Results 21 to 30 of about 120,169 (292)

Understanding Fomalhaut as a Cooper pair [PDF]

open access: yes, 2017
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.Fomalhaut is a nearby stellar
Feng, Fabo, Jones, Hugh R. A.
core   +3 more sources

Simulation of astronomical aspects of Middle Neolithic circular ditch systems [PDF]

open access: yesArchéoSciences, 2009
Introduction The oldest Middle European monuments (approx. 4850/4750 – 4550/4500 BC) were presented in the Lower Austrian County Exhibition at Heldenberg in 2005 (Daim & Neubauer, 2005). The Middle Neolithic circular ditch systems, or Kreisgrabenanlagen (KGA), are known all over Middle Europe. These wooden monuments form a first pan-European phenomenon,
Zotti, Georg   +3 more
openaire   +4 more sources

Can Cosmological Simulations Reproduce the Spectroscopically Confirmed Galaxies Seen at z ≥ 10?

open access: yesThe Astrophysical Journal Letters, 2023
Recent photometric detections of extreme ( z > 10) redshift galaxies from the JWST have been shown to be in strong tension with existing simulation models for galaxy formation and in the most acute case, in tension with ΛCDM itself.
B. W. Keller   +3 more
doaj   +1 more source

Survival of Massive Star-forming Galaxies in Cluster Cores Drives Gas-Phase Metallicity Gradients : The Effects of Ram Pressure Stripping [PDF]

open access: yes, 2017
Recent observations of galaxies in a cluster at z=0.35 show that their integrated gas-phase metallicities increase with decreasing cluster-centric distance.
Gupta, Anshu   +4 more
core   +3 more sources

Observability of intermittent radio sources in galaxy groups and clusters [PDF]

open access: yes, 2018
22 pages, 24 figures. This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.
Krause, Martin   +2 more
core   +4 more sources

Photometric Accuracy of Deconvolved Simulated Astronomical Images

open access: yesThe Astrophysical Journal, 2005
A study of the photometric accuracy of deconvolved astronomical images was undertaken by processing two simulated images with several well-known algorithms. The simulations consisted of an image of a simple star field and an image of an active galactic nucleus (AGN).
Stephen R. McNeil, J. Ward Moody
openaire   +1 more source

DeepSurveySim: Simulation Software and Benchmark Challenges for Astronomical Observation Scheduling

open access: yesDeepSurveySim: Simulation Software and Benchmark Challenges for Astronomical Observation Scheduling, 2023
Modern astronomical surveys have multiple competing scientific goals. Optimizing the observation schedule for these goals presents significant computational and theoretical challenges, and state-of-the-art methods rely on expensive human inspection of simulated telescope schedules.
Voetberg, Maggie, Nord, Brian
openaire   +2 more sources

Polarimetric variations of binary stars. II. Numerical simulations for circular and eccentric binaries in Mie scattering envelopes [PDF]

open access: yes, 2001
We present numerical simulations of the periodic polarimetric variations produced by a binary star placed at the center of an empty spherical cavity inside a circumbinary ellipsoidal and optically thin envelope made of dust grains.
Bastien P.   +9 more
core   +3 more sources

Integrated optics applied to astronomical aperture synthesis III: simulation of components optimized for astronomical interferometry [PDF]

open access: yesInternational Conference on Space Optics — ICSO 1997, 2018
This paper, “Integrated optics applied to astronomical aperture synthesis III: simulation of components optimized for astronomical interferometry," was presented as part of International Conference on Space Optics—ICSO 1997, held in Toulouse, France.
Pierre Benech   +5 more
openaire   +1 more source

Stellar streams as gravitational experiments I. The case of Sagittarius [PDF]

open access: yes, 2017
Tidal streams of disrupting dwarf galaxies orbiting around their host galaxy offer a unique way to constrain the shape of galactic gravitational potentials. Such streams can be used as leaning tower gravitational experiments on galactic scales.
Famaey, Benoit   +4 more
core   +2 more sources

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