Two new ZZ Ceti pulsators from the HS and HE surveys

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dc.creatorSilvotti, R.
dc.creatorVoss, B.
dc.creatorBruni, I.
dc.creatorKoester, D.
dc.creatorReimers, D.
dc.creatorNapiwotzki, R.
dc.creatorHomeier, D.
dc.date2005-06-10
dc.date.accessioned2026-07-07T02:17:56Z
dc.date.available2026-07-07T02:17:56Z
dc.descriptionWe report the detection of nonradial g-mode oscillations in the DA white dwarfs HS1039+4112 (B=15.9) and HE1429-0343 (B=15.8) from time-series photometry made at the Loiano 1.5 m telescope. The two stars were previously selected as probable pulsators based on two-color photometry and spectral analysis respectively. Following our temperature and surface gravity determinations, HS1039+4112 (Teff=11200 K, logg=8.2) is located near the red edge of the ZZ Ceti instability strip, whereas HE1429-0343 (Teff=11400 K, logg=7.8) falls in the middle of the strip. Both stars show a multi-mode behavior with the main periods at about 850 and 970 s respectively, and relatively large amplitudes (~7% and ~2.5%).
dc.descriptionAstronomy & Astrophysics, submitted, 6 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0506228
dc.identifierhttp://arxiv.org/abs/astro-ph/0506228
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9303
dc.subjectAstrophysics
dc.titleTwo new ZZ Ceti pulsators from the HS and HE surveys
dc.typetext

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