Gravitational Redshift Detection from the Magnetic White Dwarf Harbored in RX J1712.6–2414
The Astrophysical Journal, 2023 Gravitational redshift is a fundamental parameter that allows us to determine the mass-to-radius ratio of compact stellar objects, such as black holes, neutron stars, and white dwarfs (WDs).
Takayuki Hayashi +4 more
doaj +1 more source
Captured at millimeter wavelengths: a flare from the classical T Tauri star DQ Tauri [PDF]
Astronomy & Astrophysics, 2008 For several hours on 2008 April 19 the T Tauri spectroscopic binary DQ Tau was observed to brighten, reaching a maximum detected flux of 468 mJy and likely making it (briefly) the brightest object at 3 mm in the Taurus star-forming region. We present the light curve of a rarely before observed millimeter flare originating in the region around a pre ...
Salter, D. M. +2 more
openaire +3 more sources
The White Dwarfs within 25 Parsecs of the Sun: Kinematics and Spectroscopic Subtypes [PDF]
, 2014 We present the fractional distribution of spectroscopic subtypes, range and distribution of surface temperatures, and kinematical properties of the white dwarfs within 25pc of the sun.
Holberg, J. B. +5 more
core +4 more sources
Photometry of two DQ white dwarfs - search for spots [PDF]
, 2012 Aims. The intensity profiles of the C_2 Swan bands in cool DQ white dwarfs cannot be adequately fitted with models that otherwise succesfully reproduce spectral features of the molecule CH in these stars.
A. Berdyugin +13 more
core +1 more source
Forbidden Line Emission in the Eccentric Spectroscopic Binaries DQ Tauri and UZ Tauri E Monitored over an Orbital Period [PDF]
, 2004 We present echelle spectroscopy of the close pre-main-sequence binary star systems DQ Tau and UZ Tau-E. Over a 16 day time interval we acquired 14 nights of spectra for DQ Tau and 12 nights of spectra for UZ Tau-E.
Hartigan, P., Huerta, M., White, R. J.
core +1 more source
The OmegaWhite Survey for short-period variable stars – IV. Discovery of the warm DQ white dwarf OW J175358.85−310728.9 [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 11 pages, 8 figures, 7 tables.
Macfarlane, S. A. +12 more
openaire +4 more sources
The origin of peculiar molecular bands in cool DQ white dwarfs [PDF]
, 2010 The DQ white dwarfs are stars whose atmosphere is enriched with carbon, which for cool stars ($T_{\rm eff}
Kowalski, Piotr M.
core +1 more source
SDSS J142625.71+575218.3: A Prototype for A New Class of Variable White Dwarf [PDF]
, 2008 We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. On the basis of our theoretical calculations, the star SDSS J142625.71 + 575218.3 is the only object expected to pulsate ...
DeGennaro, Steven +5 more
core +1 more source
Stability of the r-modes in white dwarf stars [PDF]
, 1999 Stability of the r-modes in rapidly rotating white dwarf stars is investigated. Improved estimates of the growth times of the gravitational-radiation driven instability in the r-modes of the observed DQ Her objects are found to be longer (probably ...
B. J. Owen +21 more
core +2 more sources
Detailed Spectroscopic and Photometric Analysis of DQ White Dwarfs
, 2005 We present an analysis of spectroscopic and photometric data for cool DQ white dwarfs based on improved model atmosphere calculations. In particular, we revise the atmospheric parameters of the trigonometric parallax sample of Bergeron et al.(2001), and ...
Bues I. +8 more
core +3 more sources