The Carina Flare. What can fragments in the wall tell us?

R. Wünsch; P. Jáchym; V. Sidorin; S. Ehlerová; J. Palous; J.~R. Dawson; Y. Fukui; James Dale

doi:10.1051/0004-6361/201118061

The Carina Flare. What can fragments in the wall tell us?

R. Wünsch, P. Jáchym, V. Sidorin, S. Ehlerová, J. Palous, J.~R. Dawson, Y. Fukui, James Dale

Centre for Astrophysics Research (CAR)

Research output: Contribution to journal › Article › peer-review

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Abstract

13CO(J = 2–1) and C18O(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 language	English
Pages (from-to)	A116
Number of pages	19
Journal	Astronomy & Astrophysics
Volume	539
DOIs	https://doi.org/10.1051/0004-6361/201118061
Publication status	Published - 2 Mar 2012

Keywords

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

Access to Document

10.1051/0004-6361/201118061

aa18061-11Final published version, 4.38 MB

Cite this

@article{aabad11c3151450db3dc0e67005b27a3,

title = "The Carina Flare. What can fragments in the wall tell us?",

abstract = "13CO(J = 2–1) and C18O(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.",

keywords = "ISM: molecules, stars: formation, stars: winds, outflows, Galaxy: structure, ISM: structure",

author = "R. W{\"u}nsch and P. J{\'a}chym and V. Sidorin and S. Ehlerov{\'a} and J. Palous and J.~R. Dawson and Y. Fukui and James Dale",

note = "R. W{\"u}nsch, P. J{\'a}chym, V. Sidorin, S. Ehlerov{\'a}, J. Palou{\v s}, J. Dale, J. R. Dawson, and Y. Fukui, 'The Carina Flare: What can fragments in the wall tell us?', Astronomy & Astrophysics, Vol. 539, A116, March 2012. The version of record is available online at DOI: 10.1051/0004-6361/201118061. Article published by EDP Sciences. {\textcopyright} ESO, 2012.",

year = "2012",

month = mar,

day = "2",

doi = "10.1051/0004-6361/201118061",

language = "English",

volume = "539",

pages = "A116",

journal = "Astronomy & Astrophysics",