Possible emission lines from the gaseous β Pictoris disk
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چکیده
We present the results of exploratory HST observations to detect the emission lines of ions in the β Pictoris disk with the spectrograph slit placed off the star. Possible emission lines from Fe ii have been detected at ∼ 10 −14 erg cm −2 s −1 at 0.5 from β Pictoris, which would suggest a total Fe ii density of > ∼ 2 · 10 −2 cm −3 at 10 AU. This detection needs confirmation. If real, it requires a large production rate of gas and dust equivalent to the total disruption of ten bodies 30 kilometers in radius per year.
منابع مشابه
Possible spectral lines from the gaseous β Pictoris disk
We present the results of exploratory HST observations to detect the emission lines of ions in the β Pictoris disk with the spectrograph slit placed off the star. Possible emission lines from Fe ii have been detected at ∼ 10 −14 erg cm −2 s −1 at 0.5 ′′ from β Pictoris, which would suggest a total Fe ii density of > ∼ 2 · 10 −2 cm −3 at 10 AU. This detection needs confirmation. If real, it requ...
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تاریخ انتشار 2000