Results 31 to 40 of about 2,559,994 (252)
An Update on Pulsations in Accreting White Dwarfs [PDF]
, 2018 The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018Since the last white dwarf workshop, there is continuing evidence that long (hrs to days) periodicities are being found in white dwarfs that are undergoing
Szkody, Paula, Mukadam, Anjum
core +1 more source
Binaries discovered by the SPY project. IV, Five single-lined DA double white dwarfs [PDF]
, 2005 We present results from our ongoing follow-up observations of double white dwarf binaries detected in the ESO SN Ia Progenitor SurveY (SPY). We discuss our observing strategy and data analysis and present the orbital solutions of five close double white ...
Roelofs, Gijs H. A. +27 more
core +3 more sources
White Dwarfs In Ngc6397 And M4: Constraints On The Physics Of Crystallization [PDF]
, 2010 We explore the physics of crystallization in the dense Coulomb plasma of the deep interiors of white dwarf stars using the color-magnitude diagram and luminosity function constructed from Hubble Space Telescope photometry of the globular cluster M 4 and ...
Kepler, S. O. +9 more
core +1 more source
A Precise Radial Velocity Search for Giant Planets orbiting polluted White Dwarfs [PDF]
, 2018 The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018We present a feasibility study for extending the well-known radial velocity technique to search for planetary companions around white dwarfs.
Williams, K.A., Endl, M.
core +1 more source
Magnetic dynamos in white dwarfs – II. Relating magnetism and pollution [PDF]
, 2021 We investigate whether the recently suggested rotation and crystallization driven dynamo can explain the apparent increase of magnetism in old metal polluted white dwarfs.
Parsons, Steven G. +7 more
core +1 more source
Enigmas from the Sloan Digital Sky Survey DR7 White Dwarf Catalog
, 2021 We report results from a continuation of our searches for magnetic white dwarfs paired in a detached binary with a non-degenerate companion, using the Data Release 7 (DR7) of the Sloan Digital Sky Survey.
Liebert, James +3 more
core
Advanced Functional Materials, EarlyView.Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley +1 more source
White Dwarf Cooling Curves and Searches For White Dwarfs [PDF]
Highlights of Astronomy, 1998 White dwarf (WD) evolution is essentially a cooling problem in two parts. Degenerate electrons in the core provide the support while non-degenerate C and O ions provide the thermal reservoir (Koester & Chanmugam 1990, Kawaler 1996). The rate of energy loss through the non-degenerate envelope of H and He—segregated by gravitational settling—is ...
openaire +1 more source
, 2022 In 1995, Glendenning et al. postulated the existence of some exotic kinds of compact stars ressembling white dwarfs but containing a very dense core made of strange quark matter.
Perot, Loïc +2 more
core
The Influence of Tidal Heating on the Habitability of Planets Orbiting White Dwarfs
The Astrophysical Journal Letters, 2023 In recent years, there have been a growing number of observations indicating the presence of rocky material in short-period orbits around white dwarfs. In this Letter, we revisit the prospects for habitability around these post-main-sequence star systems.
Juliette Becker +3 more
doaj +1 more source