A Search for Symmetries in the Star Formation Patterns of Spiral Disks: Barred Galaxies

M. Rozas; J.E. Beckman; J. Knapen

A Search for Symmetries in the Star Formation Patterns of Spiral Disks: Barred Galaxies

M. Rozas, J.E. Beckman, J. Knapen

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Abstract

The Ha brightness distribution of a face-on galaxy is a classical representation of the massive star formation rate per unit surface area. Here, we present a test for the degree of symmetry in this distribution, aimed at deciding whether this parameter shows a significant difference between barred and non-barred galaxies. The test consists in deriving the cross-correlation function of the Ha brightness as a function of curvilinear distance along pairs of opposed arms. In order to use the test, we first apply a geometrical unfolding technique. Here we explain this technique, and present the initial results of applying the test to NGC 157 and NGC 6764.

Original language	English
Title of host publication	In: Barred galaxies, ASP Conference Series 91
Publisher	Astronomical Society of the Pacific
Pages	117-119
ISBN (Print)	1-886733-12-0
Publication status	Published - 1996

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title = "A Search for Symmetries in the Star Formation Patterns of Spiral Disks: Barred Galaxies",

abstract = "The Ha brightness distribution of a face-on galaxy is a classical representation of the massive star formation rate per unit surface area. Here, we present a test for the degree of symmetry in this distribution, aimed at deciding whether this parameter shows a significant difference between barred and non-barred galaxies. The test consists in deriving the cross-correlation function of the Ha brightness as a function of curvilinear distance along pairs of opposed arms. In order to use the test, we first apply a geometrical unfolding technique. Here we explain this technique, and present the initial results of applying the test to NGC 157 and NGC 6764.",

author = "M. Rozas and J.E. Beckman and J. Knapen",

note = "Original paper can be found at: http://www.astrosociety.org/pubs/cs/070-112.html--Copyright Astronomical Society of the Pacific",

year = "1996",

language = "English",

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pages = "117--119",

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T1 - A Search for Symmetries in the Star Formation Patterns of Spiral Disks: Barred Galaxies

AU - Rozas, M.

AU - Beckman, J.E.

AU - Knapen, J.

N1 - Original paper can be found at: http://www.astrosociety.org/pubs/cs/070-112.html--Copyright Astronomical Society of the Pacific

PY - 1996

Y1 - 1996

N2 - The Ha brightness distribution of a face-on galaxy is a classical representation of the massive star formation rate per unit surface area. Here, we present a test for the degree of symmetry in this distribution, aimed at deciding whether this parameter shows a significant difference between barred and non-barred galaxies. The test consists in deriving the cross-correlation function of the Ha brightness as a function of curvilinear distance along pairs of opposed arms. In order to use the test, we first apply a geometrical unfolding technique. Here we explain this technique, and present the initial results of applying the test to NGC 157 and NGC 6764.

AB - The Ha brightness distribution of a face-on galaxy is a classical representation of the massive star formation rate per unit surface area. Here, we present a test for the degree of symmetry in this distribution, aimed at deciding whether this parameter shows a significant difference between barred and non-barred galaxies. The test consists in deriving the cross-correlation function of the Ha brightness as a function of curvilinear distance along pairs of opposed arms. In order to use the test, we first apply a geometrical unfolding technique. Here we explain this technique, and present the initial results of applying the test to NGC 157 and NGC 6764.

M3 - Conference contribution

SN - 1-886733-12-0

SP - 117

EP - 119

BT - In: Barred galaxies, ASP Conference Series 91

PB - Astronomical Society of the Pacific

ER -

A Search for Symmetries in the Star Formation Patterns of Spiral Disks: Barred Galaxies

Abstract

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