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AB Doradus C: age, spectral type, orbit, and comparison to evolutionary models

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dc.contributor.authorNielsen, E. L.en
dc.contributor.authorClose, L. M.en
dc.contributor.authorGuirado, J. C.en
dc.contributor.authorBiller, B. A.en
dc.contributor.authorLenzen, R.en
dc.contributor.authorBrandner, W.en
dc.contributor.authorHartung, M.en
dc.contributor.authorLidman, C.en
dc.date.accessioned2025-06-24T08:39:56Z
dc.date.available2025-06-24T08:39:56Z
dc.date.issued2005-12-01en
dc.description.abstractWe expand upon the results of Close et al. (2005) regarding the young, low-mass object AB Dor C and its role as a calibration point for theoretical tracks. We present an improved spectral reduction and a new orbital solution with two additional epochs. Our improved analysis confirms our spectral type of M8 (±1) and mass of 0.090 ±0.003 M\sun for AB Dor C. Comparing the results for AB Dor C with other young, low-mass objects with dynamical masses we find a general trend where current evolutionary models tend to over-predict the temperature (or under-predict the mass) for low-mass stars and brown dwarfs. Given our precision, there is a ∼99% chance that the mass of AB Dor C is underestimated by the DUSTY tracks in the HR diagram.en
dc.description.statusPeer-revieweden
dc.format.extent7en
dc.identifier.issn0004-6337en
dc.identifier.otherRIS:urn:3D5158451024E5EBF6B3899BDAB0C64Een
dc.identifier.scopus29844445789en
dc.identifier.urihttps://hdl.handle.net/1885/733764861
dc.language.isoenen
dc.sourceAstronomische Nachrichtenen
dc.subjectinfrared: starsen
dc.subjectstars: formationen
dc.subjectstars: low-massen
dc.subjectbrown dwarfsen
dc.subjectstars: pre-main sequenceen
dc.subjectstars: individual (AB Dor)en
dc.subjectAstrophysicsen
dc.titleAB Doradus C: age, spectral type, orbit, and comparison to evolutionary modelsen
dc.typeJournal articleen
dspace.entity.typePublicationen
local.bibliographicCitation.lastpage1039en
local.bibliographicCitation.startpage1033en
local.contributor.affiliationLidman, C.; RSAA Academic Program, Research School of Astronomy & Astrophysics, ANU College of Science and Medicine, The Australian National Universityen
local.identifier.citationvolume326en
local.identifier.doi10.1002/asna.200510442en
local.identifier.pureaa34f5f6-edda-4e78-8170-246af8fd2405en
local.type.statusPublisheden

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