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dc.contributor.authorAudcent-Ross, Fiona Men
dc.contributor.authorMeurer, Gerhardt Ren
dc.contributor.authorWong, OIen
dc.contributor.authorZheng, Zen
dc.contributor.authorHanish, Den
dc.contributor.authorZwaan, MAen
dc.contributor.authorBland-Hawthorn, Jen
dc.contributor.authorElagali, Aen
dc.contributor.authorMeyer, Men
dc.contributor.authorPutman, MEen
dc.contributor.authorRyan-Webber, EVen
dc.contributor.authorSweet, SMen
dc.contributor.authorThilker, DAen
dc.contributor.authorSeibert, Men
dc.contributor.authorAllen, Ren
dc.contributor.authorDopita, MAen
dc.contributor.authorDoyle-Pegg, MTen
dc.contributor.authorDrinkwater, Men
dc.contributor.authorFerguson, HCen
dc.contributor.authorFreeman, KCen
dc.contributor.authorHeckman, TMen
dc.contributor.authorJr, RC Kennicutten
dc.contributor.authorKilborn, VAen
dc.contributor.authorKim, JHen
dc.contributor.authorKnezek, PMen
dc.contributor.authorKoribalski, Ben
dc.contributor.authorSmith, RCen
dc.contributor.authorStaveley-Smith, Len
dc.contributor.authorWebster, RLen
dc.contributor.authorWerk, JKen
dc.date.accessioned2018-09-29T06:08:25Z
dc.date.available2018-09-29T06:08:25Z
dc.identifier.issn1365-2966
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/282915
dc.description.abstractFor the first time both H$\alpha$ and far-ultraviolet (FUV) observations from an HI-selected sample are used to determine the dust-corrected star formation rate density (SFRD: $\dot{\rho}$) in the local Universe. Applying the two star formation rate indicators on 294 local galaxies we determine log($\dot{\rho}$$ _{H\alpha}) = -1.68~^{+0.13}_{-0.05}$ [M$_{\odot} $ yr$^{-1} $ Mpc$^{-3}]$ and log($\dot{\rho}_{FUV}$) $ = -1.71~^{+0.12}_{-0.13}$ [M$_\odot $ yr$^{-1} $ Mpc$^{-3}]$. These values are derived from scaling H$\alpha$ and FUV observations to the HI mass function. Galaxies were selected to uniformly sample the full HI mass (M$_{HI}$) range of the HI Parkes All-Sky Survey (M$_{HI} \sim10^{7}$ to $\sim10^{10.7}$ M$_{\odot}$). The approach leads to relatively larger sampling of dwarf galaxies compared to optically-selected surveys. The low HI mass, low luminosity and low surface brightness galaxy populations have, on average, lower H$\alpha$/FUV flux ratios than the remaining galaxy populations, consistent with the earlier results of Meurer. The near-identical H$\alpha$- and FUV-derived SFRD values arise with the low H$\alpha$/FUV flux ratios of some galaxies being offset by enhanced H$\alpha$ from the brightest and high mass galaxy populations. Our findings confirm the necessity to fully sample the HI mass range for a complete census of local star formation to include lower stellar mass galaxies which dominate the local Universe.
dc.description.sponsorshipPartial funding for the SINGG and SUNGG surveys came from NASA grants NAG5-13083 (LTSA program), GALEX GI04- 0105-0009 (NASA GALEX Guest Investigator grant) and NNX09AF85G (GALEX archival grant) to G.R. Meurer. FAR acknowledges partial funding from the Department of Physics, University of Western Australia. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
dc.publisherOxford University Press
dc.subjectgalaxies: luminosity functionen
dc.subjectgalaxies: star formationen
dc.subjectsurveysen
dc.subjectultraviolet: galaxiesen
dc.titleNear-identical star formation rate densities from Hα and FUV at redshift zeroen
dc.typeArticle
prism.endingPage133
prism.issueIdentifier1en
prism.publicationNameMonthly Notices of the Royal Astronomical Societyen
prism.startingPage119
prism.volume480en
dc.identifier.doi10.17863/CAM.30278
dcterms.dateAccepted2018-06-08en
rioxxterms.versionofrecord10.1093/mnras/sty1538en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-06-08en
dc.identifier.eissn1365-2966
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idSCIENCE & TECHNOLOGY FACILITIES COUNCIL (ST/N000927/1)
cam.issuedOnline2018-06-12en
cam.orpheus.successThu Jan 30 10:54:32 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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