A search for Compact High-Velocity Clouds (De Heij+, 2002)

Details A search for Compact High-Velocity Clouds (De Heij+, 2002) A search for Compact High-Velocity Clouds (De Heij+, 2002)

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..33910159d&link_type=abstract

VizieR On-line Data Catalog: J/A+A/391/159. Originally published in: 2002A&A...391..159D

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Interstellar Medium, H I Data

Scientific paper

An automated search is applied to the Leiden/Dwingeloo HI Survey (LDS) for high-velocity clouds north of Dec.=-28°. From the general catalog we extract a sample of relatively small (less than about 8°) and isolated high-velocity clouds, CHVCs: anomalous-velocity HI clouds which are sharply bounded in angular extent with no kinematic or spatial connection to other HI features down to a limiting column density of 1.5x1018cm-2. Unambiguously isolated objects are given the "CHVC" designation, while those with some degree of ambiguity in this classification or designated "CHVC:" or "CHVC?". The vast majority of features show diffuse connections at low column densities with the extended HVC complexes and are simply designated as "HVC" features. The automated search algorithm has been applied to the HIPASS and to the Leiden/Dwingeloo data sets. The results from the LDS are described here; Putman et al. (2002, Cat. ) describe application of this algorithm to the HIPASS material. Only those catalog entries which have and additional ID listed have been confirmed in independent data.
(1 data file).

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