Results 41 to 50 of about 84,708 (345)

IRTF Observations of White Dwarfs with Possible Near-Infrared Excess [PDF]

, 2009
Near-infrared photometry and spectroscopy is obtained for a heterogeneous sample of nearby white dwarfs with possible excess flux as identified primarily in the Two Micron All Sky Survey. Among the sample of 43 stars are a number of white dwarfs that are
Adelman-McCarthy, Beauchamp, Becklin, Bergeron, Bergeron, Bergeron, Bergeron, Bergeron, Bergeron, Bergeron, Bochanski, Burleigh, Burleigh, Carpenter, Catalán, Copenhagen University Observatory, Cushing, DENIS Consortium, Dobbie, Downes, Dreizler, Dufour, Dupuis, Eggen, Eggen, Eisenstein, Farihi, Farihi, Farihi, Farihi, Farihi, Green, Green, Greenstein, Greenstein, Hagen, Holberg, Homeier, J. Farihi, Jordan, Jura, Jura, Kalirai, Kawka, Kilic, Kilic, Kilkenny, Kirkpatrick, Kleinman, Koester, Koester, Koester, Koester, Liebert, Liebert, Liebert, Liebert, Liebert, Lisker, Massey, McCook, McCook, Monet, Morales-Rueda, Napiwotzki, Nelemans, Pauli, Probst, Putney, Raymond, Rayner, Rebassa-Mansergas, Reid, Salim, Schmidt, Schmidt, Schmidt, Silvestri, Sion, Skrutskie, Steele, van Altena, Vennes, von Hippel, Voss, Wachter, Wellhouse, Williams, Wolff, Zacharias, Zacharias, Zuckerman, Zuckerman, Zuckerman   +93 more
core   +2 more sources

A new magnetic white dwarf : PG2329+267 [PDF]

, 1997
We have discovered that the white dwarf PG 2329+267 is magnetic, and assuming a centered dipole structure, has a dipole magnetic field strength of approximately 2.3MG.
Dhillon, V. S., Marsh, T. R., Moran, C.
core   +3 more sources

An Out‐of‐Place Etiology: Recognizing FMR1 Premutation in the Memory Clinic

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT The FMR1 gene premutation (55–200 CGG repeats) is usually associated with a wide range of symptoms and phenotypes within the Fragile X‐tremor/ataxia syndrome (FXTAS), but may also manifest as predominant or isolated cognitive decline. We describe three male patients referred for progressive cognitive impairment and behavioral changes. Standard
Guido Greco, Caterina Motta, Enrica Marchionni, Maria Rosaria D'Apice, Carlangelo Carrese, Giuseppe Novelli, Alessandro Martorana, Chiara Giuseppina Bonomi   +7 more
wiley   +1 more source

Constraints from Parallaxes and Average Period Spacings in the Asteroseismic Study of Eight Hydrogen-atmosphere Pulsating White Dwarfs

The Astrophysical Journal
With space missions such as Kepler, TESS, and Gaia, we have a wealth of data on pulsating white dwarfs that can be leveraged in white dwarf asteroseismology. We address the question of the proportion of white dwarfs with thin hydrogen layers versus those
Agnès Bischoff-Kim, Keaton J. Bell
doaj   +1 more source

The Pan-STARRS1 Planet Survey: Overview and first results

EPJ Web of Conferences, 2013
The Pan-STARRS1 Planet Survey (Pan-Planets) is a search for transiting extra-solar planets in the Galactic disk with a focus on planets around M-dwarfs and White dwarfs.
Kretschmann S., Obermeier C., Saglia R.P., Henning Th., Koppenhoefer J., Nikolov N.   +5 more
doaj   +1 more source

Research Paper: The Effect of the Generalized Uncertainty Principle with Maximum Length on the Size of White Dwarfs [PDF]

فیزیک کاربردی ایران
The challenge in developing a theory of quantum gravity stems from the fundamentally different ways the two theories describe physical systems. Quantum mechanics operates on discrete, probabilistic principles, while general relativity is a continuous ...
Sajad Parsamehr
doaj   +1 more source

Mesoporous Carbon Thin Films with Large Mesopores as Model Material for Electrochemical Applications

Advanced Functional Materials, EarlyView.
Mesoporous carbon thin films possessing 70 nm mesopores are prepared on titanium substrates by soft templating of resol resins with a self‐synthesized poly(ethylene oxide)‐block‐poly(hexyl acrylate) block copolymer. A strategy to avoid corrosion of the metal substrate is presented, and the films are extensively characterized in terms of morphology ...
Lysander Q. Wagner, Joshua Schober, Pascal Dippell, Chantal Glatthaar, Smail Mekhilef, David Schäfer, Hannes Hergert, Marcus Rohnke, Matthias T. Elm, Bernd M. Smarsly   +9 more
wiley   +1 more source

White-Dwarf Asteroseismology With the Kepler Space Telescope

Frontiers in Astronomy and Space Sciences, 2020
In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro H. Córsico, Alejandro H. Córsico   +1 more
doaj   +1 more source

Imprint of the Crystallization of Binary White Dwarfs on Gravitational Wave Observations with LISA

Physical Sciences Forum, 2023
Space-based gravitational-wave detectors, such as the Laser Interferometer Space Antenna, allow for the probing of the interior of white dwarfs in binaries through the imprints of tidal effects on the gravitational wave signal.
Loïc Perot, Nicolas Chamel
doaj   +1 more source

Learning Crystallographic Disorder: Bridging Prediction and Experiment in Materials Discovery

Advanced Materials, EarlyView.
Machine learning based computational materials discovery workflows have recently proposed thousands of potentially stable crystalline materials. However, the experimental realization of these predictions is often challenging because the models assume perfectly ordered structures.
Konstantin S. Jakob, Aron Walsh, Karsten Reuter, Johannes T. Margraf   +3 more
wiley   +1 more source