Hostname: page-component-f554764f5-c4bhq Total loading time: 0 Render date: 2025-04-11T03:43:22.972Z Has data issue: false hasContentIssue false
  • English
  • Français

Pulsations in the Nucleus of Planetary Nebula IC 418?

Published online by Cambridge University Press:  12 April 2016

E. Kuczawska  and
S. Zola
E. Kuczawska
Affiliation:
Mt Suhora Observatory, Pedagogical University, ul. Podchorazych 2, 30-084 Cracow, Poland
S. Zola
Affiliation:
Astronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Cracow, Poland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

IC 418 belongs to the group of about a dozen planetary nebulae with central stars that show irregular spectroscopic and photometric variations. Recent theoretical results provide arguments that this group may constitute a new class of pulsators. We present new photometric observations of the nucleus of IC 418 showing variations with a timescale of about 1/4 day. We discuss two possible explanations of the observed phenomena: pulsational instability and an unstable wind.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 155: Astrophysical Applications of Stellar Pulsation , 1995 , pp. 443 - 444
Copyright
Copyright © Astronomical Society of the Pacific 1995

References

Drissen, L. et al. 1989, ApJ, 343, 426 CrossRefGoogle Scholar
Gautschy, A. 1993, MNRAS, 265, 340 Google Scholar
Handler, G. et al. 1995, these proceedingsGoogle Scholar
Jerzykiewicz, M. 1994, private communicationGoogle Scholar
Kuczawska, E., Wlodarczyk, K., & Zola, S. 1995, A&A, in pressGoogle Scholar
Mendez, R.H., Verga, A., & Kriner, H. 1983, Rev. Mex. Astron. Astrofis., 8, 175 Google Scholar
Owocki, S.P., Castor, J.I., & Rybicki, G.B. 1988, ApJ, 335, 914 CrossRefGoogle Scholar
Pauldrach, A., & Puls, J. 1990, A&A, 237, 409 Google Scholar
Rybicki, G.B., Owocki, S.P., & Castor, J.I. 1990, ApJ, 349, 274 CrossRefGoogle Scholar