Dissecting Kinematics and Stellar Populations of Counter-Rotating Galaxies with 2-Dimensional Spectroscopy

2); (2) Institute of Cosmology; (3) Dipartimento di Fisica ed Astronomia 'Galileo Galilei'; 4); (4) INAF-Osservatorio Astronomico di Padova; A. Pizzella (3); E. Dalla Bonta' (3; E. M. Corsini (3; Garching bei Muenchen; Germany

arxiv: 1402.5346 · v1 · pith:IUBUJDMSnew · submitted 2014-02-21 · 🌌 astro-ph.GA · astro-ph.CO

Dissecting Kinematics and Stellar Populations of Counter-Rotating Galaxies with 2-Dimensional Spectroscopy

L. Coccato (1 , 2) , L. Morelli (3 , 4) , A. Pizzella (3) , E. M. Corsini (3 , E. Dalla Bonta' (3 , L. M. Buson (4) ((1) European Southern Observatory

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Garching bei Muenchen Germany (2) Institute of Cosmology Gravitation University of Portsmouth Portsmouth UK (3) Dipartimento di Fisica ed Astronomia 'Galileo Galilei' Universita' di Padova Padova Italy (4) INAF-Osservatorio Astronomico di Padova Italy)

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classification 🌌 astro-ph.GA astro-ph.CO

keywords galaxiescounter-rotatingstellardecompositiondiskskinematicspopulationsspectral

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We present a spectral decomposition technique and its applications to a sample of galaxies hosting large-scale counter-rotating stellar disks. Our spectral decomposition technique allows to separate and measure the kinematics and the properties of the stellar populations of both the two counter-rotating disks in the observed galaxies at the same time. Our results provide new insights on the epoch and mechanism of formation of these galaxies.

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Dissecting Kinematics and Stellar Populations of Counter-Rotating Galaxies with 2-Dimensional Spectroscopy

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