Infrared photometry and imaging of P Cygni

Astronomical Society of the Pacific Conference Series(2001)

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摘要
We present new photometric and imaging observations of P Cygni at infrared wavelengths. The photometry shows little or no variability over the last 30 years at near IR wavelengths, but there may be some significant variability at thermal-IR wavelengths - probably due to density variations in the stellar wind, and not necessarily indicative of long-term variability. Near-IR imaging in hydrogen emission lines reveals, possibly some extended structure out to a few arcseconds from the star. elongated along a position angle of similar to115degrees.
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关键词
emission line,infrared,position angle
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