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dc.contributor.authorKettlety, T.
dc.contributor.authorHesling, J.
dc.contributor.authorPhillipps, S.
dc.contributor.authorBremer, M. N.
dc.contributor.authorCluver, M. E.
dc.contributor.authorTaylor, E. N.
dc.contributor.authorBland-Hawthorn, J.
dc.contributor.authorBrough, S.
dc.contributor.authorPropris, R. De
dc.contributor.authorDriver, S. P.
dc.contributor.authorHolwerda, B. W.
dc.contributor.authorKelvin, L. S.
dc.contributor.authorSutherland, W.
dc.contributor.authorWright, A. H.
dc.identifier.citationKettlety , T , Hesling , J , Phillipps , S , Bremer , M N , Cluver , M E , Taylor , E N , Bland-Hawthorn , J , Brough , S , Propris , R D , Driver , S P , Holwerda , B W , Kelvin , L S , Sutherland , W & Wright , A H 2018 , ' Galaxy And Mass Assembly (GAMA) : the consistency of GAMA and WISE derived mass-to-light ratios ' , Monthly Notices of the Royal Astronomical Society , vol. 473 , no. 1 , pp. 776-783 .
dc.identifier.otherPURE: 252095258
dc.identifier.otherPURE UUID: 9e255f89-8728-4572-89b9-0f51b7e89281
dc.identifier.otherScopus: 85043531388
dc.identifier.otherWOS: 000415653600061
dc.description.abstractRecent work has suggested that mid-IR wavelengths are optimal for estimating the mass-to-light ratios of stellar populations and hence the stellar masses of galaxies. We compare stellar masses deduced from spectral energy distribution (SED) models, fitted to multiwavelength optical-NIR photometry, to luminosities derived from WISE photometry in the W1 and W2 bands at 3.6 and 4.5 μm for non-star forming galaxies. The SED-derived masses for a carefully selected sample of low-redshift (z ≤ 0.15) passive galaxies agree with the prediction from stellar population synthesis models such that M*/LW1 ≃ 0.6 for all such galaxies, independent of other stellar population parameters. The small scatter between masses predicted from the optical SED and from the WISE measurements implies that random errors (as opposed to systematic ones such as the use of different initial mass functions) are smaller than previous, deliberately conservative, estimates for the SED fits. This test is subtly different from simultaneously fitting at a wide range of optical and mid-IR wavelengths, which may just generate a compromised fit: we are directly checking that the best-fitting model to the optical data generates an SED whose M*/LW1 is also consistent with separate mid-IR data. We confirm that for passive low-redshift galaxies a fixed M*/LW1 = 0.65 can generate masses at least as accurate as those obtained from more complex methods. Going beyond the mean value, in agreement with expectations from the models, we see a modest change in M*/LW1 with SED fitted stellar population age but an insignificant one with metallicity.
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rights© 2017, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at
dc.subjectGalaxies: evolutionen
dc.subjectGalaxies: fundamental parametersen
dc.subjectGalaxies: photometryen
dc.subjectGalaxies: stellar contenten
dc.subjectInfrared: galaxiesen
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.titleGalaxy And Mass Assembly (GAMA) : the consistency of GAMA and WISE derived mass-to-light ratiosen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.description.statusPeer revieweden

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