stars, to separations less than 1~AU), detecting close companions, measuring their relative brightnesses and colors and setting limits on the brightness of any undetected companions. These data will enable us to estimate M dwarf multiplicity for a rather unbiased set of essential $TESS$ targets, characterize the nature of companions to these stars, quantifying the degree to which their $TESS$ light curves are diluted by blending, exploring which planetary systems may be dynamically affected by secondary stars and distinguish bound systems from closely co-aligned field stars by color and relative proper motions.

Program Type: Standard/NASA WIYN

Scheduled Nights:
Run 1 (2017A):  WIYNQ/NESSI -- 25hrs


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 >   2017A-0184

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