@inproceedings{cccefb58d88c4f689624b45f9a136bb3,
title = "The Stars and Gas in Outer Parts of Galaxy Disks: Extended or Truncated, Flat or Warped?",
abstract = "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.",
keywords = "ON SPIRAL GALAXIES, BAND SURFACE PHOTOMETRY, GALACTIC DISKS, 3-DIMENSIONAL DISTRIBUTION, STELLAR DISKS, DOMINATED GALAXIES, LIGHT, ROTATION, MASS",
author = "{van der Kruit}, {P. C.}",
year = "2008",
language = "English",
isbn = "978-1-58381-662-2",
series = "ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES",
publisher = "ASTRONOMICAL SOC PACIFIC",
pages = "173--181",
editor = "JG Funes and EM Corsini",
booktitle = "FORMATION AND EVOLUTION OF GALAXY DISKS",
note = "International Conference on Formation and Evolution of Galaxy Disks ; Conference date: 01-10-2007 Through 05-10-2007",
}