Results 171 to 180 of about 1,877,533 (362)

Gaia - A White Dwarf Discovery Machine [PDF]

arXiv, 2006
The Gaia data will help to improve the construction of a luminosity function for the disk and the halo and will provide a more accurate determination of the age of our solar neighborhood. Moreover, reliable stellar dynamical investigations of the disk and halo components will be possible.
arxiv  

Remediation of the picture‐text problem for learners exhibiting reading deficits

Journal of Applied Behavior Analysis, EarlyView.
Abstract Early reading materials are replete with pictures. Pictures purportedly improve reading comprehension and motivation; however, the simultaneous presentation of pictures and text can also impede textual control for some readers. Attempts to remediate restricted stimulus control in picture–text compounds suggest that omitting the picture element
Taylor K. Lewis, Tom Cariveau
wiley   +1 more source

Hydrogen-Atmosphere White Dwarfs Are Less Likely To Be Found with Wide-Binary Companions [PDF]

arXiv
The fraction of white dwarfs found in wide binaries is estimated by cross referencing a catalogue of wide binaries with catalogues photometrically determined white-dwarf candidates and spectroscopically confirmed white dwarf stars. The wide-binary fraction of white dwarfs with hydrogen-dominated atmospheres is about 5%, but the fraction of white dwarfs
arxiv  

Investigating the reasons behind a later or missed diagnosis of attention‐deficit/hyperactivity disorder in young people: A population cohort study

JCPP Advances, EarlyView.
Abstract Background Attention Deficit Hyperactivity Disorder (ADHD) is a common neurodevelopmental condition, more often diagnosed in males. In many individuals, particularly females, ADHD is diagnosed later or missed, the reasons for this are not fully understood.
Isabella Barclay, Kapil Sayal, Tamsin Ford, Ann John, Mark J. Taylor, Anita Thapar, Kate Langley, Joanna Martin   +7 more
wiley   +1 more source

Using 3.4 μm Variability toward White Dwarfs as a Signpost of Remnant Planetary Systems

The Astrophysical Journal
Roughly 2% of white dwarfs harbor planetary debris disks detectable via infrared excesses, but only a few percent of these disks show a gaseous component, distinguished by their double-peaked emission at the near-infrared calcium triplet.
Joseph A. Guidry, J. J. Hermes, Kishalay De, Lou Baya Ould Rouis, Brison B. Ewing, B. C. Kaiser   +5 more
doaj   +1 more source

Note on the Spectrum of a Probable White Dwarf in h Persei. (Plate 1.) [PDF]

, 1931
Yngve Öhman
openalex   +1 more source

On the Theory of White Dwarf Stars: II. The Accretion of Interstellar Matter by White Dwarfs [PDF]

, 1952
L. Mestel
openalex   +1 more source

Age is not a primary risk factor for ACL injury—A comprehensive review of ACL injury and reinjury risk factors confounded by young patient age

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Revision surgery after anterior cruciate ligament reconstruction (ACL‐R) is hypothesized to be the result of an interplay between factors associated with the anatomy, physiological characteristics and environment of the patient. The multifactorial nature of revision ACL‐R risk is difficult to quantify, and evidence regarding the independent ...
Bálint Zsidai, Ramana Piussi, Philipp W. Winkler, Armin Runer, Pedro Diniz, Riccardo Cristiani, Eric Hamrin Senorski, Volker Musahl, Michael T. Hirschmann, Romain Seil, Kristian Samuelsson   +10 more
wiley   +1 more source

A Test of Spectroscopic Age Estimates of White Dwarfs Using Wide WD+WD Binaries

The Astrophysical Journal
White dwarf stars have been used for decades as precise and accurate age indicators. This work presents a test of the reliability of white dwarf total ages when spectroscopic observations are available. We conduct follow-up spectroscopy of 148 individual
Tyler M. Heintz, J. J. Hermes, P.-E. Tremblay, Lou Baya Ould Rouis, Joshua S. Reding, B. C. Kaiser, Jennifer L. van Saders   +6 more
doaj   +1 more source

The Planets and the White Dwarfs [PDF]

, 1950
W. H. Ramsey
openalex   +1 more source