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Hubble Space Telescope observations of Planetary Nebulae in the Magellanic Clouds

Published online by Cambridge University Press:  25 May 2016

M. A. Dopita ,
P. R. Wood ,
S. J. Meatheringham ,
E. Vassiliadis ,
R. C. Bohlin ,
H. C. Ford ,
J. P. Harrington ,
T. P. Stecher  and
S. P. Maran
M. A. Dopita
Affiliation:
Mt. Stromlo and Siding Spring Observatories IAS, The Australian National University
P. R. Wood
Affiliation:
Mt. Stromlo and Siding Spring Observatories IAS, The Australian National University
S. J. Meatheringham
Affiliation:
Mt. Stromlo and Siding Spring Observatories IAS, The Australian National University
E. Vassiliadis
Affiliation:
Instituto Astrofisica Canarias
R. C. Bohlin
Affiliation:
Space Telescope Science Institute
H. C. Ford
Affiliation:
Space Telescope Science Institute
J. P. Harrington
Affiliation:
Dept. of Astronomy, U. Maryland
T. P. Stecher
Affiliation:
NASA Goddard Space Flight Center
S. P. Maran
Affiliation:
NASA Goddard Space Flight Center

Abstract

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We present the results of our major HST study of the evolution of PN in the Magellanic Clouds. This consists of imaging studies in [O III] and FOS UV spectroscopy. These data are then used in theoretical photoionisation models in conjuction with ground-based spectrophotometry, absolute flux and expansion velocity and density to derive self consistent diameters, ages, masses, and nebular abundances and to accurately place the central stars on the H-R Diagram. We find that observed sizes and ages can be reconciled with evolutionary theory provided that the He-burners outnumber the H-burners in the approximate ratio 2:1. For the LMC observed abundance patterns are qualitatively consistent with the (mass-dependent) operation of the various chemical dredge-up processes as predicted by theory. However, the observed dredge-up efficiencies do not agree with current theory. Finally, since core masses are determined with adequate precision, we are able to derive, for the first time, the metallicity age relation for of the LMC. We find that the base metallicity of the LMC rapidly increased ∼ 2 Gyr ago, consistent with the age of the burst of star formation inferred from field stars and clusters.

Type
VIII. Planetary Nebulae in Extragalactic Systems
Information
Symposium - International Astronomical Union , Volume 180: Planetary Nebulae , 1997 , pp. 417 - 427
Copyright
Copyright © Kluwer 1997 

