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Infrared flux method and colour calibrations

Casagrande, Luca

Description

The Infrared Flux Method (IRFM) is one of the most accurate techniques to derive fundamental stellar parameters - namely effective temperatures, bolometric luminosities and angular diameters - in an almost model independent way. We review the method and its application to late-type dwarfs, with particular emphasis on the dependence of the resulting effective temperatures on the adopted absolute calibration. We also compare our results with a large set of recent interferometric angular diameters...[Show more]

dc.contributor.authorCasagrande, Luca
dc.coverage.spatialUppsala Sweden
dc.date.accessioned2015-12-10T21:55:51Z
dc.date.createdJune 23-27 2008
dc.identifier.urihttp://hdl.handle.net/1885/39160
dc.description.abstractThe Infrared Flux Method (IRFM) is one of the most accurate techniques to derive fundamental stellar parameters - namely effective temperatures, bolometric luminosities and angular diameters - in an almost model independent way. We review the method and its application to late-type dwarfs, with particular emphasis on the dependence of the resulting effective temperatures on the adopted absolute calibration. We also compare our results with a large set of recent interferometric angular diameters in order to better constrain the temperature scale: despite the excellent agreement we find, uncertainties of order 100 K cannot yet be ruled out. We conclude that although such disturbing uncertainty still plagues the determination of accurate effective temperatures, the homogeneous and internally precise fundamental stellar parameters determined via IRFM permit the study of the fine structure of the lower main sequence in greater detail than ever before.
dc.publisherIOP Publishing
dc.relation.ispartofseriesA Stellar Journey: A symposium in Celebration of Bengt Gustafsson's 65th Birthday
dc.sourcePhysica Scripta, Volume T133
dc.source.urihttp://iopscience.iop.org/1402-4896/2008/T133
dc.subjectKeywords: Absolute calibration; Angular diameters; Bolometric luminosities; Effective temperature; Fine structures; Flux methods; Late-type; Model independent; Stellar parameters; Calibration; Temperature
dc.titleInfrared flux method and colour calibrations
dc.typeConference paper
local.description.notesImported from ARIES
dc.date.issued2008
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationu4630950xPUB172
local.type.statusPublished Version
local.contributor.affiliationCasagrande, Luca, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage014020
local.identifier.doi10.1088/0031-8949/2008/T133/014020
dc.date.updated2016-02-24T11:15:16Z
local.identifier.scopusID2-s2.0-70350651291
CollectionsANU Research Publications

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