# New periodic variables from the Hipparcos epoch photometry

@article{Koen2002NewPV,
title={New periodic variables from the Hipparcos epoch photometry},
author={Chris Koen and Laurent Eyer},
journal={Monthly Notices of the Royal Astronomical Society},
year={2002},
volume={331},
pages={45-59}
}
• Published 7 December 2001
• Physics
• Monthly Notices of the Royal Astronomical Society
Two selection statistics are used to extract new candidate periodic variables from the epoch photometry of the Hipparcos catalogue. The primary selection criterion is a signal-to-noise ratio. The dependence of this statistic on the number of observations is calibrated using about 30 000 randomly permuted Hipparcos data sets. A significance level of 0.1 per cent is used to extract a first batch of candidate variables. The second criterion requires that the optimal frequency be unaffected if the…
166 Citations

## Figures and Tables from this paper

### A systematic study of variability among OB-stars based on HIPPARCOS photometry

• Physics
• 2009
Context. Variability is a key factor for understanding the nature of the most massive stars, the OB stars. Such stars lie closest to the unstable upper limit of star formation. Aims. In terms of

### Detectability of micro-variables in the ASAS database: the Scorpius-Centaurus Complex

• Physics
• 2013
Nine years of photometry in the ASAS V-band catalogue is exploited to develop a method to select in an objective way the best quality data and detect low-amplitude variables, and the database contains much more information on photometric variables than retrieved commonly.

### Catalogue and Properties of δ Scuti Stars in Binaries

• Physics
• 2017
The catalogue contains 199 confirmed cases of binary systems containing at least one pulsating component of {\delta} Scuti type. The sample is divided into subgroups in order to describe the

### Long term photometric monitoring with the Mercator telescope. Frequencies and mode identification of

• Physics
• 2007
Aims. We selected a large sample of O-B stars that were considered as (candidate) slowly pulsating B, beta Cep, and Maia stars after the analysis of their hipparcos data. We analysed our new seven

### New periodic variable stars coincident with ROSAT sources discovered using SuperWASP

• Physics
• 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously

### Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes

• Physics, Geology
• 2009
Context. γ Dor stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of

### Automated classification of variable stars for All‐Sky Automated Survey 1–2 data

• Physics
• 2001
With the advent of surveys generating multi-epoch photometry and the discovery of large numbers of variable stars, the classification of these stars has to be automatic. We have developed such a

### NEW PHOTOMETRICALLY VARIABLE MAGNETIC CHEMICALLY PECULIAR STARS IN THE ASAS-3 ARCHIVE

• Physics
• 2016
The magnetic Ap or CP2 stars are natural atomic and magnetic laboratories. Strictly periodic changes are observed in the spectra and brightness of these stars, which allow the derivation of

### A search for photometric variability in magnetic chemically peculiar stars using ASAS-3 data

• Physics
• 2015
The (magnetic) chemically peculiar (CP) stars of the upper main sequence are well-suited laboratories for investigating the influence of magnetic fields on the stellar surface because they produce

### Time-series Doppler imaging of the red giant HD 208472 - Active longitudes and differential rotation

• Physics
• 2016
Context. HD 208472 is among the most active RS CVn binaries with cool starspots. Decade-long photometry has shown that the spots seem to change their longitudinal appearance with a period of about

## References

SHOWING 1-10 OF 19 REFERENCES

### Multiperiodicities from the Hipparcos epoch photometry and possible pulsation in early A‐type stars

A selection criterion based on the relative strength of the largest peaks in the amplitude spectra, and an information criterion are used in combination to search for multiperiodicities in Hipparcos

### Characterization of variable stars by robust wave variograms: An application to Hipparcos mission

• Physics
• 1999
Variogram analysis is applied to time series of variable stars. This method allows to characterize time- scales of varying signals. It is well suited for periodic and pseudo-periodic signals. The

### Hipparcos and Tycho Catalogues

This chapter describes various aspects of the Hipparcos and Tycho Catalogues useful for understanding the scientific exploitation considered in subsequent chapters. It describes some of the satellite

### The Hipparcos Mission

A review is presented of the European Space Agency's astrometric satellite project Hipparcos, for which the final data catalogues were published in June 1997. The emphasis is on those aspects that

### Eight new Δ Scuti stars

• Physics
• 1999
HD 23194, a member of the Pleiades, was found to pulsate with a period of about 30 min. The literature on the star is reviewed, and it is concluded that it may be a marginal Am star in a binary

### Statistical Aspects of the Hipparcos Photometric Data

• Environmental Science
• 1997
A brief outline of the ESA Hipparcos mission is presented, with special emphasis on photometric aspects. Limitations to interpretation of the data due to constraints on the reductions and as imposed

### Variable stars with the Hipparcos satellite

• Physics, Mathematics
• 1994
We present the photometric results of Hipparcos satellite for the first 1.5 year of the mission. For this period, the satellite gave numerous (20 to 120) photometric measurements of 120000 stars.

### Asteroseismology of Delta Scuti stars

This paper presents recent results for 5 Scuti stars based on measurements obtained by WET/Del ta Scuti Network as well as theoretical modeling of the pulsation modes. In particular, the two stars in

### Locally Weighted Regression: An Approach to Regression Analysis by Local Fitting

• Mathematics
• 1988
Abstract Locally weighted regression, or loess, is a way of estimating a regression surface through a multivariate smoothing procedure, fitting a function of the independent variables locally and in