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Erratum
This article is an erratum for: [this article]

Issue
A&A
Volume 551, March 2013
Article Number C1
Number of page(s) 1
Section Letters
DOI https://doi.org/10.1051/0004-6361/201118566e
Published online 11 February 2013

The paper by Schneider et al. (2012) contains an error in Sect. 2.2 and in Fig. 6. The bottom y-axis label of Fig. 6 must read “PDF(η)” instead of “log 10PDF(η)”. The corrected version of the figure is shown in Fig. 1 here. In Sect. 2.2 of Schneider et al. (2012), the slope fitted to the high-density tail of the composite PDF, Fig. 6 (here Fig. 1), in Rosette was wrongly quoted to correspond to a radial volumetric density profile n ∝ r-0.65. The value of the slope −0.65 actually corresponds to the radial column density profile, N ∝ r-0.65. Since n ∝ N/r, this translates into the equivalent volumetric density profile, n ∝ r-1.65 (see the derivation of the relation between PDF slopes and (column) density profiles in Federrath & Klessen 2013). Hence the statement in Sect. 2.2 is incorrect, i.e., that the “exponent is smaller than what is typically found for dense cores (−1.5 to −2), suggesting that on large (cloud)-scales, turbulence is the dominating process compared to gravity”. The corrected value n ∝ r-1.65 is much closer to what is found in related studies (e.g., Arzoumanian et al. 2011) and suggests that gravitational collapse – at least locally – does play an important role in Rosette and likely is the reason for the high-density power-law tail in Fig. 1.

thumbnail Fig. 1

Corrected version of Fig. 6 in Schneider et al. (2012).

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References


© ESO, 2013

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