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Star-forming, rotating spheroidal galaxies in the GAMA and SAMI Surveys
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dc.contributor.author | Moffett, Amanda J | |
dc.contributor.author | Phillipps, Steven | |
dc.contributor.author | Robotham, Aaron S G | |
dc.contributor.author | Driver, Simon P | |
dc.contributor.author | Bremer, Malcolm N | |
dc.contributor.author | Cortese, Luca | |
dc.contributor.author | Wong, O Ivy | |
dc.contributor.author | Brough, Sarah | |
dc.contributor.author | Brown, Michael J I | |
dc.contributor.author | Bryant, Julia J | |
dc.contributor.author | Conselice, Christopher J | |
dc.contributor.author | Croom, Scott M | |
dc.contributor.author | George, Koshy | |
dc.contributor.author | Goldstein, Greg | |
dc.contributor.author | Goodwin, Michael | |
dc.contributor.author | Holwerda, Benne W | |
dc.contributor.author | Hopkins, Andrew M | |
dc.contributor.author | Konstantopoulos, Iraklis S | |
dc.contributor.author | Lawrence, Jon S | |
dc.contributor.author | Lorente, Nuria P F | |
dc.contributor.author | Medling, Anne M | |
dc.contributor.author | Owers, Matt S | |
dc.contributor.author | Pimbblet, Kevin A | |
dc.contributor.author | Richards, Samuel N | |
dc.contributor.author | Sweet, Sarah M | |
dc.contributor.author | Van De Sande, Jesse | |
dc.date.accessioned | 2019-09-05T09:30:01Z | |
dc.date.available | 2019-09-05T09:30:01Z | |
dc.date.issued | 2019-10 | |
dc.identifier | 260747171 | |
dc.identifier | 65d3d335-5e3b-4f2f-8bca-361051b6c4e0 | |
dc.identifier | 85075173707 | |
dc.identifier.citation | Moffett , A J , Phillipps , S , Robotham , A S G , Driver , S P , Bremer , M N , Cortese , L , Wong , O I , Brough , S , Brown , M J I , Bryant , J J , Conselice , C J , Croom , S M , George , K , Goldstein , G , Goodwin , M , Holwerda , B W , Hopkins , A M , Konstantopoulos , I S , Lawrence , J S , Lorente , N P F , Medling , A M , Owers , M S , Pimbblet , K A , Richards , S N , Sweet , S M & Van De Sande , J 2019 , ' Star-forming, rotating spheroidal galaxies in the GAMA and SAMI Surveys ' , Monthly Notices of the Royal Astronomical Society , vol. 489 , no. 2 , pp. 2830–2843 . https://doi.org/10.1093/mnras/stz2237 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | crossref: 10.1093/mnras/stz2237 | |
dc.identifier.uri | https://hdl.handle.net/10023/18424 | |
dc.description.abstract | The Galaxy And Mass Assembly (GAMA) survey has morphologically identified a class of “Little Blue Spheroid” (LBS) galaxies whose relationship to other classes of galaxies we now examine in detail. Considering a sample of 868 LBSs, we find that such galaxies display similar but not identical colours, specific star formation rates, stellar population ages, mass-to-light ratios, and metallicities to Sd-Irr galaxies. We also find that LBSs typically occupy environments of even lower density than those of Sd-Irr galaxies, where ∼65% of LBS galaxies live in isolation. Using deep, high-resolution imaging from VST KiDS and the new Bayesian, two-dimensional galaxy profile modeling code PROFIT, we further examine the detailed structure of LBSs and find that their Sérsic indices, sizes, and axial ratios are compatible with those of low-mass elliptical galaxies. We then examine SAMI Galaxy survey integral field emission line kinematics for a subset of 62 LBSs and find that the majority (42) of these galaxies display ordered rotation with the remainder displaying disturbed/non-ordered dynamics. Finally, we consider potential evolutionary scenarios for a population with this unusual combination of properties, concluding that LBSs are likely formed by a mixture of merger and accretion processes still recently active in low-redshift dwarf populations. We also infer that if LBS-like galaxies were subjected to quenching in a rich environment, they would plausibly resemble cluster dwarf ellipticals. | |
dc.format.extent | 14 | |
dc.format.extent | 3965378 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | Surveys | en |
dc.subject | Galaxies: dwarf | en |
dc.subject | Galaxies: structure | en |
dc.subject | Galaxies: fundamental paramaters | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | 3rd-DAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Star-forming, rotating spheroidal galaxies in the GAMA and SAMI Surveys | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1093/mnras/stz2237 | |
dc.description.status | Peer reviewed | en |
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