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dc.contributor.authorJofré, P
dc.contributor.authorTraven, G
dc.contributor.authorHawkins, K
dc.contributor.authorGilmore, Gerard
dc.contributor.authorSanders, Jason
dc.contributor.authorMädler, T
dc.contributor.authorSteinmetz, M
dc.contributor.authorKunder, A
dc.contributor.authorKordopatis, G
dc.contributor.authorMcMillan, P
dc.contributor.authorBienaymé, O
dc.contributor.authorBland-Hawthorn, J
dc.contributor.authorGibson, BK
dc.contributor.authorGrebel, EK
dc.contributor.authorMunari, U
dc.contributor.authorNavarro, J
dc.contributor.authorParker, Q
dc.contributor.authorReid, W
dc.contributor.authorSeabroke, G
dc.contributor.authorZwitter, T
dc.date.accessioned2018-11-05T10:24:34Z
dc.date.available2018-11-05T10:24:34Z
dc.date.issued2017-12
dc.identifier.issn0035-8711
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/284562
dc.description.abstract© 2017 The Author. We apply the twin method to determine parallaxes to 232 545 stars of the RAVE survey using the parallaxes of Gaia DR1 as a reference. To search for twins in this large data set, we apply the t-student stochastic neighbour embedding projection that distributes the data according to their spectral morphology on a two-dimensional map. From this map, we choose the twin candidates for which we calculate a χ 2 to select the best sets of twins. Our results show a competitive performance when compared to other model-dependent methods relying on stellar parameters and isochrones. The power of the method is shown by finding that the accuracy of our results is not significantly affected if the stars are normal or peculiar since the method is model free. We find twins for 60 per cent of the RAVE sample that are not contained in Tycho-Gaia Astrometric Solution (TGAS) or that have TGAS uncertainties that are larger than 20 per cent. We could determine parallaxes with typical errors of 28 per cent. We provide a complementary data set for the RAVE stars not covered by TGAS, or that have TGAS uncertainties which are larger than 20 per cent, with model-free parallaxes scaled to the Gaia measurements.
dc.publisherOxford University Press (OUP)
dc.rightsAll rights reserved
dc.titleClimbing the cosmic ladder with stellar twins in RAVE with Gaia
dc.typeArticle
prism.endingPage2533
prism.issueIdentifier3
prism.publicationDate2017
prism.publicationNameMonthly Notices of the Royal Astronomical Society
prism.startingPage2517
prism.volume472
dc.identifier.doi10.17863/CAM.31938
dcterms.dateAccepted2017-07-20
rioxxterms.versionofrecord10.1093/mnras/stx1877
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2017-12-01
dc.contributor.orcidGilmore, Gerard [0000-0003-4632-0213]
dc.contributor.orcidSanders, Jason [0000-0003-4593-6788]
dc.identifier.eissn1365-2966
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEuropean Research Council (320360)
pubs.funder-project-idScience and Technology Facilities Council (ST/N000927/1)
cam.issuedOnline2017-08-14


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