The Nature of the Dense Core Population in the Pipe Nebula: A Survey of NH3, CCS, and HC5N Molecular Line Emission

J. M. Rathborne, C. J. Lada, A. A. Muench, J. F. Alves, M. Lombardi

Publications: Contribution to journalArticlePeer Reviewed

Abstract

Recent extinction studies of the Pipe Nebula (d=130 pc) reveal many cores spanning a range in mass from 0.2 to 20.4 Msolar. These dense cores were identified via their high extinction and comprise a starless population in a very early stage of development. Here we present a survey of NH3 (1,1), NH3 (2,2), CCS(21-10), and HC5N (9,8) emission toward46 of these cores. An atlas of the 2MASS extinction maps is also presented. In total, we detect 63% of the cores in NH3 (1,1),22% in NH 3 (2,2), 28% in CCS, and 9% in HC5Nemission. We find the cores are associated with dense gas(~104 cm-3) with 9.5 K
Original languageEnglish
Pages (from-to)396-425
JournalThe Astrophysical Journal Supplement Series
Volume174
Issue number2
DOIs
Publication statusPublished - 1 Feb 2008

Austrian Fields of Science 2012

  • 103004 Astrophysics

Keywords

  • ISM: Dust
  • Extinction
  • ISM: Globules
  • ISM: Molecules
  • Stars: Formation

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