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The long-period Galactic Cepheid RS Puppis - I. A geometric distance from its light echoes
Pierre Kervella, Antoine Mérand, Laszlo Szabados +4
Context: The bright southern Cepheid RS Pup is surrounded by a circumstellar nebula reflecting the light from the central star. The propagation of the light variations from the Cep…
New homogeneous iron abundances of double-mode Cepheids from high-resolution echelle spectroscopy
K. Sziladi, J. Vinko, E. Poretti +2
Aims: We define the relationship between the double-mode pulsation of Cepheids and metallicity in a more accurate way, determine the empirical metallicities of double-mode Cepheids…
Pulsation and orbit of AU Pegasi
M. Jurkovic, L. Szabados, J. Vinkó +1
AU Pegasi is a pulsating star in a spectroscopic binary system with an orbital period of 53.26 days. Between 1960 and 1990 an extremely rapid period increase was observed in the va…
Conventional and new directions in studying Cepheids
L. Szabados
In the first part of this paper, traditional methods of studying Cepheids are summarized, mentioning Detre's contribution to this field. Then the new directions of Cepheid related…
The anomalous Cepheid XZ Ceti
Laszlo Szabados, Laszlo L. Kiss, Aliz Derekas
XZ Ceti is the only known anomalous Cepheid in the Galactic field. Being the nearest and brightest such variable star, a detailed study of XZ Ceti may shed light on the behaviour o…
Metallicity dependence of some parameters of Cepheids
P. Klagyivik, L. Szabados
Dependence of phenomenological properties of Cepheids on the heavy element abundance is studied. It is found that the amplitude of the pulsation depends on the metallicity of the s…
The 2004--2006 outburst and environment of V1647 Ori
J. A. Acosta-Pulido, M. Kun, P. Abraham +15
(Abridged) We studied the brightness and spectral evolution of the young eruptive star V1647 Ori during its recent outburst in the period 2004 February - 2006 Sep. We performed a p…