Barnard 59: No Evidence for Further Fragmentation

Author(s)

C. G. Román-Zúñiga, P. Frau, J. M. Girart, João F. Alves

Abstract

The dense molecular clump at the center of the Barnard 59 (B59) complex

is the only region in the Pipe Nebula that has formed a small, stellar

cluster. The previous analysis of a high-resolution near-IR dust

extinction map revealed that the nuclear region in B59 is a massive,

mostly quiescent clump of 18.9 M ⊙. The clump shows a

monolithic profile, possibly indicating that the clump is on the way to

collapse, with no evident fragmentation that could lead to another group

of star systems. In this paper, we present new analysis that compares

the dust extinction map with a new dust emission radio-continuum map of

higher spatial resolution. We confirm that the clump does not show any

significant evidence for prestellar fragmentation at scales smaller than

those probed previously.

Organisation(s)

Department of Astrophysics

External organisation(s)

Universidad Nacional Autonoma de Mexico, Spanish National Research Council (CSIC)

Journal

The Astrophysical Journal: an international review of astronomy and astronomical physics

Volume

747

Pages

149

ISSN

0004-637X

DOI

https://doi.org/10.1088/0004-637X/747/2/149

Publication date

03-2012

Peer reviewed

Yes

Austrian Fields of Science 2012

103004 Astrophysics, 103003 Astronomy

Keywords

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