2004A&A...413..623C

Query : 2004A&A...413..623C

2004A&A...413..623C - Astronomy and Astrophysics, volume 413, 623-634 (2004/1-2)

Observations of the Pulsating White Dwarf G 185-32.

CASTANHEIRA B.G., KEPLER S.O., MOSKALIK P., ZOLA S., PAJDOSZ G., KRZESINSKI J., O'DONOGHUE D., KATZ M., BUCKLEY D., VAUCLAIR G., DOLEZ N., CHEVRETON M., BARSTOW M.A., KANAAN A., GIOVANNINI O., PROVENCAL J., KAWALER S.D., CLEMENS J.C., NATHER R.E., WINGET D.E., WATSON T.K., YANAGIDA K., DIXSON J.S., HANSEN C.J., BRADLEY P.A., WOOD M.A., SULLIVAN D.J., KLEINMAN S.J., MEISTAS E., SOLHEIM J.-E., BRUVOLD A., LEIBOWITZ E., MAZEH T., KOESTER D. and MONTGOMERY M.H.

Abstract (from CDS):

We observed the pulsating hydrogen atmosphere white dwarf G 185-32 with the Whole Earth Telescope in 1992. We report on a weighted Fourier transform of the data detecting 18 periodicities in its light curve. Using the Hubble Space Telescope Faint Object Spectrograph time resolved spectroscopy, and the wavelength dependence of the relative amplitudes, we identify the spherical harmonic degree (l) for 14 pulsation signals. We also compare the determinations of effective temperature and surface gravity using the excited modes and atmospheric methods, obtaining Teff=11960±80K, logg=8.02±0.04 and M=0.617±0.024M☉.

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Journal keyword(s): stars: white dwarfs - stars: variables: general - stars: oscillations - stars: individual: G 185-32 - stars: evolution

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HS 0507+0434B WD* 05 10 13.5215260416 +04 38 55.135549140   15.52 15.31 15.63   DA2.3 65 0
2 V* DN Dra WD* 16 48 25.6318375106 +59 03 22.658985521   12.34 12.17 12.44   DA4.0 214 0
3 V* PY Vul WD* 19 37 13.7502269447 +27 43 18.733503670   13.14   12.7   DA4.0 128 0
4 V* PT Vul WD* 19 52 27.8765406336 +25 09 29.175649632   15.13   15.1   DA4.2 69 0
5 V* ZZ Psc WD* 23 28 47.6365087803 +05 14 54.235051503   13.17   13.0   DA4.1 484 0

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