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

Research output: Contribution to journal › Article › peer-review

65 Citations (Scopus)

76 Downloads (Pure)

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 (MNRAS)
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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