Results 11 to 20 of about 811,965 (260)

Astronomy Lab I: Photometric Experiments for Physics Students [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2023
As physics laboratories are an integral part of the physics education across the globe, astronomy laboratories are also a necessary part of the astronomy education.
Reza Rezaei
doaj   +1 more source

REQUIEM-2D: A Diversity of Formation Pathways in a Sample of Spatially Resolved Massive Quiescent Galaxies at z ∼ 2

open access: yesThe Astrophysical Journal, 2023
REQUIEM-2D (Resolving Quiescent Magnified Galaxies with 2D Grism Spectroscopy) comprises a sample of eight massive ( ${\rm{log}}({M}_{\ast }/{M}_{\odot })\gt 10.6$ ) strongly lensed quiescent galaxies at z ∼ 2.
Mohammad Akhshik   +18 more
doaj   +1 more source

Optical Polarimetry in Undergraduate Education [PDF]

open access: yesEPJ Web of Conferences, 2019
Polarimetry plays an important part in observational astronomy, but it is all too often given limited attention in astronomy textbooks. Coupled with a sometimes confusing mathematical introduction, students may feel that polarization is a difficult ...
Topasna Gregory
doaj   +1 more source

A Nondetection of Iron in the First High-resolution Emission Study of the Lava Planet 55 Cnc e

open access: yesThe Astronomical Journal, 2023
Close-in lava planets represent an extreme example of terrestrial worlds, but their high temperatures may allow us to probe a diversity of crustal compositions.
Kaitlin C. Rasmussen   +19 more
doaj   +1 more source

The Universe on a Desktop: Observational Astronomy Simulations in the Instructional Laboratory [PDF]

open access: yes, 2000
Though the value of hands-on learning has long been recognised by educators, it is difficult to design laboratories in astronomy classes that present realistic astrophysical techniques to undergraduate students.
Laurence A. Marschall   +1 more
core   +1 more source

Open skies: the National Radio Astronomy Observatory and its impact on US radio astronomy [PDF]

open access: yes, 2020
This open access book on the history of the National Radio Astronomy Observatory covers the scientific discoveries and technical innovations of late 20th century radio astronomy with particular attention to the people and institutions involved.
Kellermann, Kenneth I.   +5 more
core   +1 more source

Testing general relativity with gravitational-wave catalogs: The insidious nature of waveform systematics

open access: yesiScience, 2021
Summary: Gravitational-wave observations of binary black holes allow new tests of general relativity (GR) to be performed on strong, dynamical gravitational fields.
Christopher J. Moore   +3 more
doaj   +1 more source

Solving the Traveling Telescope Problem with Mixed-integer Linear Programming

open access: yesThe Astronomical Journal, 2023
The size and complexity of modern astronomical surveys has grown to the point where, in many cases, traditional human scheduling of observations are tedious at best and impractical at worst.
Luke B. Handley   +2 more
doaj   +1 more source

MeerKAT Holography Measurements in the UHF, L, and S Bands

open access: yesThe Astronomical Journal, 2023
Radio holographic measurements using the MeerKAT telescope are presented for each of its supported observing bands, namely UHF (544–1087 MHz), L (856–1711 MHz), and S (1750–3499 MHz).
Mattieu S. de Villiers
doaj   +1 more source

Near-Infrared Observing Conditions at the BOAO and the SOAO [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
Korea Astronomy Observatory(KAO) has been developing the KAONICS, KAO Near-Infrared Camera System, which will be used for near-infrared observations in the ground-based telescopes of Korea.
Bongkon Moon   +6 more
doaj   +1 more source

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