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usic:navy_prototype_opticalinterferometer_npoi

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NPOI.Usic.jpg

Navy Precision Optical Interferometer ([[http://www.nofs.navy.mil/projects/npoi/|NPOI]])


From the highest angular resolution Ha observations to date, NPOI found the Be stars g Cas and f Per to have circum-stellar emission consistent with a Gaussian intensity distribution rather than a uniform disk or ring-like structure.

In 2002, NPOI accomplished the first 6-telescope image by O/IR interferometry, producing an image of the triple system h Vir.

NPOI observations show that Vega is a pole-on rapid rotator spinning at 93% of its breakup speed, with more than 2400 K difference in temp-erature from pole to equator. The temperature variation accounts for Vega’s near-IR excess and explains why no single atmospheric model accounts for its spectrum.

usic/navy_prototype_opticalinterferometer_npoi.1530899149.txt.gz · Last modified: 2018/07/06 17:45 by 127.0.0.1