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rdac:C10001 bibo:Article

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dcterms:subject

n5:cosmologyincludingclustersofgalaxies n9:galaxiesstructure n9:galaxiesspiral

dcterms:title

Properties of disks and spiral arms along the Hubble sequence

dcterms:date

2002-01-01

rdaw:P10072

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n11:1

marcrel:aut

n17:b74df323e3939b563635a2cba7a7afba

dcterms:abstract

This paper presents some new statistical correlations between the properties of disks and of spiral arms with some physical properties of galaxies. Our results show that the thickness of spiral disks tends to diminish along the Hubble sequence in the sense that disks of Sc galaxies are 40% thinner than disks of Sab-Sb galaxies. Moreover, the thinner disks tend also to be bluer. We also find that there exists a correlation between HI linewidths and arm pattern within each Hubble type, which suggests that the arm shape is partially determined by the mass of a galaxy. Total mass luminosity ratios and total mass surface densities also have correlations with pitch angles i.e., for disks with lower surface densities and lower total mass luminosity ratios, the pitch angles tend to be greater.

hub:articleType

n12:researcharticle

hub:publisher-id

aa2176

dcterms:dateCopyrighted

2002-01-01

dcterms:rights

© ESO, 2002

dcterms:rightsHolder

ESO

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n7:w