Cut-off radii of galactic disks: A statistical study on the truncation of galactic disks

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dc.creatorPohlen, M.
dc.creatorDettmar, R. -J.
dc.creatorLuetticke, R.
dc.date2000-03-24
dc.date2000-06-23
dc.date.accessioned2026-07-07T01:52:54Z
dc.date.available2026-07-07T01:52:54Z
dc.descriptionWe present the analysis of a CCD survey of 31 nearby (<= 110 Mpc) edge-on spiral galaxies. The three-dimensional one-component best fit models provide their disk-scalelengths h and for the first time their disk cut-off radii R_{co}. We confirm for this sample the existence of such sharp truncations, and find a significantly lower mean value of the distance independent ratio R_{co}/h =2.9 +- 0.7 than the standard value of 4.5 often used in the literature. Our data show no correlation of these parameters with Hubble type, whereas we report a correlation between R_{co}/h and the distance based scalelength in linear units. Compared to the Milky Way we find only lower values of R_{co}/h, explained either by possible selection effects or by the completely different techniques used. We discuss our data in respect to present models for the origin of the cut-off radii, either as a relict of the galaxy formation process, or as an evolutionary phenomenon.
dc.descriptionLaTeX, 4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0003384
dc.identifierhttp://arxiv.org/abs/astro-ph/0003384
dc.identifierA&A 357, L1 (2000)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/779
dc.subjectAstrophysics
dc.titleCut-off radii of galactic disks: A statistical study on the truncation of galactic disks
dc.typetext

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