Ablation and wind mass-loading in the born-again planetary Nebula A 30

Martín A. Guerrero, You Hua Chu, Wolf Rainer Hamann, Lidia Oskinova, Detlef Schönberner, Helge Todt, Matthias Steffen, Nieves Ruiz, Robert A. Gruendl, William P. Blair

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present XMM-Newton and Chandra observations of the born-again planetary nebula A 30. These X-ray observations reveal a bright unresolved source at the position of the central star whose X-ray luminosity exceeds by far the model expectations for photospheric emission and for shocks within the stellar wind. We suggest that a "born-again hot bubble" may be responsible for this X-ray emission. Diffuse X-ray emission associated with the petal-like features and one of the H-poor knots seen in the optical is also found. The weakened emission of carbon lines in the spectrum of the diffuse emission can be interpreted as the dilution of stellar wind by mass-loading or as the detection of material ejected during a very late thermal pulse.

Original languageEnglish (US)
Title of host publicationPlanetary Nebulae
Subtitle of host publicationAn Eye to the Future
EditorsArturo Manchado, Letizia Stanghellini, Detlef Schonberner
Number of pages2
StatePublished - Jul 2011

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • X-rays: ISM
  • planetary nebulae: individual (A 30)

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science


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