PI: Noel Richardson, U. of Toledo, noel.richardson@UToledo.edu
Address: Physics Department, 2801 W. Bancroft, MS 113, Toledo, Ohio 43606 United States
CoI: Thomas Madura, San Jose State U.
CoI: Christopher Russell, NASA Goddard Space Flight Center
CoI: Peredur Williams, Royal Observatory, Edinburogh
CoI: Anthony Moffat, Universite de Montreal
CoI: Michael Corcoran, NASA Goddard Space Flight Center
CoI: Gerd Weigelt, Max Planck Institute fur Radioastronomie
CoI: Kenji Hamaguchi, NASA Goddard Space Flight Center
CoI: Joshua Thomas, Clarkson University
CoI: Andrew Pollock, European Space Agency
Title: Pinpointing the location of dust formation in the archetype colliding- winds system WR 140 with the CHARA Array
Abstract: We propose to use the imaging capabilities at the CHARA Array to image directly the onset of dust formation in the WR 140 system. This system is well studied across the electromagnetic spectrum, and provides a unique laboratory for measuring the dust formation due to its known double-lined spectroscopic and visual orbit. No other dust-producing WC binary has the potential for resolving the exact point of dust condensation due to several factors including distance, lack of visual orbits, or continuous dust formation rather than episodic. The upcoming 2016 December periastron passage of WR 140 will allow us to study the dust condensation in great spatial detail as the binary moves away from periastron in 2017 March. The CHARA observations will then allow us to compare with sophisticated models of the wind-wind collisions in the system and determine how dust forms in such hostile environments.
Program Type: Standard/Galactic
Run 1 (2017A): CHARA/MIRC -- 10hrs
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360