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The Astrophysical Journal
Article . 2007 . Peer-reviewed
Data sources: Crossref
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https://dx.doi.org/10.48550/ar...
Article . 2006
License: arXiv Non-Exclusive Distribution
Data sources: Datacite
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Dependence of Galaxy Structure on Rest‐Frame Wavelength and Galaxy Type

Authors: Taylor-Mager, Violet; Conselice, Christopher; Windhorst, Rogier; Jansen, Rolf;

Dependence of Galaxy Structure on Rest‐Frame Wavelength and Galaxy Type

Abstract

We present a quantitative analysis of the morphologies for 199 nearby galaxies as parameterized with measurements of the concentration, asymmetry, and clumpiness (CAS) parameters at wavelengths from 0.15-0.85 micrometers. We find that these CAS parameters depend on both galaxy type and the wavelength of observation. As such, we use them to obtain a quantitative measure of the "morphological k-correction", i.e., the change in appearance of a galaxy with rest-frame wavelength. Whereas early-type galaxies (E--S0) appear about the same at all wavelengths longward of the Balmer break, there is a mild but significantly-determined wavelength-dependence of the CAS parameters for galaxies types later than S0, which generally become less concentrated, and more asymmetric and clumpy toward shorter wavelengths. Also, as a merger progresses from pre-merger via major-merger to merger-remnant stages, it evolves through the CAS parameter space, becoming first less concentrated and more asymmetric and clumpy, and then returning towards the "locus" of normal galaxies. The final merger products are, on average, much more concentrated than normal spiral galaxies.

28 pages, LaTeX2e, 17 figures, 9 tables, and a modified class file emulateapj_rj.cls are included. Accepted for publication in The Astrophysical Journal

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Keywords

Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
72
Top 10%
Top 10%
Top 10%
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