The planetary nebula NGC 6572

Details The planetary nebula NGC 6572 The planetary nebula NGC 6572

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176..323g&link_type=abstract

In ESA 3rd European IUE Conf. p 323-325 (SEE N83-11889 02-88)

Physics

2

Planetary Nebulae, Stellar Spectra, Stellar Winds, Ultraviolet Spectra, Wind Velocity, Abundance, Carbon, Emission Spectra, Nitrogen, Oxygen, Spectral Energy Distribution, Stellar Atmospheres

Scientific paper

The IUE satellite observed the UV spectrum of the medium excitation planetary nebula NGC 6572 in low and high resolution. The overall UV continuum energy distribution (extinction corrected) can be fitted by a black body with T = 44,000 K. From the P-Cygni profiles seen in the C IV 1550 A, N V 1240 A, and in the O V 1371 A lines, wind velocities = 1860 km/sec, 2240 km/sec, and 1420 km/sec, respectively. Absolute fluxes are given for a number of emission line features. Those arising from C, N, and O are discussed and abundances relative to H II are determined for these elements. A ratio n (C) / n (O) = 1.2, which differs significantly from the solar value, is found.

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