Results 51 to 60 of about 84,708 (345)
Strange Dwarfs: A Review on the (in)Stability
UniverseWhite dwarfs are the remnants of stars not massive enough to become supernovae. This review explores the concept of strange dwarfs, a unique class of white dwarfs that contain cores of strange quark matter.
Francesco Di Clemente +2 more
doaj +1 more source
Open Astronomy, 2022 This article is a presentation of a project which is a statistical study of white dwarfs’ properties carried out based on the sample of the First Byurakan Survey Blue Stellar Objects (FBS BSOs) and the Catalogue of White Dwarfs.
Mickaelian Areg M. +4 more
doaj +1 more source
Transit surveys for Earths in the habitable zones of white dwarfs
, 2011 To date the search for habitable Earth-like planets has primarily focused on nuclear burning stars. I propose that this search should be expanded to cool white dwarf stars that have expended their nuclear fuel. I define the continuously habitable zone of
Agol +30 more
core +1 more source
Control of Covalent Bond Enables Efficient Magnetic Cooling
Advanced Materials, EarlyView.Giant and reversible magnetocaloric effect (MCE) is achieved by tuning covalency through sub‐unit‐cell chemical engineering, establishing a novel design principle for effective hysteresis control in magnetocaloric materials. Abstract Magnetic cooling, harnessing the temperature change in matter when exposed to a magnetic field, presents an energy ...
Xin Tang +16 more
wiley +1 more source
Constraints on Remnant Planetary Systems as a Function of Main-sequence Mass with HST/COS
The Astrophysical JournalAs the descendants of stars with masses less than 8 M _⊙ on the main sequence, white dwarfs provide a unique way to constrain planetary occurrence around intermediate-mass stars (spectral types BAF) that are otherwise difficult to measure with radial ...
Lou Baya Ould Rouis +10 more
doaj +1 more source
An overview of white dwarf stars
EPJ Web of Conferences, 2013 We present a brief summary of what is currently known about white dwarf stars, with an emphasis on their evolutionary and internal properties. As is well known, white dwarfs represent the end products of stellar evolution for the vast majority of stars ...
Charpinet S. +4 more
doaj +1 more source
Searching for strange quark matter objects among white dwarfs
Physics Letters B, 2022 The ground state of matter may be strange quark matter (SQM), not hadronic matter. A whole sequence of SQM objects, ranging from strange quark stars and strange quark dwarfs to strange quark planets, can stably exist according to this SQM hypothesis.
Abdusattar Kurban +3 more
doaj +1 more source
The Vegan Villain Sets Out to The End of Summer: Functionalized Coatings as Biohybrid UV‐Sensors
Advanced Materials Interfaces, EarlyView.This study introduces biohybrid coatings incorporating E. coli biomass expressing photoconvertible fluorescent proteins as UV‐A responsive elements. Upon irradiation at 400 nm, the coatings exhibit an irreversible fluorescence shift from green to red within 15 min. Notably, the photoconversion capability is retained after >1 year of storage.
Amelie Skopp +3 more
wiley +1 more source
White dwarf cooling sequences and cosmochronology
EPJ Web of Conferences, 2013 The evolution of white dwarfs is a simple gravothermal process. This means that their luminosity function, i.e. the number of white dwarfs per unit bolometric magnitude and unit volume as a function of bolometric magnitude, is a monotonically increasing ...
García-Berro E., Artigas A., Isern J.
doaj +1 more source
Detached white-dwarf close-binary stars -- CV's extended family [PDF]
, 1999 I review detached binaries consisting of white dwarfs with either other white dwarfs or low mass main-sequence stars in tight orbits around them. Orbital periods have been measured for 15 white dwarf/white dwarf systems and 22 white dwarf/M dwarf systems.
Marsh, T. R.
core +3 more sources