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dc.contributor.authorKalari, V. M.
dc.contributor.authorVink, J. S.
dc.contributor.authorDrew, J.E.
dc.contributor.authorBarentsen, G.
dc.contributor.authorDrake, J. J.
dc.contributor.authorEislöffel, J.
dc.contributor.authorMartín, E.L.
dc.contributor.authorParker, Q. A.
dc.contributor.authorUnruh, Y.C.
dc.contributor.authorWalton, N. A.
dc.contributor.authorWright, N. J.
dc.date.accessioned2016-03-21T09:35:31Z
dc.date.available2016-03-21T09:35:31Z
dc.date.issued2015-10-11
dc.identifier.citationKalari , V M , Vink , J S , Drew , J E , Barentsen , G , Drake , J J , Eislöffel , J , Martín , E L , Parker , Q A , Unruh , Y C , Walton , N A & Wright , N J 2015 , ' Classical T Tauri stars with VPHAS+ -I : H α and u -band accretion rates in the Lagoon Nebula M8 ' , Monthly Notices of the Royal Astronomical Society , vol. 453 , no. 1 , pp. 1026-1046 . https://doi.org/10.1093/mnras/stv1676
dc.identifier.issn0035-8711
dc.identifier.otherArXiv: http://arxiv.org/abs/1507.06786v1
dc.identifier.otherORCID: /0000-0003-1192-7082/work/62750175
dc.identifier.urihttp://hdl.handle.net/2299/16840
dc.description.abstractWe estimate the accretion rates of 235 Classical T Tauri star (CTTS) candidates in the Lagoon Nebula using $ugri$H$\alpha$ photometry from the VPHAS+ survey. Our sample consists of stars displaying H$\alpha$-excess, the intensity of which is used to derive accretion rates. For a subset of 87 stars, the intensity of the $u$-band excess is also used to estimate accretion rates. We find the mean variation in accretion rates measured using H$\alpha$ and $u$-band intensities to be $\sim$ 0.17 dex, agreeing with previous estimates (0.04-0.4 dex) but for a much larger sample. The spatial distribution of CTTS align with the location of protostars and molecular gas suggesting that they retain an imprint of the natal gas fragmentation process. Strong accretors are concentrated spatially, while weak accretors are more distributed. Our results do not support the sequential star forming processes suggested in the literature.en
dc.format.extent8465911
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.SR
dc.subjectastro-ph.IM
dc.subjectGeneral Physics and Astronomy
dc.titleClassical T Tauri stars with VPHAS+ -I : H α and u-band accretion rates in the Lagoon Nebula M8en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research (CAR)
dc.description.statusPeer reviewed
rioxxterms.versionofrecord10.1093/mnras/stv1676
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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