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A new automatic method to identify galaxy mergers - I. Description and application to the Space Telescope A901/902 Galaxy Evolution Survey

Abstract:

We present a new automatic method to identify galaxy mergers using the morphological information contained in the residual images of galaxies after the subtraction of a smooth Sérsic model. The removal of the bulk signal from the host galaxy light is done with the aim of detecting the much fainter and elusive minor mergers. The specific morphological parameters that are used in the merger diagnostic suggested here are the residual flux fraction (RFF) and the asymmetry of the residuals [A(Res)...

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Publication status:
Published

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Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
419
Issue:
3
Pages:
2703-2724
Publication date:
2012-01-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:4612627d-5341-4cf5-bf82-7028feeb763b
Source identifiers:
314209
Local pid:
pubs:314209

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