Physical parameters for 12 planetary nebulae and their central stars in the Magellanic Clouds

Statistics – Computation

Scientific paper

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Astrophysics, Magellanic Clouds, Planetary Nebulae, Stellar Mass, Ultraviolet Spectra, Chemical Composition, Computational Astrophysics, Nuclear Reactions, Physical Properties

Scientific paper

Nebular and central star parameters and elemental abundances of C, N, O, Ne, S, and Ar are presented for the planetary nebulae N2, N5, N43, N54, and N67 in the SMC and P2, P7, P9, P25, P33, and P40 in the LMC. The nebular chemical compositions are affected by nuclear processes in the precursor stars, which may not have been sufficiently massive to synthesize Ne, S, or Ar, which appear to be deficient with respect to their solar abundances by factors of roughly four and five for the LMC and SMC, respectively. Even after excluding nebulae formed by stars in which O apparently was destroyed by nuclear processes, O depletion in the LMC and SMC nebulae is significantly greater than in galactic planetaries. The estimated masses of the 12 remnant central stars range from 0.58 to 0.71 solar mass.

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