J/MNRAS/234/583 J/MNRAS/234/583 Abundances in Magellanic Cloud planetary nebulae D J Monk M J Barlow R E S Clegg Mon. Not. R. Astron. Soc. 234 583 1988 1988MNRAS.234..583M J/ApJS/75/407 : PNe Magellanic Cloud optical spectroscopy. I J/ApJS/76/1085 : PNe Magellanic Cloud optical spectroscopy. II J/ApJS/83/87 : PNe Magellanic Cloud optical spectroscopy. III J/A+AS/121/407 : LMC planetary nebulae positions (Leisy+ 1997) Magellanic Clouds Nebulae, planetary Spectroscopy Optical spectroscopic data for 71 Planetary Nebulae (PN) in the Large and Small Magellanic Clouds have been analysed. The line fluxes have been used to determine nebular temperatures, densities, and the abundances of He, N, O, Ne and Ar, relative to H. In our sample there are 12 nebulae with N/O>=0.5, resembling Peimbert's Type I PN; six low-excitation objects [1<=I(5007)/I(H{beat})<=4], and four very-low excitation (VLE) nebulae [I(H{beta})>I(5007)], similar to the Galactic VLE class. Mean abundances have been calculated for the nebulae not in these special groups. After correction for collisional excitation contributions to the nebular He I lines, PN in the SMC and LMC yield mass fractions of Y=0.249+/-0.025 and Y=0.258+/-0.012, respectively.

Lambda Wavelength 0.1nm ID Identification of the line --- PN Planetary nebula identification --- Name Planetary nebula name --- l_I(Lambda) limit flag on I(Lambda) --- I(Lambda) Measured line intensity (I(Hbeta)=100) --- u_I(Lambda) Uncertainty flag on I(Lambda) --- Patricia Bauer CDS 1996Oct03Pierre Leisy <leisy@iap.fr> J_MNRAS_234_583.xml