The outer disks of galaxies: "To be or not to be truncated?"
arXiv:astro-ph/0509057 · doi:10.1007/978-1-4020-5573-7_41
Abstract
We have in recent years come to view the outer parts of galaxies as having vital clues about their formation and evolution. Here, we would like to briefly present our results from a complete sample of nearby, late-type, spiral galaxies, using data from the SDSS survey, especially focused on the stellar light distribution in the outer disk. Our study shows that only the minority of late-type galaxies show a classical, exponential Freeman Type I profile down to the noise limit, whereas the majority exhibit either downbending (stellar truncation as introduced 1979 by Piet van der Kruit) or upbending profiles.
arXiv commentLaTeX, 6 pages. To appear in the proceedings of the "Island Universes: Structure and Evolution of Disk Galaxies" conference held in Terschelling, Netherlands, July 2005, ed. R. de Jong (Springer: Dordrecht)
References in corpus (10)
- The u'g'r'i'z' Standard Star Network
- Star formation thresholds and galaxy edges: why and where
- Star Formation Thresholds in Galactic Disks
- Flattening and truncation of stellar discs in edge-on spiral galaxies
- Anti-Truncation of Disks in Early-Type Barred Galaxies
- Stellar disk truncations at high-z: probing inside-out galaxy formation
- Radially truncated galactic discs
- Truncation of stellar disks in galaxies at z~1
- Near infrared observations of the truncation of stellar disks
- Stellar Disk Truncations: Where do we stand ?