The Stars and Gas in Outer Parts of Galaxy Disks: Extended or Truncated, Flat or Warped?

P. C. van der Kruit*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

Samenvatting

I review observations of truncations of stellar disks and models for their origin, compare observations of truncations in moderately inclined galaxies to those in edge-on systems and discuss the relation between truncations and H I-warps and their systematics and origin. Truncations are a common feature in edge-on stellar disks, but the relation of truncations in face-on to those in edge-on galaxies needs further clarification. The origin of truncations is most likely related to a maximum in the specific angular momentum in the material that formed the stellar disks, but this model does probably require some redistribution of angular momentum. H I-warps start just beyond the truncation radius and disks and warps appear distinct components. This suggests that inner disks form initially and settle as rigid, very flat structures, while H I-warps result from later infall of gas with a different orientation of the angular momentum.

Originele taal-2English
TitelFORMATION AND EVOLUTION OF GALAXY DISKS
RedacteurenJG Funes, EM Corsini
Plaats van productieSAN FRANCISCO
UitgeverijASTRONOMICAL SOC PACIFIC
Pagina's173-181
Aantal pagina's9
ISBN van geprinte versie978-1-58381-662-2
StatusPublished - 2008
EvenementInternational Conference on Formation and Evolution of Galaxy Disks - , Italy
Duur: 1-okt-20075-okt-2007

Publicatie series

NaamASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
UitgeverijASTRONOMICAL SOC PACIFIC
Volume396

Other

OtherInternational Conference on Formation and Evolution of Galaxy Disks
Land/RegioItaly
Periode01/10/200705/10/2007

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