Results 81 to 90 of about 5,073 (240)
The Dark Side of Neutron Stars
Advances in High Energy Physics, Volume 2013, Issue 1, 2013., 2013 We review severe constraints on asymmetric bosonic dark matter based on observations of old neutron stars. Under certain conditions, dark matter particles in the form of asymmetric bosonic WIMPs can be effectively trapped onto nearby neutron stars, where they can rapidly thermalize and concentrate in the core of the star.
Chris Kouvaris, Konstantin Belotsky
wiley +1 more source
Validation of the Gaia Early Data Release 3 Parallax Zero-point Model with Asteroseismology
Astronomical Journal, 2021 Gaia Early Data Release 3 (EDR3) provides trigonometric parallaxes for 1.5 billion stars, with reduced systematics compared to Gaia Data Release 2 and reported precisions better by up to a factor of 2.
J. Zinn
semanticscholar +1 more source
Pulsation in Intermediate-Mass Stars
Frontiers in Astronomy and Space Sciences, 2018 A new perspective of pulsation in stars within the δ Scuti instability strip has recently emerged as a result of Kepler observations. The majority of stars within the instability strip do not pulsate and practically all δ Scuti stars contain low ...
Luis A. Balona
doaj +1 more source
Revisiting the δ Scuti star FG Virginis using Kepler K2 and TESS data
Frontiers in Astronomy and Space Sciences, 2022 FG Virginis is a δ Scuti variable star that was the target of several ground-based multisite photometric campaigns from 1992 to 2004. Over 75 pulsation frequencies were detected (Breger et al., Astron.
Joyce A. Guzik +3 more
doaj +1 more source
Asteroseismology with the Kepler mission [PDF]
Communications in Asteroseismology, 2007 NASA's Kepler mission will fly a photometer based on a wide-field Schmidt camera with a 0.95 m aperture, staring at a single field continuously for at least 4 years. Although the mission's principal aim is to locate transiting extrasolar planets, it will provide an unprecedented opportunity to make asteroseismic observations on a wide variety of stars.
J. Christensen‐Dalsgaard
openalex +5 more sources
From Dust Bowl to Dust Bowl: Soils are Still Very Much a Frontier of Science
Soil Science Society of America Journal, Volume 75, Issue 6, Page 2037-2048, November 2011., 2011 When the Soil Science Society of America was created, 75 yr ago, the USA was suffering from major dust storms, causing the loss of enormous amounts of topsoil as well as human lives. These catastrophic events reminded public officials that soils are essential to society's well‐being. The Soil Conservation Service was founded and farmers were encouraged
Philippe C. Baveye +7 more
wiley +1 more source
Nonanalytic Relativistic r-Modes of Slowly Rotating Nonbarotropic Neutron Stars
Universe, 2022 We show that the r-modes of slowly rotating nonbarotropic neutron stars are described by nonanalytic functions of stellar angular velocity, which makes the perturbation techniques, used so far in the r-mode theoretical studies, inapplicable.
Kirill Y. Kraav +2 more
doaj +1 more source
T35: A Small Automatic Telescope for Long‐Term Observing Campaigns
Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010 The T35 is a small telescope (14″) equipped with a large format CCD camera installed in the Sierra Nevada Observatory (SNO) in Southern Spain. This telescope will be a useful tool for the detecting and the studying of pulsating stars, particularly, in open clusters.
Susana Martín-Ruiz +11 more
wiley +1 more source
Astronomical JournalWe present a catalog of fundamental stellar properties for ∼7500 evolved stars, including stellar radii and masses, determined from the combination of spectroscopic observations from the Apache Point Observatory Galactic Evolution Experiment, part of the
J. Schonhut-Stasik +16 more
semanticscholar +1 more source
Tracing early stellar evolution with asteroseismology: pre-main sequence stars in NGC 2264
EPJ Web of Conferences, 2015 Asteroseismology has been proven to be a successful tool to unravel details of the internal structure for different types of stars in various stages of their main sequence and post-main sequence evolution.
Zwintz Konstanze +4 more
doaj +1 more source