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arXiv:0711.4216 (astro-ph)
[Submitted on 27 Nov 2007]

Title:Highly deuterated pre-stellar cores in a high-mass star formation region

Authors:F. Fontani, P. Caselli, T.L. Bourke, R. Cesaroni, J. Brand
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Abstract: We have observed the deuterated gas in the high-mass star formation region IRAS 05345+3157 at high-angular resolution, in order to determine the morphology and the nature of such gas. We have mapped the N2H+ (1-0) line with the Plateau de Bure Interferometer, and the N2D+ (3-2) and N2H+ (3-2) lines with the Submillimeter Array. The N2D+ (3-2) integrated emission is concentrated in two condensations, with masses of 2-3 and 9 M_sun and diameters of 0.05 and 0.09 pc, respectively. The high deuterium fractionation (0.1) and the line parameters in the N2D+ condensations indicate that they are likely low- to intermediate-mass pre-stellar cores, even though other scenarios are possible.
Comments: 4 pages, 2 figures, accepted for publication in Astronomy and Astrophysics
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0711.4216 [astro-ph]
  (or arXiv:0711.4216v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.4216
Related DOI: https://doi.org/10.1051/0004-6361%3A20078973

Submission history

From: Francesco Fontani [view email]
[v1] Tue, 27 Nov 2007 10:17:10 UTC (111 KB)
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