Planetary nebulae with ISO: A58 and A78 - nebulae with hydrogen-poor ejecta

Details Planetary nebulae with ISO: A58 and A78 - nebulae with hydrogen-poor ejecta Planetary nebulae with ISO: A58 and A78 - nebulae with hydrogen-poor ejecta

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.296..614k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 296, Issue 3, pp. 614-618.

Astronomy and Astrophysics

Astronomy

17

Planetary Nebulae: Individual: A58, Planetary Nebulae: Individual: A78

Scientific paper

We present ISO observations of A58 and A78. Both objects are suspected to have undergone late He flashes (`born-again' nebulae). With ISOCAM we have been able to obtain data of much higher spatial resolution over the wavelength range 4.5-18 μm than has been possible in the past. In order to extract full information from our data we have developed a method to eliminate residual variations in the dark field. The results for A58 and A78 are compared with literature data and with A30 - the most prominent `born-again' planetary nebula (PN).

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