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


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.23CEST22:47:27

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.

Abstract Copyright:

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 - 2020
#notes
1 HS 0507+0434B WD* 05 10 13.5216587720 +04 38 55.134907779   15.52 15.31 15.63   DA2.3 53 0
2 V* DN Dra WD* 16 48 25.6321433630 +59 03 22.663406299   12.40   11.7   DA4.0 197 0
3 V* PY Vul WD* 19 37 13.7502254298 +27 43 18.736648968   13.14   12.7   DA4.0 116 0
4 V* PT Vul WD* 19 52 27.8765609250 +25 09 29.176771316   15.13   15.1   DA4.2 64 0
5 V* ZZ Psc WD* 23 28 47.6364608228 +05 14 54.234982405   13.17   13.0   DA4.1 436 0

    Equat.    Gal    SGal    Ecl

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2020.09.23-22:47:27

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