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 journalArticlepeer-review

48 Citations (Scopus)
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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 languageEnglish
Pages (from-to)2199-2211
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume429
Issue number3
Early online date4 Jan 2013
DOIs
Publication statusPublished - Mar 2013

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