Theδ Scuti star XX Pyx is an ellipsoidal variable
نویسندگان
چکیده
منابع مشابه
Towards a seismic model of the δ Scuti star XX Pyxidis
Frequencies of 13 oscillation modes in the star XX Pyxidis (CD–24 7599) are accurately measured but for none of the modes the spherical harmonic degree (l) is known. We present results of an attempt to construct the model whose low–l mode frequencies reproduce possibly close the observations. Models are constrained by the mean photometric and spectroscopic data for the star. However, the strong...
متن کاملOn the irregular temporal behaviour of the variable star R Scuti
AB S TRACT We comment on the recent results of a temporal analysis of R Scuti, a star of RV Tauri type, presented by Buchler et al. As an alternative approach, we apply the technique of linear state space analysis to describe the irregular temporal behaviour with a linear stochastic process.We find evidence that the variability of R Scuti can be explained by the superposition of two stochastica...
متن کاملWASP-33: the first δ Scuti exoplanet host star⋆
We report the discovery of photometric oscillations in the host star of the exoplanet WASP-33 b (HD 15082). The data were obtained in the R band in both transit and out-of-transit phases from the 0.3-m telescope and the Montcabrer Observatory and the 0.8-m telescope at the Montsec Astronomical Observatory. Proper fitting and subsequent removal of the transit signal reveals stellar photometric v...
متن کاملDiscrete Cosmological Self-Similarity and Delta Scuti Variable Stars
Within the context of a fractal paradigm that emphasizes nature’s well-stratified hierarchical organization, the δ Scuti class of variable stars is investigated for evidence of discrete cosmological self-similarity. Methods that were successfully applied to the RR Lyrae class of variable stars are used to identify Atomic Scale analogues of δ Scuti stars and their relevant range of energy levels...
متن کاملThe first high-amplitude δ Scuti star in an eclipsing binary system
We report the discovery of the first high-amplitude δ Scuti star in an eclipsing binary, which we have designated UNSW-V-500. The system is an Algol-type semi-detached eclipsing binary of maximum brightness V = 12.52 mag. A best-fitting solution to the binary light curve and two radial velocity curves is derived using the Wilson–Devinney code. We identify a late-A spectral-type primary componen...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2002
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2002.05627.x