Observations of Hα in Be stars with the Navy Prototype Optical Interferometer

Details Observations of Hα in Be stars with the Navy Prototype Optical Interferometer Observations of Hα in Be stars with the Navy Prototype Optical Interferometer

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5116p&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #51.16; Bulletin of the American Astronomical Society, Vol. 33, p.861

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Stars of spectral type Be are known to consist of a hot central star which is surrounded by an extended, optically thin disk. The disk is heated by the central star and radiates a number of bright emission lines, among them Hα . We have equipped the Navy Prototype Optical Interferometer (NPOI) with a set of custom narrow-band filters centered on the Hα line, and have used these filters to observe a number of Be stars with a 3-element sub-array. These are the first interferometric observations of Be stars which include a measurement of closure phase. We will present the results of our observations with these filters. Funding for the NPOI comes from the Office of Naval Research and the Oceanographer of the Navy.

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