Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/9197
A new maximum likelihood method for luminosity calibrations
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
A new statistical parallax method using the Maximum Likelihood principle is presented, allowing the simultaneous determination of a luminosity calibration, kinematic characteristics and spatial distribution of a given sample. This method has been developed for the exploitation of the Hipparcos data and presents several improvements with respect to the previous ones: the effects of the selection of the sample, the observational errors, the galactic rotation and the interstellar absorption are taken into account as an intrinsic part of the formulation (as opposed to external corrections). Furthermore, the method is able to identify and characterize physically distinct groups in inhomogeneous samples, thus avoiding biases due to unidentified components. Moreover, the implementation used by the authors is based on the extensive use of numerical methods, so avoiding the need for simplification of the equations and thus the bias they could introduce. Several examples of application using simulated samples are presented, to be followed by applications to real samples in forthcoming articles.
Matèries
Matèries (anglès)
Citació
Citació
LURI CARRASCOSO, Xavier, MENNESSIER, M. o., TORRA ROCA, Jorge, FIGUERAS SIÑOL, Francesca. A new maximum likelihood method for luminosity calibrations. _Astronomy and Astrophysics Supplement Series_. 1996. Vol. 117, núm. 2, pàgs. 405-415. [consulta: 25 de febrer de 2026]. ISSN: 0365-0138. [Disponible a: https://hdl.handle.net/2445/9197]