Results 81 to 90 of about 73,292 (294)

The seismic properties of low-mass He-core white dwarf stars [PDF]

, 2012
We present here a detailed pulsational study applied to low-mass He-core white dwarfs, based on full evolutionary models representative of these objects.
Althaus, L. G., Córsico, A. H., Hermes, J. J., Romero, A. D.   +3 more
core   +4 more sources

SDSS DR7 WHITE DWARF CATALOG [PDF]

The Astrophysical Journal Supplement Series, 2012
To appear ApJS, January, 2013.
Kleinman, S. J., Kepler, S. O., Koester, D., Pelisoli, Ingrid, Peçanha, Viviane, Nitta, A., Costa, J. E. S., Krzesinski, J., Dufour, P., Lachapelle, F. R., Bergeron, P., Yip, Ching Wa, Harris, Hugh C., Eisenstein, Daniel J., Althaus, Leandro Gabriel, Córsico, Alejandro Hugo   +15 more
openaire   +4 more sources

Detection of the Temperature Dependence of the White Dwarf Mass–Radius Relation with Gravitational Redshifts

The Astrophysical Journal
Models predict that the well-studied mass–radius relation of white dwarf stars depends on the temperature of the star, with hotter white dwarfs having larger masses at a given radius than cooler stars.
Nicole R. Crumpler, Vedant Chandra, Nadia L. Zakamska, Gautham Adamane Pallathadka, Stefan Arseneau, Nicola Gentile Fusillo, J. J. Hermes, Carles Badenes, Priyanka Chakraborty, Boris T. Gänsicke, Stephen P. Schmidt   +10 more
doaj   +1 more source

A Detailed Model Atmosphere Analysis of Hot White Dwarfs in DESI DR1

The Astrophysical Journal
We present a detailed model atmosphere analysis of hot white dwarfs in the Dark Energy Spectroscopic Instrument (DESI) Data Release 1. Our sample includes 19,321 unique targets with G _BP  −  G _RP ≤ 0.
Mukremin Kilic, Pierre Bergeron, Adam Moss, Simon Blouin, Matthew J. Green, Gracyn Jewett, Manuel Barrientos, Alexander L. Albright, Warren R. Brown   +8 more
doaj   +1 more source

Enabling the study of gene function in gymnosperms: Virus‐induced gene silencing in Ephedra tweedieana

Applications in Plant Sciences, EarlyView.
Abstract Premise As the sister clade to angiosperms, extant gymnosperms are crucial for reconstructing ancestral gene regulatory networks in seed plants. This highlights the need for model systems representing each of their distinct lineages. However, tools to quickly and effectively investigate gene function in gymnosperms are still limited due to the
Anthony G. K. Garcia, Jo Trang Bùi, Todd P. Michael, Stefanie M. Ickert‐Bond, Verónica S. Di Stilio   +4 more
wiley   +1 more source

Measuring the Mass–Radius Relation of White Dwarfs Using Wide Binaries

The Astrophysical Journal
Measuring the mass–radius relation of individual white dwarfs is an empirically challenging task that has been performed for only a few dozen stars. We measure the white dwarf mass–radius relation using the gravitational redshifts and radii of 135 white ...
Stefan Arseneau, Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska, Gautham Adamane Pallathadka, Nicole R. Crumpler, J. J. Hermes, Kareem El-Badry, Hans-Walter Rix, Keivan G. Stassun, Boris T. Gänsicke, Joel R. Brownstein, Sean Morrison   +12 more
doaj   +1 more source

Analysis of White Dwarfs with Strange-Matter Cores

, 2006
We summarize masses and radii for a number of white dwarfs as deduced from a combination of proper motion studies, Hipparcos parallax distances, effective temperatures, and binary or spectroscopic masses.
B O'Gorman, Bagchi M Ray S Dey M Dey J, F Weber, G J Mathews, I-S Suh, K Otsuki, Majczyna A, N Q Lan, Nomoto K, Schaffner-Bielich J, W Zech, Wood M A   +11 more
core   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs

The Anatomical Record, EarlyView.
Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy, Alice Nishigaki, Matthew C. Gage, Renato L. Previdelli   +3 more
wiley   +1 more source

Heat Stress in Quail: Impacts on Health and Productivity, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts physiological homeostasis in quail, inducing oxidative stress, immune dysregulation, and metabolic imbalance, which impair growth, reproduction, product quality, and welfare. Integrating nutritional, environmental, and genetic–epigenetic strategies enhances thermotolerance, sustains productivity, and supports climate‐smart quail ...
T. A. Eletu, I. A. Anjola, L. O. Fasasi, D. P. Fadipe, A. T. Afuye, F. O. Fasanya, O. E. Oke   +6 more
wiley   +1 more source