Results 81 to 90 of about 114,517 (388)

New Pulsating DB White Dwarf Stars from the Sloan Digital Sky Survey

, 2008
We are searching for new He atmosphere white dwarf pulsators (DBVs) based on the newly found white dwarf stars from the spectra obtained by the Sloan Digital Sky Survey.
A. Nitta, Adelman-McCarthy, Anjum S. Mukadam, Beauchamp, Benvenuto, Clemens, D. E. Winget, Denis J. Sullivan, Eisenstein, Eisenstein, Fergal Mullally, Fontaine, Gunn, Gunn, J. Krzesinski, Kepler, Kepler, Kleinman, Kleinman, Kleinman, Metcalfe, Metcalfe, Mukadam, Mullally, Nather, R. E. Nather, S. J. Kleinman, S. O. Kepler, Stoughton, Susan E. Thompson, T. S. Metcalfe, Winget, York   +32 more
core   +1 more source

A radio-pulsing white dwarf binary star [PDF]

Nature, 2016
White dwarfs are compact stars, similar in size to Earth but ~200,000 times more massive. Isolated white dwarfs emit most of their power from ultraviolet to near-infrared wavelengths, but when in close orbits with less dense stars, white dwarfs can strip material from their companions, and the resulting mass transfer can generate atomic line and X-ray ...
L. K. Hardy, Thomas Kupfer, Matthias R. Schreiber, Franz-Josef Hambsch, Elizabeth R. Stanway, J. van Roestel, Odette Toloza, Klaus Bernhard, P. Frank, Elmé Breedt, Danny Steeghs, J. Bochinski, Stefan Hümmerich, Peter G. Jonker, Peter G. Jonker, Carole A. Haswell, Anna F. Pala, Christopher Lloyd, A. Aungwerojwit, Boris T. Gänsicke, T. R. Marsh, S. P. Littlefair, Steven G. Parsons, Peter J. Wheatley, V. S. Dhillon, V. S. Dhillon, V. S. Dhillon, S. Arjyotha, Detlev Koester   +28 more
openaire   +11 more sources

Spatially Resolved Mapping of Voltage‐Gated Proton Channel Activity Reveals Delayed Proton Transport in Local Microenvironments

Advanced Science, EarlyView.
A revolutionary imaging platform integrating quantitative single‐molecule photobleaching with ratiometric fluorescence probes enables high‐throughput (≈2300 individually resolvable channels) mapping of individual proton channels in a large field (≈3000 µm2), overcoming the spatial and temporal limitations of conventional electrophysiology.
Jiahua Zhuang, Yang Xu, Yuxian Lu, Shiyang Lyu, Jie Tan, Jiandong Feng   +5 more
wiley   +1 more source

Shocking and Mass Loss of Compact Donor Stars in Type Ia Supernovae

The Astrophysical Journal
Type Ia supernovae arise from thermonuclear explosions of white dwarfs accreting from a binary companion. Following the explosion, the surviving donor star leaves at roughly its orbital velocity.
Tin Long Sunny Wong, Christopher J. White, Lars Bildsten   +2 more
doaj   +1 more source

Are sdAs helium core stars?

Open Astronomy, 2017
Evolved stars with a helium core can be formed by non-conservative mass exchange interaction with a companion or by strong mass loss. Their masses are smaller than 0.5 M⊙. In the database of the Sloan Digital Sky Survey (SDSS), there are several thousand
Pelisoli Ingrid, Kepler S. O., Koester Detlev   +2 more
doaj   +1 more source

Limits on Unresolved Planetary Companions to White Dwarf Remnants of 14 Intermediate-Mass Stars

, 2009
We present Spitzer IRAC photometry of white dwarf remnants of 14 stars with M = 3-5 Msol. We do not detect mid-infrared excess around any of our targets.
Andrew Gould, Burgasser, Burrows, Burrows, Debes, Debes, Debes, Detlev Koester, Eisenstein, Farihi, Farihi, Farihi, Farihi, Fischer, Friedrich, Gould, Gould, Hubeny, Ida, Johnson, Jura, Jura, Jura, Kalirai, Kennedy, Kilic, Koester, Laws, Liebert, Mazeh, McCarthy, Mukremin Kilic, Mullally, Mullally, Villaver, Williams, Zuckerman   +36 more
core   +1 more source

An Exploration of Spotted White Dwarfs from K2 [PDF]

, 2018
The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018The Kepler K2 mission has discovered a significant population of white dwarf stars that exhibit photometric variability due to surface inhomogeneities ...
Clemens, J. Christopher, Hermes, J. J., Reding, Joshua S.   +2 more
core   +1 more source

SpaBalance: Balanced Learning for Efficient Spatial Multi‐Omics Decoding

Advanced Science, EarlyView.
SpaBalance is a computational framework that harmonizes multi‐omics learning via gradient equilibrium and dual‐stream feature decomposition, achieving superior clustering accuracy, biological interpretability, and scalable integration of three or more spatial omics modalities.
Yingbo Cui, Yong Zhao, Canqun Yang, Tao Tang, Xiangke Liao, Hongyu Zhang, Huiying Zhao, Zheng Wang, Yuansong Zeng   +8 more
wiley   +1 more source

Following the Pulsations in the Long-term Cooling of GW Librae and V386 Serpentis

The Astronomical Journal
GW Lib and V386 Ser are dwarf novae systems containing pulsating white dwarfs that underwent large 8–9 mag amplitude outbursts in 2007 and 2019, respectively.
Paula Szkody, Jan van Roestel, Keaton J. Bell, Zachary P. Vanderbosch, Anjum Mukadam, Simone Scaringi   +5 more
doaj   +1 more source

The population of single and binary white dwarfs of the Galactic bulge

, 2018
Recent Hubble Space Telescope observations have unveiled the white dwarf cooling sequence of the Galactic bulge. Although the degenerate sequence can be well fitted employing the most up-to-date theoretical cooling sequences, observations show a ...
Calamida, A., Cojocaru, R., García-Berro, E., Torres, S.   +3 more
core   +1 more source