Galaxy Zoo: a sample of blue early-type galaxies at low redshift

By Kevin Schawinski, Chris J. Lintott, D. Thomas, M. Sarzi, Dan Andreescu, Steven Bamford, S. Kaviraj, S. Khochfar, K. Land, P. Murray and 6 more. 2009

134 citations recorded by the source corpus.

‘The definitive version is available at: www3.interscience.wiley.com '. Copyright Blackwell / Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.14793.x

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/1a8a37da5434773dfd28fc39a5e9c3b948869dba

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Citations in the corpus

The Sydney-AAO Multi-object Integral field spectrograph (2011, background): “…morphology, with galaxies lying along the ‘red sequence’ being mostly passive systems with elliptical/spheroidal morphology, while galaxies inhabiting the ‘blue cloud’ are mostly dominated by discs, although this is not always strictly the case (e.g. Masters et al. 2010; Schawinski et al. 2009).”
THE DEPENDENCE OF QUENCHING UPON THE INNER STRUCTURE OF GALAXIES AT 0.5 ⩽ z < 0.8 IN THE DEEP2/AEGIS SURVEY (2012, background): “According to 24 Rejuvenation of star formation in quiescent spheroids through gas and/or satellite infall has been proposed to explain theobserved blue spheroids seen in various works (e.g., Kannappan et al.2009; Schawinski et al. 2009).”
How do massive black holes get their gas (2009, result): “Their results are similar to those in a variety of other studies (see e.g. Kauffmann et al. 2003; Evans et al. 2006; Kewley et al. 2006; Schawinski et al. 2009).”
Galaxy Zoo: Disentangling the Environmental Dependence of Morphology and Colour ⋆ (2008, background): “…drive gas towards the center, where it can trigger a burst of star formation and fuel the central black hole, the feedback from which can heat the remaining gas and eventually quench star formation (e.g., Mihos & Hernquist 1996, Wild et al. 2007, Pasquali et al. 2008, Schawinski et al. 2009a).”
The green valley is a red herring: Galaxy Zoo reveals two evolutionary pathways towards quenching of star formation in early-and late-type galaxies (2014, methodology): “(i) Both early- and late-type galaxies span almost the entire u − r colour range, that is, the classification by morphology reveals populations of blue early-type galaxies and of red late-type galaxies (e.g. Schawinski et al. 2009a; Masters et al. 2010b).”
Galaxy Zoo: Passive Red Spirals . (2009, background): “Observational evidence now exists to support this hypothesis, showing that the AGN fraction peaks in the region between the blue cloud and the red sequence (Schawinski et al. 2007, 2009a).”
THE RISE AND FALL OF PASSIVE DISK GALAXIES: MORPHOLOGICAL EVOLUTION ALONG THE RED SEQUENCE REVEALED BY COSMOS (2009, background): “Star-forming blue ellipticals are one example (e.g., Schawinski et al. 2009; Kannappan et al. 2009; Ferreras et al. 2009; Brand et al. 2009) and are understood to be a combination of recent arrivals to the red sequence (Ruhland et al. 2009), bulge-dominated systems experiencing triggered star…”
Environment and self-regulation in galaxy formation (2009, background): “In a companion paper exploiting the MOSES sample (Schawinski et al. 2007b, 2009a), we have found first empirical evidence that such a mechanism may indeed be occurring in early-type galaxies also at recent epochs.”
Galaxy Zoo 1: data release of morphological classifications for nearly 900 000 galaxies (2010, background): “Much of this work, published elsewhere (eg Bamford et al. 2009; Schawinski et al. 2009; Masters et al. 2010a; Land et al. 2008) was only possible because of the large number of morphological classifications provided by the project.”
Galaxy Zoo: the fraction of merging galaxies in the SDSS and their morphologies (2009, methodology): “…like those in Figure 3, we decided to build our first catalogue using only systems with fm > 0.4 6 This is the same parent population obtained after six-months of running Galaxy Zoo that is used in Lintott et al. (2008), Land et al. (2008), Bamford et al. (2008a) and Schawinski et al. (2009).”
Galaxy Zoo 2: detailed morphological classifications for 304,122 galaxies from the Sloan Digital Sky Survey (2013, background): “For example, most ellipticals are red and most spirals are blue; however, interesting subsets of both types have been found with the opposite colour (Schawinski et al. 2009; Masters et al. 2010).”
Revisiting the Hubble sequence in the SDSS DR7 spectroscopic sample: a publicly available Bayesian automated classification (2010, background): “For example, Schawinski et al. (2009) and Kannappan et al. (2009) have found a significant fraction of elliptical galaxies with blue colors in thelocal Universe.”
GALAXY ZOO: THE FUNDAMENTALLY DIFFERENT CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND THEIR EARLY- AND LATE-TYPE HOST GALAXIES (2010, methodology): “Rather, the absence of active black hole accretion in blue cloud objects, established by Schawinski et al. (2009c), implies that there must be a significant time delay on the order of at least 100 Myr, more likely more like 500 Myr, between whichever process suppresses star formation and the onset…”
Rotation-invariant convolutional neural networks for galaxy morphology prediction (2015, methodology): “…projects have already been used in a wide variety of studies on galaxy structure, formation and evolution (Bamford et al. 2009; Lintott et al. 2009; Schawinski et al. 2009; Skibba et al. 2009; Darg et al. 2010; Masters et al. 2010, 2011; Simmons et al. 2013; Melvin et al. 2014; Willett et al.…”