MWC 314: Binary results from optical interferometry compared with spectroscopy and photometry

Noel D. Richardson, University of Montreal
Anthony F.J. Moffat, University of Montreal
Raphaël Maltais-Tariant, University of Montreal
Herbert Pablo, University of Montreal
Douglas R. Gies, Georgia State University
Nicole St-Louis, University of Montreal
Gail Schaefer, Mount Wilson Observatory
Anatoly S. Miroshnichenko, The University of North Carolina at Greensboro
Chris Farrington, Mount Wilson Observatory
Emily J. Aldoretta, University of Montreal
Étienne Artigau, University of Montreal
Tabetha Boyajian, Yale University
Katie Gordon, Georgia State University
P. J. Goldfinger, Mount Wilson Observatory
Jeremy Jones, Georgia State University
Rachel Matson, Georgia State University
Harold A. McAlister, Georgia State University
David O'Brien, Max Planck Institute for Radio Astronomy
Deepak Raghavan, Georgia State University
Tahina Ramiaramanantsoa, University of Montreal
Stephen T. Ridgway, National Optical Astronomy Observatory
Nic Scott, Georgia State University
Judit Sturmann, Mount Wilson Observatory
Laszlo Sturmann, Mount Wilson Observatory
Theo Ten Brummelaar, Mount Wilson Observatory
Joshua D. Thomas, Clarkson University
Nils Turner, Mount Wilson Observatory
Norm Vargas, Mount Wilson Observatory
Sergey Zharikov, Universidad Nacional Autónoma de México


We initiated a multi-technique campaign to understand the physics and properties of the massive binary system MWC 314. Our observations included optical high-resolution spectroscopy and Johnson photometry, nearinfrared spectrophotometry, and K′-band long-baseline interferometry with the CHARA Array. Our results place strong constraints on the spectroscopic orbit, along with reasonable observations of the phase-locked photometric variability. Our interferometry, with input from the spectrophotometry, provides information on the geometry of the system that appears to consist of a primary star filling its Roche Lobe and loosing mass both onto a hidden companion and through the outer Lagrangian point, feeding a circumbinary disk. While the multi-faceted observing program is allowing us to place some constraints on the system, there is also a possibility that the outflow seen by CHARA is actually a jet and not a circumbinary disk.