Physical conditions in the planetary nebula Abell 30
نویسندگان
چکیده
منابع مشابه
Physical conditions in the planetary nebula Abell 30
We have analysed optical spectra of two of the hydrogen-deficient knots (J1 & J3) in the born-again planetary nebula Abell 30, together with UV spectra of knots J3 & J4. We determine electron temperatures in the knots based on several diagnostics. The [O III] nebular-toauroral transition ratio yields temperatures of the order of 17 000 K. The weak temperature dependence of the ratios of helium ...
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We have constructed a photoionization model, using the 3-D Monte Carlo code MOCASSIN for one of the hydrogen-deficient knots (J3) of the born-again planetary nebula Abell 30. The model consists of spherical knots, comprising a cold, dense, hydrogen-deficient core with very high metal abundances. The inner core, occupying 9.1% of the total volume of the knot, is surrounded by a less dense hydrog...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2003
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2003.06289.x