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dc.contributor.authorMonguió, Maria
dc.contributor.authorFigueras, Francesca
dc.contributor.authorGrosbøl, Preben
dc.date.accessioned2017-07-20T16:02:28Z
dc.date.available2017-07-20T16:02:28Z
dc.date.issued2014-09-03
dc.identifier.citationMonguió , M , Figueras , F & Grosbøl , P 2014 , ' Stellar physical parameters from Str ömgren photometry. Application to the young stars in the Galactic anticenter survey ' , Astronomy & Astrophysics , vol. 568 . https://doi.org/10.1051/0004-6361/201423703
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 9912679
dc.identifier.otherPURE UUID: be64e03a-7b0b-48f7-8a05-db18473edacf
dc.identifier.otherArXiv: http://arxiv.org/abs/1407.8425v1
dc.identifier.otherScopus: 84906883200
dc.identifier.urihttp://hdl.handle.net/2299/19018
dc.descriptionM. Monguió, F. Figueras, and P. Grosbøl, “Stellar physical parameters from Strömgren photometry. Application to the young stars in the Galactic anticenter survey”, Astronomy & Astrophysics, Vol. 568, September 2014. Thhis version of record is available online at: https://doi.org/10.1051/0004-6361/201423703 Reproduced with Permission from Astronomy and Astrophysics, © ESO 2016.
dc.description.abstractAims. The aim is to derive accurate stellar distances and extinctions for young stars of our survey in the Galactic anticenter direction using the Str\"omgren photometric system. This will allow a detailed mapping of the stellar density and absorption toward the Perseus arm. Methods. We developed a new method for deriving physical parameters from Str\"omgren photometry and also implemented and tested it. This is a model-based method that uses the most recent available stellar atmospheric models and evolutionary tracks to interpolate in a 3D grid of the unreddened indexes [m1], [c1] and Hbeta. Distances derived from both this method and the classical pre-Hipparcos calibrations were tested against Hipparcos parallaxes and found to be accurate. Results. Systematic trends in stellar photometric distances derived from empirical calibrations were detected and quantified. Furthermore, a shift in the atmospheric grids in the range Teff=[7000,9000]K was detected and a correction is proposed. The two methods were used to compute distances and reddening for about 12000 OBA-type stars in our Str\"omgren anticenter survey. Data from the IPHAS and 2MASS catalogs were used to complement the detection of emission line stars and to break the degeneracy between early and late photometric regions. We note that photometric distances can differ by more than 20%, those derived from the empirical calibrations being smaller than those derived with the new method, which agree better with the Hipparcos data.en
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofAstronomy & Astrophysics
dc.rightsOpen
dc.subjectastro-ph.SR
dc.titleStellar physical parameters from Str ömgren photometry. Application to the young stars in the Galactic anticenter surveyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2014-09-03
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201423703
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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