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The Effect of Metallicity on the Cepheid Period-Luminosity Relation
Martino Romaniello, Francesca Primas, Marta Mottini +1
We present preliminary results of an observational campaign devoted at establishing the influence of chemical composition on the Cepheid Period-Luminosity relation. The data are in…
Determining the Metallicity of Cepheid Stars in the SMC, LMC and the Galaxy
M. Mottini, F. Primas, M. Romaniello +1
The Cepheid Period-Luminosity relation is unquestionably one of the most powerful tools at our disposal for determining the extragalactic distance scale. While significant progress…
The distance to the LMC cluster NGC 1866; clues from the cluster Cepheid population
M. A. T. Groenewegen, M. Salaris
(abridged) Recent investigations aimed at estimating the distance to the young LMC cluster NGC1866 have made use of Red Clump stars in the surrounding LMC field, together with empi…
Long Period Variables detected by ISO in the SMC
M. -R. L. Cioni, J. A. D. L. Blommaert, M. A. T. Groenewegen +8
This article presents the study of the light-curves extracted from the MACHO database of a sample of stars observed by the ISO in the SMC. These stars belong to the ISO-Mini-Survey…
`Thermal' SiO radio line emission towards M-type AGB stars: a probe of circumstellar dust formation and dynamics
D. Gonzalez Delgado, H. Olofsson, F. Kerschbaum +3
An extensive radiative transfer analysis of circumstellar SiO `thermal' radio line emission from a large sample of M-type AGB stars has been performed. The sample contains 18 irreg…