Galaxy And Mass Assembly (GAMA): refining the local galaxy merger rate using morphological information

We use the Galaxy And Mass Assembly (GAMA) survey to measure the local Universe mass-dependent merger fraction and merger rate using galaxy pairs and the CAS (concentration, asymmetry, and smoothness) structural method, which identifies highly asymmetric merger candidate galaxies. Our goals are to d...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2014-12, Vol.445 (2), p.1157-1157
Hauptverfasser:	Casteels, Kevin RV, Conselice, Christopher J, Bamford, Steven P, Salvador-Sole, Eduard, Norberg, Peder R, Agius, Nicola K, Baldry, Ivan, Brough, Sarah, Brown, Michael JI, Drinkwater, Michael J, Driver, Simon P, Graham, Alister W, Bland-Hawthorn, Joss, Hopkins, Andrew M, Kelvin, Lee S, Lopez-Sanchez, Angel R, Loveday, Jon, Robotham, Aaron SG, Vazquez-Mata, Jose A
Format:	Artikel
Sprache:	eng
Schlagworte:	Assembly Astronomia Astronomy Asymmetry Constants Evolució de les galàxies Galaxies evolution Galaxy mergers & collisions Line of sight Mass ratios Mathematical analysis Star & galaxy formation Universe Velocity
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Zusammenfassung:	We use the Galaxy And Mass Assembly (GAMA) survey to measure the local Universe mass-dependent merger fraction and merger rate using galaxy pairs and the CAS (concentration, asymmetry, and smoothness) structural method, which identifies highly asymmetric merger candidate galaxies. Our goals are to determine which types of mergers produce highly asymmetrical galaxies and to provide a new measurement of the local galaxy major merger rate. We examine galaxy pairs at stellar mass limits down to M* = 10... M... with mass ratios of
ISSN:	0035-8711 1365-2966
DOI:	10.1093/mnras/stu1799