NOAO >   Observing Info >   Approved Programs >   2014A-0016

Small NOAO Logo

Proposal Information for 2014A-0016


PI: Paul Anthony Wilson, University of Exeter, paw@astro.ex.ac.uk
Address: Physics Department, School of Physics, Stocker Road, Exeter, Devon EX4 4QL, UK

CoI: Catherine Huitson, University of Exeter, UK
CoI: David Sing, University of Exeter, UK
CoI: Gilda Ballester, University of Arizona, USA
CoI: Heather Knutson, California Institute of Technology, USA
CoI: Nikole Lewis, MIT/EAPS, USA

Title: Monitoring the Stellar Activity of the Exoplanet Host Star WASP-19: Supporting HST Observations of the First Spectroscopic Phase Curve

Abstract: We propose to use the CTIO 1.3 m telescope with ANDICAM to monitor the variability of the extrasolar-planet hosting star WASP-19. The observations will provide critical ground-based support for a recently approved HST program (ID: GO-13431, PI: C. Huitson) which will characterize the hot Jupiter WASP-19b by observing its phase curve; where the brightness of the planetary system is measured over the duration of half a planetary orbit. WASP-19 is a very active star making variability monitoring of this target critical in order to remove the stellar contribution to the variations seen in the phase curve. Knowing how the stellar flux is affecting the phase curve will better aid us in the accurate determination of the efficiency of heat redistribution from day side to night side as well as the day-night temperature contrast of the exoplanet. Past CTIO observations by our group of WASP-19 showed the importance of monitoring the stellar activity, playing a vital role in successfully measuring the exoplanetary transmission spectrum.


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 >   2014A-0016

noaoprop-help@noao.edu

Small NOAO Logo