Photo-ionization induced rapid grain growth in novae

S. N. Shore, R. D. Gehrz

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

An elementary model is developed for grain growth during the expansion stage of nova ejecta. Rather than suppressing grain formation, we argue that agglomeration of atoms by dust nuclei proceeds kinetically through induced dipole reactions in a partially ionized medium. Ionization of a cluster increases once the ejecta become transparent in the ultraviolet which triggers runaway grain growth. This mechanism may also be important in other dust-forming hot stars such as Luminous Blue Variables and Wolf-Rayet systems.

Original languageEnglish (US)
Pages (from-to)695-699
Number of pages5
JournalAstronomy and Astrophysics
Volume417
Issue number2
DOIs
StatePublished - Apr 2004

Keywords

  • ISM: dust, extinction
  • Stars: mass-loss
  • Stars: novae, cataclysmic variables

Fingerprint Dive into the research topics of 'Photo-ionization induced rapid grain growth in novae'. Together they form a unique fingerprint.

Cite this