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dc.contributor.authorCardamone, C.
dc.contributor.authorSchawinski, K.
dc.contributor.authorSarzi, M.
dc.contributor.authorBamford, S.
dc.contributor.authorBennert, N.
dc.contributor.authorUrry, C.M.
dc.contributor.authorLintott, C.
dc.contributor.authorKeel, W.
dc.contributor.authorParejko, J.
dc.contributor.authorNichol, R.C.
dc.contributor.authorThomas, D.
dc.contributor.authorAndreescu, D.
dc.contributor.authorMurray, P.
dc.contributor.authorRaddick, M.J.
dc.contributor.authorSlosar, A.
dc.contributor.authorSzalay, A.
dc.contributor.authorVandenberg, J.
dc.date.accessioned2010-04-01T11:23:13Z
dc.date.available2010-04-01T11:23:13Z
dc.date.issued2009
dc.identifier.citationCardamone , C , Schawinski , K , Sarzi , M , Bamford , S , Bennert , N , Urry , C M , Lintott , C , Keel , W , Parejko , J , Nichol , R C , Thomas , D , Andreescu , D , Murray , P , Raddick , M J , Slosar , A , Szalay , A & Vandenberg , J 2009 , ' Galaxy Zoo Green Peas: discovery of a class of compact extremely star-forming galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 399 , no. 3 , pp. 1191-1205 . https://doi.org/10.1111/j.1365-2966.2009.15383.x
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 156348
dc.identifier.otherPURE UUID: 87099270-02c1-459b-b750-108896169286
dc.identifier.otherdspace: 2299/4370
dc.identifier.otherScopus: 70350075474
dc.identifier.urihttp://hdl.handle.net/2299/4370
dc.description‘The definitive version is available at www3.interscience.wiley.com '. Copyright Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2009.15383.x
dc.description.abstractWe investigate a class of rapidly growing emission line galaxies, known as 'Green Peas', first noted by volunteers in the Galaxy Zoo project because of their peculiar bright green colour and small size, unresolved in Sloan Digital Sky Survey imaging. Their appearance is due to very strong optical emission lines, namely [O iii]λ5007 Å, with an unusually large equivalent width of up to ∼1000 Å. We discuss a well-defined sample of 251 colour-selected objects, most of which are strongly star forming, although there are some active galactic nuclei interlopers including eight newly discovered narrow-line Seyfert 1 galaxies. The star-forming Peas are low-mass galaxies (M∼ 108.5–1010 M⊙) with high star formation rates (∼10 M⊙ yr−1) , low metallicities (log[O/H]+ 12 ∼ 8.7) and low reddening [ E(B−V) ≤ 0.25 ] and they reside in low-density environments. They have some of the highest specific star formation rates (up to ∼10−8 yr−1 ) seen in the local Universe, yielding doubling times for their stellar mass of hundreds of Myr. The few star-forming Peas with Hubble Space Telescope imaging appear to have several clumps of bright star-forming regions and low surface density features that may indicate recent or ongoing mergers. The Peas are similar in size, mass, luminosity and metallicity to luminous blue compact galaxies. They are also similar to high-redshift ultraviolet-luminous galaxies, e.g. Lyman-break galaxies and Lyα emitters, and therefore provide a local laboratory with which to study the extreme star formation processes that occur in high-redshift galaxies. Studying starbursting galaxies as a function of redshift is essential to understanding the build up of stellar mass in the Universe.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.titleGalaxy Zoo Green Peas: discovery of a class of compact extremely star-forming galaxiesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-2966.2009.15383.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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