Formation of stellar inner discs and rings in spiral galaxies through minor mergers



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Eliche Moral, María del Carmen and González García, A. C. and Balcells, M. and Aguerri, J.A.L. and Gallego Maestro, Jesús and Zamorano Calvo, Jaime and Prieto Matías, Manuel (2013) Formation of stellar inner discs and rings in spiral galaxies through minor mergers. In Fourth Science Meeting with the GTC. Rev Mex AA (Serie de Conferencias), 42 . UNAM-Instituto de Astronomía, p. 104. ISBN 978-607-02-4281-6

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Recent observations show that inner disks and rings (IDs and IRs) are not preferentially found in barred galaxies, pointing to the relevance of formation mechanisms different to the traditional bar-origin scenario. Nevertheless, the role of minor mergers in the formation of these inner components (ICs), while often invoked, is still poorly understood. We have investigated the capability of minor mergers to trigger the formation of IDs and IRs in spiral galaxies through collisionless N-body simulations. Our models prove that minor mergers are an efficient mechanism to form rotationally-supported stellar ICs in spirals, neither requiring strong dissipation nor noticeable bars, and suggest that their role in the formation of ICs must have been much more complex than just bar triggering.

Item Type:Book Section
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© 2013: Instituto de Astronomía, UNAM. Science with the GTC Meeting (4th. 2011. Santa Cruz de La Palma/Spain). Supported by the Spanish Ministry of Science and Innovation (MICINN) under projects AYA2009 -10368 , AYA2006-12955 , and AYA2009-11137 , and by the Madrid Regional Government through the Astro-Madrid Project (CAM S2009/ESP-1496). Funded by the Spanish MICINN under the Consolider- Ingenio 2010 Program grant CSD2006-00070: “First Science with the GTC”. S.D.H. & G.

Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:61516
Deposited On:21 Jul 2020 09:43
Last Modified:27 Jul 2020 10:32

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