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 structural method, which identifies highly asymmetric merger candidate galaxies. Our goals are to determine which types of mergers produce hig...

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Veröffentlicht in:	arXiv.org 2014-09
Hauptverfasser:	Casteels, Kevin R V, Conselice, Christopher J, Bamford, Steven P, Salvador-Sole, Eduard, Norberg, Peder R, Agius, Nicola K, Baldry, Ivan, Brough, Sarah, Brown, Michael J I, 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 S G, Vazquez-Mata, Jose A
Format:	Artikel
Sprache:	eng
Schlagworte:	Assembly Asymmetry Galaxies Galaxy mergers & collisions Local group (astronomy) Mass ratios Milky Way Observability (systems) Physics - Astrophysics of Galaxies Star & galaxy formation Stars & galaxies Stellar mass Universe
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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 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 \(M_{*} = 10^{8}M_{\odot}\) with mass ratios of \(
ISSN:	2331-8422
DOI:	10.48550/arxiv.1409.1358