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DC Field | Value | Language |
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dc.contributor.author | Barthès, D. | cat |
dc.contributor.author | Luri Carrascoso, Xavier | cat |
dc.contributor.author | Alvarez, R. | cat |
dc.contributor.author | Mennessier, M. O. | cat |
dc.date.accessioned | 2009-08-28T08:27:31Z | - |
dc.date.available | 2009-08-28T08:27:31Z | - |
dc.date.issued | 1999 | cat |
dc.identifier.issn | 0365-0138 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/9225 | - |
dc.description.abstract | The absolute K magnitudes and kinematic parameters of about 350 oxygen-rich Long-Period Variable stars are calibrated, by means of an up-to-date maximum-likelihood method, using HIPPARCOS parallaxes and proper motions together with radial velocities and, as additional data, periods and V-K colour indices. Four groups, differing by their kinematics and mean magnitudes, are found. For each of them, we also obtain the distributions of magnitude, period and de-reddened colour of the base population, as well as de-biased period-luminosity-colour relations and their two-dimensional projections. The SRa semiregulars do not seem to constitute a separate class of LPVs. The SRb appear to belong to two populations of different ages. In a PL diagram, they constitute two evolutionary sequences towards the Mira stage. The Miras of the disk appear to pulsate on a lower-order mode. The slopes of their de-biased PL and PC relations are found to be very different from the ones of the Oxygen Miras of the LMC. This suggests that a significant number of so-called Miras of the LMC are misclassified. This also suggests that the Miras of the LMC do not constitute a homogeneous group, but include a significant proportion of metal-deficient stars, suggesting a relatively smooth star formation history. As a consequence, one may not trivially transpose the LMC period-luminosity relation from one galaxy to the other. | eng |
dc.format.extent | 13 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | EDP Sciences | cat |
dc.relation.isformatof | Reproducció del document publicat a http://dx.doi.org/10.1051/aas:1999518 | cat |
dc.relation.ispartof | Astronomy and Astrophysics Supplement Series, 1999, vol. 140, p. 55-67. | cat |
dc.relation.requires | http://dx.doi.org/10.1051/aas:1999518 | - |
dc.rights | (c) The European Southern Observatory, 1999 | cat |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Evolució estel·lar | cat |
dc.subject.classification | Cinemàtica galàctica | cat |
dc.subject.other | Stars: variables: long period variables | eng |
dc.subject.other | AGB | eng |
dc.subject.other | Fundamental parameters | eng |
dc.subject.other | Kinematics | eng |
dc.subject.other | Evolution | eng |
dc.title | Period-Luminosity-Colour distribution and classification of Galactic oxygen-rich LPVs I. Luminosity calibrations | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 173733 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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173733.pdf | 469.81 kB | Adobe PDF | View/Open |
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