SIMBAD references

2009MNRAS.397..453K - Mon. Not. R. Astron. Soc., 397, 453-457 (2009/July-3)

Two new pulsating DB stars from the EC survey, EC 04207-4748 and EC 05221-4725.

KILKENNY D., O'DONOGHUE D., CRAUSE L.A., HAMBLY N. and MacGILLIVRAY H.

Abstract (from CDS):

We report the discovery of pulsations in two DB stars found in the Edinburgh-Cape blue object survey. The light curve of EC 04207-4748 appears to be dominated by a strong variation at 2235 µHz (447s) and its first overtone near 4475 µHz (223s). Two other peaks appear in the periodograms of all three data sets for this star; near 2370 µHz (∼420s) and 3000 µHz (∼333s), though these are less accurately defined. EC 05221-4725 is less easy to specify with the currently available data; it appears to have one coherent frequency near 1114µHz (898s), but is obviously multiperiodic and probably has several more frequencies near the one clearly observed.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): stars: individual: EC 04207-4748 - stars: individual: EC 05221-4725 - stars: oscillations - white dwarfs

Simbad objects: 5

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