Results 151 to 160 of about 2,016,206 (398)
Anatomical Sciences Education, EarlyView.Abstract Entertainment is deeply rooted in education, from wise‐cracking teachers to health documentaries. In the context of anatomy, this already complex relationship is entwined with deeply significant ethical considerations, often related to the field's reliance on human tissue, yet it remains unexplored.
Lucas D. Wilmshurst +4 more
wiley +1 more source
A Proper Motion Survey for White Dwarfs with the Wide Field Planetary Camera 2
, 2002 We have performed a search for halo white dwarfs as high proper motion objects in a second epoch WFPC2 image of the Groth-Westphal strip. We identify 24 high proper motion objects with mu > 0.014 ''/yr.
Baraffe I. +7 more
core +1 more source
A Tidally-Disrupted Asteroid Around the White Dwarf G29-38 [PDF]
, 2003 The infrared excess around the white dwarf G29-38 can be explained by emission from an opaque flat ring of dust with an inner radius 0.14 of the radius of the Sun and an outer radius approximately equal to the Sun's.
Koester D. +5 more
core +3 more sources
Numerical Simulations of Gaseous Disks Generated from Collisional Cascades at the Roche Limits of White Dwarf Stars [PDF]
, 2017 We consider the long-term evolution of gaseous disks fed by the vaporization of small particles produced in a collisional cascade inside the Roche limit of a 0.6 white dwarf. Adding solids with radius at a constant rate into a narrow annulus leads to two
S. Kenyon, B. Bromley
semanticscholar +1 more source
Essential work, invisible workers: The role of digital curation in COVID‐19 Open Science
Journal of the Association for Information Science and Technology, Volume 76, Issue 4, Page 703-717, April 2025.Abstract In this paper, we examine the role digital curation practices and practitioners played in facilitating open science (OS) initiatives amid the COVID‐19 pandemic. In Summer 2023, we conducted a content analysis of available information regarding 50 OS initiatives that emerged—or substantially shifted their focus—between 2020 and 2022 to address ...
Irene V. Pasquetto +2 more
wiley +1 more source
Revisiting the Impact of Axions in the Cooling of White Dwarfs
, 2012 It has been shown that the shape of the luminosity function of white dwarfs can be a powerful tool to check for the possible existence of DFSZ-axions. In particular, Isern et al.
Althaus, Leandro +2 more
core
PLANETARY ENGULFMENT AS A TRIGGER FOR WHITE DWARF POLLUTION [PDF]
, 2016 The presence of a planetary system can shield a planetesimal disk from the secular gravitational perturbations due to distant outer massive objects (planets or stellar companions).
C. Petrovich, D. Muñoz
semanticscholar +1 more source
New Arabic Records From Cairo on Supernovae 1181 and 1006
Astronomische Nachrichten, EarlyView.ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer +3 more
wiley +1 more source
White-dwarf asteroseismology: An update [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe vast majority of stars that populate the Universe will end their evolution as white-dwarf stars. Applications of white dwarfs include cosmochronology, evolution of planetary systems, and also as laboratories to study non-standard physics and crystallization. In addition to the knowledge of their surface properties from spectroscopy combined
openaire +4 more sources
Astronomische Nachrichten, EarlyView.ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin +10 more
wiley +1 more source