A far ultraviolet archival study of cataclysmic variables.: I.: FUSE and HST stis spectra of the exposed white dwarf in dwarf nova systems

被引:21
|
作者
Godon, Patrick [1 ]
Sion, Edward M. [1 ]
Barrett, Paul E. [2 ]
Hubeny, Ivan [3 ]
Linnell, Albert P. [4 ]
Szkody, Paula [4 ]
机构
[1] Villanova Univ, Dept Astron & Astrophys, Villanova, PA 19085 USA
[2] USN Observ, Washington, DC 20392 USA
[3] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
[4] Univ Washington, Dept Astron, Seattle, WA 98195 USA
来源
ASTROPHYSICAL JOURNAL | 2008年 / 679卷 / 02期
基金
美国国家科学基金会;
关键词
stars : dwarf novae (SS Aur; EY Cyg; VW Hyi; RU Peg; EK TrA); white dwarfs;
D O I
10.1086/587504
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a synthetic spectral analysis of Far Ultraviolet Spectroscopic Explorer ( FUSE) and Hubble Space Telescope Space Telescope Imaging Spectrograph (HST STIS) spectra of five dwarf novae above and below the period gap during quiescence. We use our synthetic spectral code, including options for the treatment of the hydrogen quasi-molecular satellite lines (for low-temperature stellar atmospheres), non-LTE (NLTE) approximation ( for high-temperature stellar atmospheres), and for one system (RU Peg) we model the interstellar medium ( ISM) molecular and atomic hydrogen lines. In all the systems presented here the FUV flux continuum is due to the white dwarf (WD). These spectra also exhibit some broad emission lines. In this work we confirm some of the previous FUV analysis results, but we also present new results. For four systems we combine the FUSE and STIS spectra to cover a larger wavelength range and to improve the spectral fit. This work is part of our broader HST archival research program, in which we aim to provide accurate system parameters for cataclysmic variables above and below the period gap by combining FUSE and HST FUV spectra.
引用
收藏
页码:1447 / 1466
页数:20
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共 12 条
  • [1] HST/STIS spectroscopy of the exposed white dwarf in the short-period dwarf nova EK TrA
    Gänsicke, BT
    Szkody, P
    Sion, EM
    Hoard, DW
    Howell, S
    Cheng, FH
    Hubeny, I
    [J]. ASTRONOMY & ASTROPHYSICS, 2001, 374 (02): : 656 - 661
  • [2] White Dwarf Photospheric Abundances in Cataclysmic Variables. I. SS Aurigae and TU Mensae*
    Godon, Patrick
    Sion, Edward M.
    [J]. ASTROPHYSICAL JOURNAL, 2021, 908 (02):
  • [3] A far-ultraviolet study of the hot white dwarf in the dwarf nova WW Ceti
    Godon, P
    Seward, L
    Sion, EM
    Szkody, P
    [J]. ASTRONOMICAL JOURNAL, 2006, 131 (05): : 2634 - 2642
  • [4] Modeling the hot components in cataclysmic variables: Info on the white dwarf and hot disk from GALEX, FUSE, HST and SDSS
    Szkody, Paula
    [J]. SHORT-PERIOD BINARY STARS: OBSERVATIONS, ANALYSES, AND RESULTS, 2008, 352 : 137 - 146
  • [5] Dwarf nova oscillations and quasi-periodic oscillations in cataclysmic variables - I. Observations of VW Hyi
    Woudt, PA
    Warner, B
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 333 (02) : 411 - 422
  • [6] Archival HST and IUE study of the dwarf novae AH Herculis and CM Delphini:: Exposed white dwarfs?
    Lyons, K
    Stys, D
    Slevinsky, R
    Sion, E
    Wood, JH
    [J]. ASTRONOMICAL JOURNAL, 2001, 122 (01): : 327 - 331
  • [7] Archival HST and IUE study of the dwarf novae AH Her and CM Del: Exposed white dwarfs?
    Sion, E
    Lyons, K
    Stys, D
    Slevinsky, R
    Wood, JH
    [J]. EVOLUTION OF BINARY AND MULTIPLE STAR SYSTEMS: A MEETING IN CELEBRATION OF PETER EGGLETON'S 60TH BIRTHDAY, 2001, 229 : 355 - 361
  • [8] MOCCA-SURVEY database I. Accreting white dwarf binary systems in globular clusters - I. Cataclysmic variables - present-day population
    Belloni, Diogo
    Giersz, Mirek
    Askar, Abbas
    Leigh, Nathan
    Hypki, Arkadiusz
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 462 (03) : 2950 - 2969
  • [9] Far-ultraviolet Space Telescope Imaging Spectrometer spectra of the white dwarf REJ 1032+532. I. Interstellar line of sight
    Holberg, JB
    Bruhweiler, FC
    Barstow, MA
    Dobbie, PD
    [J]. ASTROPHYSICAL JOURNAL, 1999, 517 (02): : 841 - 849
  • [10] MOCCA-SURVEY database I. Accreting white dwarf binary systems in globular clusters - II. Cataclysmic variables - progenitors and population at birth
    Belloni, Diogo
    Giersz, Mirek
    Rocha-Pinto, Helio J.
    Leigh, Nathan W. C.
    Askar, Abbas
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 464 (04) : 4077 - 4095