The temporal changes of the pulsational periods of the pre-white dwarf PG 1159-035 (2008)
Costa, J. E. S., Kepler, S. O.
PG 1159-035, a pre-white dwarf with T=140000 K, is the prototype of the PG1159 spectroscopic class and the DOV pulsating class. Changes in the star cause variations in its oscillation periods. The...
The pulsation modes of the pre-white dwarf PG 1159-035 (2008)
Costa, J. E. S., Kepler, S. O., Winget, D. E., O'Brien, M. S., Kawaler, S. D., Costa, A. F. M., ...
Context. PG 1159-035, a pre-white dwarf with T_(eff) ≃ 140 000 K, is the prototype of both two classes: the PG 1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035...
Asteroseismological measurements on PG 1159-035, the prototype of the GW Vir variable stars (2007)
Córsico, A. H., Althaus, L. G., Kepler, S. O., Costa, J. E. S., Bertolami, M. M. Miller
An asteroseismological study of PG 1159-035, the prototype of the GW Vir variable stars, has been performed on the basis of detailed and full PG1159 evolutionary models presented by Miller Bertolami...
The pulsation modes of the pre-white dwarf PG 1159-035 (2007)
Costa, J. E. S., Kepler, S. O., Winget, D. E., O'Brien, M. S., Kawaler, S. D., Costa, A. F. M., ...
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035 photometric data...
Pulsational frequencies of the eclipsing delta-Scuti star HD 172189 (2007)
Costa, J. E. S., Michel, E., Pena, J., Creevey, O., Li, Z. P., Chevreton, M., ...
The eclipsing delta-Scuti star HD 172189 is a probable member of the open cluster IC 4756 and a promising candidate target for the CoRoT mission. The detection of pulsation modes is the first step in...
The Corot Book: Chap. V.5/ Extraction of the photometric information : corrections (2007)
Samadi, R., Fialho, F., Costa, J. E. S., Drummond, R., Da Silva, L. Pinheiro, Baudin, F., ...
We present here the set of corrections that will be applied to the raw data of the CoRoT mission. The aim is to correct the data for instrumental and environmental perturbations as well as to...
Measuring the evolution of the most stable optical clock G 117-B15A (2005)
Kepler, S. O., Costa, J. E. S., Castanheira, B. G., Winget, D. E., Mullally, Fergal, Nather, R. E., ...
We report our measurement of the rate of change of period with time dP/dt for the 215 s periodicity in the pulsating white dwarf G 117-B15A, the most stable optical clock known. After 31 years of...
Kanaan, A., Nitta, A., Winget, D.E., Kepler, S.O., Montgomery, M.H., Metcalfe, T.S., ...
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