2013
DOI: 10.1088/0004-637x/781/1/12
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MORPHOLOGICAL PARAMETERS OF ASPITZERSURVEY OF STELLAR STRUCTURE IN GALAXIES

Abstract: The morphology of galaxies can be quantified to some degree using a set of scale-invariant parameters. Concentration (C), asymmetry (A), smoothness (S), the Gini index (G), the relative contribution of the brightest pixels to the secondorder moment of the flux (M 20), ellipticity (E), and the Gini index of the second-order moment (G M) have all been applied to morphologically classify galaxies at various wavelengths. Here, we present a catalog of these parameters for the Spitzer Survey of stellar structure in … Show more

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Cited by 38 publications
(40 citation statements)
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“…The point of the galaxy of minimum asymmetry is generally close to its brightest pixel, but not necessarily to the SExtractor centroid. The concentration (C minA ) at minimum asymmetry was then calculated from the r minA 80 /r minA 20 ratio Lotz et al 2006;Jiang et al 2013;Holwerda et al 2014). Bershady et al (2000) defined C by measuring photometry inside circular apertures.…”
Section: Discussionmentioning
confidence: 99%
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“…The point of the galaxy of minimum asymmetry is generally close to its brightest pixel, but not necessarily to the SExtractor centroid. The concentration (C minA ) at minimum asymmetry was then calculated from the r minA 80 /r minA 20 ratio Lotz et al 2006;Jiang et al 2013;Holwerda et al 2014). Bershady et al (2000) defined C by measuring photometry inside circular apertures.…”
Section: Discussionmentioning
confidence: 99%
“…f i (i = 1 to n) correspond to the pixel values within the chosen segmentation map, but sorted in decreasing order; x c and y c are the pixels corresponding to SEx centroid. A first value of G (G rP20 ) was estimated within the first segmentation map (Lotz et al 2004(Lotz et al , 2006Jiang et al 2013;Holwerda et al 2014). A second value (G S B−rP20S ) was estimated within the second segmentation map.…”
Section: Discussionmentioning
confidence: 99%
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“…The data have been made public 1 . The first papers resulting from S 4 G survey have been summarised in Holwerda et al (2014).…”
mentioning
confidence: 99%
“…Its two spiral arms with the outer ring structure do not show any non-axisymmetric signature. At a first glance, one may consider that NGC 1068 is a spiral galaxy without any sign of galaxy interaction (Holwerda et al 2014). However, any signatures of past dynamical disturbance is often found at faint outer envelope regions of galaxies (e.g., Martínez-Delgado et al 2010).…”
Section: Distorted Outer Structures Of Ngc 1068mentioning
confidence: 99%