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A&A 375, 227 (2001) DOI: 10.1051/0004-6361:20010876 c ESO 2001

Astronomy

&

Astrophysics

Erratum

Arecibo imaging of compact high–velocity clouds

W. B. Burton1, R. Braun2, and J. N. Chengalur3

1

Sterrewacht Leiden, PO Box 9513, 2300 RA Leiden, The Netherlands 2

Netherlands Foundation for Research in Astronomy, PO Box 2, 7990 AA Dwingeloo, The Netherlands 3 National Centre for Radio Astrophysics, Post Bag 3, Ganeshkind PO, Pune, Maharashtra 411 007, India

A&A, 369, 616–642 (2001), DOI: 10.1051/0004–6361:20010162

Abstract. An arithmetic error in the numerical values of outer disk H i exponential scale-lengths in late-type

dwarf galaxies is corrected. None of the other derived quantities in this publication are affected by this error. In particular, the distance estimates to the objects studied based on the mean outer disk scale-length remains in the range 320 to 730 kpc.

Key words. ISM: atoms – ISM: clouds – galaxy: evolution – galaxy: formation – galaxies: dwarf –

galaxies: local group

1. Outer disk scale-lengths in late-type dwarf galaxies

We have discovered an arithmetic error in our recent pub-lication (Burton et al. 2001), corresponding to exactly a factor of ten in the value of the exponential scale lengths,

he, of outer disk H i in the sample of 15 nearby late-type

dwarf galaxies which we took from Swaters (1999). The mean exponential scale-length value for this sample is actually he = 1.17± 0.44 kpc. The corresponding

scale-length of the modified Bessel function of order 1, hB, which

we use to represent the H i edge profiles of the compact high velocity clouds we studied, is 10% smaller, namely

hB = 1.06± 0.40 kpc. These are the numerical values

which should appear throughout the manuscript, specifi-cally (1) in the Abstract, (2) in the caption and column

Send offprint requests to: R. Braun, e-mail: rbraun@nfra.nl

heading of Table 2, (3) in the last paragraph of Sect. 8, (4) in the axis labeling and caption of Fig. 16 and (5) in the last paragraph of Sect. 9. None of the other derived quantities in the manuscript were affected by this error. In particular, the distance estimates to the objects studied based on the mean outer disk scale-length remains in the range 320 to 730 kpc.

References

Burton, W. B., Braun, R., & Chengalur, J. N. 2001, A&A, 369, 616

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