Results 21 to 30 of about 5,024 (304)

The white dwarf binary pathways survey IV: three close white dwarf binaries with G-type secondary stars [PDF]

, 2021
Constraints from surveys of post common envelope binaries (PCEBs) consisting of a white dwarf plus an M-dwarf companion have led to significant progress in our understanding of the formation of close white dwarf binary stars with low-mass companions. The
Gansicke, B. T., Rebassa Mansergas, Alberto, Pastén, E., Zorotovic, Mónica, Schreiber, M. R., Rebassa-Mansergas, A., Toloza, O., Ren, J. J., Toloza, Odette, Parsons, Steven, Irawati, P., Hernández, M., Gänsicke, Boris T., Ren, J.J., Tappert, C., Hernandez, M.S., Rittipruk, P., Lagos, F., Schreiber, M.R., Raddi, R., Zorotovic, M., Hernandez, M. S., Irawati, Puji, Ren, Juanjuan, Tovmassian, G., Parsons , S. G., Lagos, Francisco, Raddi, Roberto, Parsons, S. G., Gänsicke, B.T., Parsons, S.G., Schreiber, Mathias R., Rebassa-Mansergas, Alberto, Tovmassian, Gagik   +33 more
core   +1 more source

Searching for benchmark systems containing ultra-cool dwarfs and white dwarfs

EPJ Web of Conferences, 2013
We have used the 2MASS all-sky survey and WISE to look for ultracool dwarfs that are part of multiple systems containing main sequence stars. We cross-matched L dwarf candidates from the surveys with Hipparcos and Gliese stars, finding two new systems ...
Pinfield D.J., Gomes J.I.
doaj   +1 more source

A Status Report On A Planet Search Around White Dwarf Stars [PDF]

, 2010
We have continued monitoring a pilot sample of 15 isolated, pulsating DA white dwarfs for center-of-mass motion caused by a planetary companion. Roughly 7 years into our survey, we have preliminary evidence for periodic variations in pulse arrival times ...
Mullally, F., Miller, G. F., Ellis, J. L., Hermes, J. J., Winget, D. E., Montgomery, M. H.   +5 more
core   +1 more source

Seismological Studies of Pulsating DA White Dwarfs Observed with the Kepler Space Telescope and K2 Campaigns 1–8

The Astrophysical Journal, 2023
AllS single stars that are born with masses up to 8.5–10 M _⊙ will end their lives as white dwarf (WD) stars. In this evolutionary stage, WDs enter the cooling sequence, where the stars radiate away their thermal energy and are basically cooling.
Weston Hall, Barbara G. Castanheira, Agnès Bischoff-Kim   +2 more
doaj   +1 more source

The Search for White Dwarf Binaries in Astronomical Survey Data [PDF]

, 2021
Extremely low mass (ELM) white dwarfs are excellent laboratories for studying a variety of astrophysical phenomena, including common-envelope evolution, gravitational wave emission, and merger physics.
Kosakowski, Alekzander
core  

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 ...
Marsh, T. R., Gänsicke, B. T., Hümmerich, S., Hambsch, F.-J., Bernhard, K., Lloyd, C., Breedt, E., Stanway, E. R., Steeghs, D. T., Parsons, S. G., Toloza, O., Schreiber, M. R., Jonker, P. G., van Roestel, J., Kupfer, T., Pala, A. F., Dhillon, V. S., Hardy, L. K., Littlefair, S. P., Aungwerojwit, A., Arjyotha, S., Koester, D., Bochinski, J. J., Haswell, C. A., Frank, P., Wheatley, P. J.   +25 more
openaire   +10 more sources

White Dwarf.Org - Establishing a Permanent Endowment for the Whole Earth Telescope

Open Astronomy, 2003
White Dwarf Research Corporation is a non-profit organization dedicated to scientific research and public education on topics relevant to white dwarf stars.
Metcalfe Travis S.
doaj   +1 more source

The Highly Accurate Relation Between the Radius and Mass of the White Dwarf Star From Zero to Finite Temperature

Frontiers in Astronomy and Space Sciences, 2022
In this research, first considering the electron–electron interaction in the high-density Fermi electron gas at T = 0 K, this interaction causes the pressure 2/137 time less than the original value.
Ting-Hang Pei
doaj   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

, 2022
Hepatology, EarlyView.
Robert J. Fontana, Iris Liou, Adrian Reuben, Ayako Suzuki, M. Isabel Fiel, William Lee, Victor Navarro   +6 more
wiley   +1 more source

ELM of ELM-WD: An Extremely-low-mass Hot Star Discovered in LAMOST Survey

The Astronomical Journal, 2023
The extremely-low-mass white dwarfs (ELM WDs) and pre-ELM WDs are helium-core white dwarfs with mass
Hailong Yuan (袁海龙), Zhenwei Li (李振威), Zhongrui Bai (白仲瑞), Yiqiao Dong (董义乔), Mengxin Wang (汪梦欣), Sicheng Yu (余思成), Xuefei Chen (陈雪飞), Yongheng Zhao (赵永恒), Yaoquan Chu (褚耀泉), Haotong Zhang (张昊彤)   +9 more
doaj   +1 more source