Galaxy Zoo: Bulgeless galaxies with growing black holes

B. Simmons; C. Lintott; S. Kaviraj; K. Schawinski; A. Han; C.M. Urry; E.C. Moran; K.L. Masters; R.C. Nichol; K.W. Willett; S.P. Bamford

doi:10.1093/mnras/sts491

Galaxy Zoo: Bulgeless galaxies with growing black holes

B. Simmons, C. Lintott, S. Kaviraj, K. Schawinski, A. Han, C.M. Urry, E.C. Moran, K.L. Masters, R.C. Nichol, K.W. Willett, S.P. Bamford

Centre for Astrophysics Research (CAR)

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Abstract

The growth of supermassive black holes appears to be driven by galaxy mergers, violent merger-free processes and/or 'secular' processes. In order to quantify the effects of secular evolution on black hole growth, we study a sample of active galactic nuclei (AGN) in galaxies with a calm formation history free of significant mergers, a population that heretofore has been difficult to locate. Here we present an initial sample of 13 AGN in massive (M ≳ 10M) bulgeless galaxies - which lack the classical bulges believed inevitably to result from mergers - selected from the Sloan Digital Sky Survey using visual classifications from Galaxy Zoo. Parametric morphological fitting confirms that the host galaxies lack classical bulges; any contributions from pseudo-bulges are very small (typically

Original language	English
Pages (from-to)	2199-2211
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	429
Issue number	3
Early online date	4 Jan 2013
DOIs	https://doi.org/10.1093/mnras/sts491
Publication status	Published - Mar 2013

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AU - Lintott, C.

AU - Kaviraj, S.

AU - Schawinski, K.

AU - Han, A.

AU - Urry, C.M.

AU - Moran, E.C.

AU - Masters, K.L.

AU - Nichol, R.C.

AU - Willett, K.W.

AU - Bamford, S.P.

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Galaxy Zoo: Bulgeless galaxies with growing black holes

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