Simulated multibeam observations of Be stars in the H-alpha line using the Navy prototype optical interferometer

G. Charmaine Gilbreath; Thomas A. Pauls; J. Thomas Armstrong; David Mozurkewich; James A. Benson; Robert B. Hindsley; Daniel Driscoll

doi:10.1117/12.459683

21 February 2003 Simulated multibeam observations of Be stars in the H-alpha line using the Navy prototype optical interferometer

G. Charmaine Gilbreath, Thomas A. Pauls, J. Thomas Armstrong, David Mozurkewich, James A. Benson, Robert B. Hindsley, Daniel Driscoll

Author Affiliations +

Proceedings Volume 4838, Interferometry for Optical Astronomy II; (2003) https://doi.org/10.1117/12.459683
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

The Navy Prototype Optical Interferometer has recently been equipped with specially-designed filters that pass Hα emission in a 2.5 nm band, suppress the continuum 50 nm to either side, and pass the continuum further from the Hα line. These filters allow fringe tracking on continuum light while taking data at Hα. Five- and six-aperture NPOI configurations have also been implemented recently. The improvement in U-V coverage with these configurations promises greater image fidelity in multi-spectral imaging as well as in specific lines, such as the very interesting Hα line. Using an array simulator operating in the AIPS++ environment, we simulate observations of Hα emission, assuming approximate source structure taken from earlier work in the literature. These simulations demonstrate the increased imaging capability of multi-aperture arrays and help define optimum Hα observation strategies.

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G. Charmaine Gilbreath, Thomas A. Pauls, J. Thomas Armstrong, David Mozurkewich, James A. Benson, Robert B. Hindsley, and Daniel Driscoll "Simulated multibeam observations of Be stars in the H-alpha line using the Navy prototype optical interferometer", Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); https://doi.org/10.1117/12.459683

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