2001A&A...373..674W


Query : 2001A&A...373..674W

2001A&A...373..674W - Astronomy and Astrophysics, volume 373, 674-682 (2001/7-2)

FUSE observations of hot white dwarfs.

WOLFF B., KRUK J.W., KOESTER D., ALLARD N.F., FERLET R. and VIDAL-MADJAR A.

Abstract (from CDS):

We have analyzed FUSE observations of six hot white dwarf stars: four DA white dwarfs with Teff>45000K, the DAO Feige 55 (Teff≃55000K), and the DA CD-38°10980 (Teff≃24000K). Photospheric lines from SiIV, PV, and SVI can be observed in the majority of the five hotter objects. Feige55 shows also several other heavier elements. The measured abundances agree only partly with the predictions of the radiative levitation theory. We attribute this to current limitations of the models and the probable presence of mass loss. In the spectrum of CD-38°10980, we have observed the quasi-molecular satellites of Lβ. This confirms theoretical predictions about the visibility range for these features.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - white dwarfs - ultraviolet: stars

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 237287 SB* 04 36 06.2144665641 +55 24 44.086310792   9.23   7.8   K1 82 0
2 RX J0457.2-2807 WD* 04 57 13.3226414126 -28 07 52.721053602 12.44 13.65 13.92 14.23   DA.8 104 0
3 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 1010 0
4 Feige 55 WD* 12 04 38.5356512387 +60 32 08.086450892 11.974 13.224 13.568 13.717 13.896 DAO.9 76 0
5 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 449 0
6 RX J1629.0+7804 WD* 16 29 10.278576 +78 04 39.91620   12.74 12.95 13.03   DA1.2 85 0
7 GD 246 WD* 23 12 21.6156138550 +10 47 04.257261526 11.578 12.772 13.090 13.238 13.418 DA.9 206 0
8 LB 1526 WD* 23 34 02.1937634480 -47 14 26.650283705   13.13 13.46     DA.9 68 0

    Equat.    Gal    SGal    Ecl

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2021.07.27-06:43:29

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