Results 1 to 10 of about 14,620 (167)
Astronomy and Astrophysics Review, 2009 The Astronomy and Astrophysics Review, 17 (3)
M Gudel, Yael Naze, Gudel Manuel
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The neutron stars of Soft X-ray Transients
Astronomy and Astrophysics Review, 1998 Soft X-ray Transients (SXRTs) have long been suspected to contain old, weakly magnetic neutron stars that have been spun up by accretion torques. After reviewing their observational properties, we analyse the different regimes that likely characterise the neutron stars in these systems across the very large range of mass inflow rates, from the peak of ...
S Campana, M Colpi, S Mereghetti
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HAZMAT. IX. An Analysis of the UV and X-Ray Evolution of Low-mass Stars in the Era of Gaia
The Astrophysical Journal, 2023 Low-mass stars (≤1 M _⊙ ) are some of the best candidates for hosting planets with detectable life because of these stars’ long lifetimes and relative ratios of planet to star mass and radius.
Tyler Richey-Yowell +8 more
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The Astrophysical Journal, 2023 Open clusters are thought to be the birthplace of most stars in the galaxy. Thus, they are excellent laboratories for investigating stellar evolution, and X-ray properties of various types of stars (including binary stars, evolved stars, and compact ...
Steven Chen +6 more
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The Astronomical Journal, 2023 The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of exoplanets.
Alexander Brown +10 more
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The Astrophysical Journal, 2022 We present Chandra X-ray observations of six previously identified Peter Pan objects, rare ∼40 Myr systems with evidence of primordial disk retention. We observe X-ray luminosities (0.8–3.0 keV) ranging from log L _x ∼ 27.7–29.1.
Emily Laos +8 more
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Searching for Gamma-Ray Binaries in Multiwavelength Catalogs
Universe, 2021 The number of gamma-ray binaries currently known is still so small that even a new finding represents a significant expansion of its population. We present a possible hunting strategy based on screening different catalogs to filter potential peculiar ...
Josep Martí, Pedro L. Luque-Escamilla
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Hydrogen-triggered X-Ray Bursts from SAX J1808.4−3658? The Onset of Nuclear Burning
The Astrophysical Journal, 2023 We present a study of weak, thermonuclear X-ray bursts from the accreting millisecond X-ray pulsar SAX J1808.4−3658. We focus on a burst observed with the Neutron Star Interior Composition Explorer on 2019 August 9, and describe a similar burst observed ...
Sierra Casten +2 more
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NEW X-RAY DETECTIONS OF WNL STARS [PDF]
The Astronomical Journal, 2012 Previous studies have demonstrated that putatively single nitrogen-type Wolf-Rayet stars (WN stars) without known companions are X-ray sources. However, almost all WN star X-ray detections so far have been of earlier WN2 - WN6 spectral subtypes. Later WN7 - WN9 subtypes (also known as WNL stars) have proved more difficult to detect, an important ...
Skinner, Stephen Lee +4 more
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X-Raying the Star Formation History of the Universe [PDF]
The Astrophysical Journal, 2000 The current models of early star and galaxy formation are based upon the hierarchical growth of dark matter halos, within which the baryons condense into stars after cooling down from a hot diffuse phase. The latter is replenished by infall of outer gas into the halo potential wells; this includes a fraction previously expelled and preheated, due to ...
Cavaliere, A., Giacconi, R., Menci, N.
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