Publications (14)
SigSpec - I. Frequency- and Phase-Resolved Significance in Fourier Space
P. Reegen
Identifying frequencies with low signal-to-noise ratios in time series of stellar photometry and spectroscopy, and measuring their amplitude ratios and peak widths accurately, are…
Determination of stellar parameters of C-rich hydrostatic stars from spectro-interferometric observations
C. Paladini, G. T. van Belle, B. Aringer +4
Giant stars, and especially C-rich giants, contribute significantly to the chemical enrichment of galaxies. The determination of precise parameters for these stars is a necessary p…
A heuristic derivation of the uncertainty of the frequency determination in time series data
T. Kallinger, P. Reegen, W. W. Weiss
Context: Several approaches to estimate frequency, phase and amplitude errors in time series analyses were reported in the literature, but they are either time consuming to compute…
Cinderella - Comparison of INDEpendent RELative Least-squares Amplitudes
P. Reegen, M. Gruberbauer, L. Schneider +1
The identification of increasingly smaller signal from objects observed with a non-perfect instrument in a noisy environment poses a challenge for a statistically clean data analys…
MOST photometry of the roAp star 10 Aql
D. Huber, H. Saio, M. Gruberbauer +12
Context: We present 31.2 days of nearly continuous MOST photometry of the roAp star 10Aql. Aims:The goal was to provide an unambiguous frequency identification for this little stud…
Pulsation of the Delta Scuti star Theta2 Tau: New multisite photometry and modelling of instability
M. Breger, A. A. Pamyatnykh, W. Zima +3
The results of a multisite photometric campaign of Theta2 Tau are reported. This binary system consists of evolved and main-sequence A stars inside the instability strip. The 12th…
Gamma Dor and Gamma Dor - Delta Sct Hybrid Stars In The CoRoT LRa01
M. Hareter, P. Reegen, A. Miglio +7
A systematic search for gamma Dor and gamma Dor - delta Scuti hybrid pulsators was conducted on the CoRoT LRa01 Exo-archive yielding a total of 418 gamma Dor and 274 hybrid candida…
Abundance analysis of seven delta Scuti Stars
L. Fossati, K. Kolenberg, P. Reegen +1
The current knowledge of the abundance pattern in delta Scuti stars is based on the analysis of just a few field stars. We aim to determine the general chemical properties of the a…
Search for pulsating PMS stars in NGC 6383
K. Zwintz, M. Marconi, P. Reegen +1
A search for pulsating pre-main sequence (PMS) stars was performed in the young open cluster NGC 6383 using CCD time series photometry in Johnson B & V filters. With an age of only…
Stellar Model Analysis of the Oscillation Spectrum of eta Bootis Obtained from MOST
D. B. Guenther, T. Kallinger, P. Reegen +8
Eight consecutive low-frequency radial p-modes are identified in the G0 IV star eta Bootis based on 27 days of ultraprecise rapid photometry obtained by the MOST (Microvariability…
On the Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of lambda Bootis type stars
E. Paunzen, G. Handler, W. W. Weiss +7
The group of lambda Bootis type stars comprises late B- to early F-type, Population I objects which are basically metal weak, in particular the Fe group elements, but with the clea…
Pulsation of EE Cam
M. Breger, S. M. Rucinski, P. Reegen
EE Cam is a previously little studied Delta Scuti pulsator with amplitudes between those of the HADS (High-Amplitude Delta Scuti stars) group and the average low-amplitude pulsator…
A multisite photometric campaign on the Pre-Main-Sequence delta Scuti pulsator IP Per
V. Ripepi, S. Bernabei, M. Marconi +18
We present the results of a photometric multisite campaign on the Scuti Pre-Main-Sequence star IP Per. Nine telescopes have been involved in the observations, with a total of…
Reduction of time-resolved space-based CCD photometry developed for MOST Fabry Imaging data
P. Reegen, T. Kallinger, D. Frast +12
The MOST (Microvariability & Oscillations of STars) satellite obtains ultraprecise photometry from space with high sampling rates and duty cycles. Astronomical photometry or imagin…