The Carina Flare what can fragments in the wall tell us?

R. Wünsch*, P. Jáchym, V. Sidorin, S. Ehlerová, J. Palouš, J. Dale, J. R. Dawson, Y. Fukui

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

13CO(J = 2-1) and C 18O(J = 2-1) observations of the molecular cloud G285.90+4.53 (Cloud 16) in the Carina Flare supershell (GSH287+04-17) with the APEX telescope are presented. With an algorithm DENDROFIND we identify 51 fragments and compute their sizes and masses. We discuss their mass spectrum and interpret it as being the result of the shell fragmentation process described by the pressure assisted gravitational instability-PAGI. We conclude that the explanation of the clump mass function needs a combination of gravity with pressure external to the shell.

Original languageEnglish
Article numberA116
Pages (from-to)1-19
Number of pages19
JournalAstronomy and Astrophysics
Volume539
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Galaxy: structure
  • ISM: molecules
  • ISM: structure
  • stars: formation
  • stars: winds, outflows

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