A Study of Extra-Planar HI Gas: ANGC7814 and UGC1281

OnderzoeksoutputAcademicpeer review

Samenvatting

The origin of Hi at anomalous velocities and at large distances above the disk, detected in a few spiral galaxies, is still a puzzle. To improve on our understanding of this extra-planar gas, we have started a study of a representative sample of nearby edge-on galaxies. In this paper we present the observations and a preliminary analysis of the extra-planar gas of UGC 1281 and NGC 7814. These galaxies were observed with the WSRT for 4 × 12 hours. In the dwarf galaxy UGC 1281, there are clear indications of a gaseous halo. A preliminary analysis of NGC 7814 shows no halo; however, we have detected extra-planar gas, at velocities higher than the maximal rotational velocity, above and below the plane. The origin of this gas is unclear.

Originele taal-2English
TitelIsland Universes
SubtitelStructure and Evolution of Disk Galaxies
RedacteurenR.S. De Jong
UitgeverijSpringer
Pagina's303-306
Aantal pagina's4
ISBN van elektronische versie978-1-4020-5573-7
ISBN van geprinte versie978-1-4020-5572-0, 978-90-481-7398-3
DOI's
StatusPublished - 2007
EvenementInternational Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005 - Terschelling, Netherlands
Duur: 3-jul.-20055-jul.-2005

Publicatie series

NaamAstrophysics and Space Science Proceedings
ISSN van geprinte versie1570-6591
ISSN van elektronische versie1570-6605

Conference

ConferenceInternational Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005
Land/RegioNetherlands
StadTerschelling
Periode03/07/200505/07/2005

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