References

Aller, L.H. et al. (1987) ApJ, 320, 159.Google Scholar
Alongi, M. ae al. (1993) A&AS 97, 851.Google Scholar
Barlow, M. (1989) in IAU Symp. 131 Planetary Nebulae, ed. Torres-Peimbert, S., Kluwer:Dordrecht, p319.Google Scholar
Binette, L., Dopita, M.A. & Tuohy, I.R. (1985) ApJ, 297, 476.Google Scholar
Blades, J. C., et al. (1992) ApJ, 398, L41.Google Scholar
Blöker, T., and Schönberner, D. (1990) A&A, 240, L11.Google Scholar
Bressan, A., Fagotto, F., Bertelli, G. & Chiosi, C. (1993) A&AS, 100, 647.Google Scholar
Butcher, H.R. (1977) ApJ, 216, 372.Google Scholar
Chiosi, C. & Marigo, P. (1996) A&A, (in press).Google Scholar
Da Costa, G.S. (1991) in IAU Symp. 148, The Magellanic Clouds, eds. Haynes, R. and Milne, D., Kluwer: Dordrecht, p183.Google Scholar
Dopita, M.A. (1993) in IAU Symp 155 Planetary Nebulae, eds. Weinberger, R. and Acker, A., Kluwer:Dordrecht, p433.Google Scholar
Dopita, M. A., Ford, H. C., Lawrence, C. J., & Webster, B. L. (1985a), ApJ, 296, 390.Google Scholar
Dopita, M.A., Ford, H.C., & Webster, B.L. (1985b) ApJ, 297, 593.Google Scholar
Dopita, M. A. et al. (1993) ApJ, 418, 804.Google Scholar
Dopita, M.A., Jacoby, G.H., and Vassiliadis, E. (1992) ApJ, 389, 27.Google Scholar
Dopita, M.A., and Meatheringham, S.J. (1991a) ApJ, 367, 115.Google Scholar
Dopita, M.A., and Meatheringham, S.J. (1991b) ApJ, 377, 480.Google Scholar
Dopita, M.A., Meatheringham, S.J., Ford, H.C. & Webster, B.L. (1988) ApJ, 327, 651.Google Scholar
Dopita, M.A., et al. (1994) ApJ, 426, 150 (Paper II).CrossRefGoogle Scholar
Dopita, M.A., et al. (1996) ApJ (Paper IV).Google Scholar
Dopita, M.A., et al. (1997) ApJ, (Feb 1) (Paper V).Google Scholar
Dufour, R.J. (1991) PASP, 103, 857.Google Scholar
Frogel, J.A. & Blanco, V.C. (1983) ApJ, 274, L57.CrossRefGoogle Scholar
Gallagher, J.S. et al. (1996) ApJ, (in press).Google Scholar
Girardi, L., Chiosi, C., Bertelli, G. & Bressan, A. (1995), A&A, 298, 87.Google Scholar
Hardy, E., Buonanno, R., Corsi, C., Janes, K., & Schommer, R. (1984) ApJ, 278, 592.Google Scholar
Iben, I. Jr., and Renzini, A. (1983) A&A, 21, 271.Google Scholar
Jacoby, G. H. (1980) ApJS, 42, 1.Google Scholar
Jacoby, G. H., Ciardullo, R., & Walker, A. R. (1990) ApJ, 365, 471.CrossRefGoogle Scholar
Jacoby, G. H., and Kaler, J.B. (1993)ApJ, 417, 209.Google Scholar
Kaler, J.B. and Jacoby, G.H. (1990) ApJ, 362, 491.CrossRefGoogle Scholar
Kaler, J.B. and Jacoby, G.H. (1991) ApJ, 382, 134.Google Scholar
Kwok, S., Purton, C.R., & Fitzgerald, P.M. (1978) ApJ, 219, L125.Google Scholar
Leisy, P. and Dennefeld, M. A&A, (in press).Google Scholar
Marigo, P., Bressan, A. and Chiosi, C. (1996) A&A, (in press).Google Scholar
Meatheringham, S. J., & Dopita, M. A. (1991a) ApJS, 75, 407.Google Scholar
Meatheringham, S. J., & Dopita, M. A. (1991b) ApJS, 76, 1085.Google Scholar
Meatheringham, S. J., et al. (1988a) ApJ, 327, 651.Google Scholar
Meatheringham, S. J., Dopita, M. A., & Morgan, D. H. (1988b) ApJ, 329, 166.Google Scholar
Peimbert, M. (1995) in The Analysis of Emission Lines, STScI Symp. Ser. 8, eds. Williams, R.E. & Livio, M., (CUP:Cambridge), p165.CrossRefGoogle Scholar
Renzini, A. & Voli, M. (1981) A&A, 94, 175.Google Scholar
Russell, S.C., and Dopita, M.A. (1992) ApJ, 384, 508.Google Scholar
Schönberner, D. (1983) ApJ, 272, 708.Google Scholar
Stryker, L.L. (1983) ApJ, 266, 82.CrossRefGoogle Scholar
Stryker, L.L. (1984) ApJS, 55, 127.Google Scholar
Sutherland, R.S., and Dopita, M.A. (1993) ApJS, 88, 253.Google Scholar
Vassiliadis, E., et al. (1996) ApJS, 105, 375 (Paper III).Google Scholar
Vassiliadis, E., et al. (1997) in prep, (Paper VI).Google Scholar
Vassiliadis, E., & Wood, P.R. (1993) ApJ, 413, 641.CrossRefGoogle Scholar
Wiedemann, V. (1987) A&A, 188, 74.Google Scholar
Wood, P. R., Bessell, M.S., & Dopita, M. A. (1986) ApJ, 311, 632.Google Scholar
Wood, P. R. et al. (1987) ApJ, 320, 178.Google Scholar
Wood, P.R. and Vassiliadis, E. (1993), in IAU Symp. 155 Planetary Nebulae, eds. Weinberger, R. and Acker, A., Kluwer:Dordrecht, p465.Google Scholar