Results 21 to 30 of about 553 (184)

The Large Magellanic Cloud Supernova Remnant MCSNR J0550-6823

open access: yesThe Astrophysical Journal, 2023
We describe radio, optical, and X-ray observations of this rather faint, old Large Magellanic Cloud (LMC) supernova remnant. The [O iii ] emission forms a distinct shell, the remnant of the outer shock, which encloses the radio and X-ray emission and ...
Frederick D. Seward, Sean D. Points
doaj   +1 more source

Taxonomy based on limited genomic markers may underestimate species diversity of rockhopper penguins and threaten their conservation

open access: yesDiversity and Distributions, Volume 27, Issue 11, Page 2277-2296, November 2021., 2021
Abstract Aim Delimiting recently diverged species is challenging. During speciation, genetic differentiation may be distributed unevenly across the genome, as different genomic regions can be subject to different selective pressures and evolutionary histories.
María José Frugone   +20 more
wiley   +1 more source

Photometry of 40 Large Magellanic Cloud Cepheids [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1999
We present V and I-c CCD photometry for 40 Large Magellanic Cloud (LMC) Cepheids at 1 to 3 epochs. This represents a significant increase in the number of LMC Cepheids with I-band data, and, as we show, is a useful addition to the sample that can be used to calibrate the period-luminosity relations in these important bands.
Tanvir, N. R., Boyle, A.
openaire   +2 more sources

The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005

open access: yesThe Astronomical Journal, 2023
The ancient Large Magellanic Cloud (LMC) globular cluster NGC 2005 has recently been reported to have an ex situ origin, thus, setting precedents that the LMC could have partially formed from smaller merged dwarf galaxies.
Andrés E. Piatti, Yutaka Hirai
doaj   +1 more source

Comparison of Rutherford's atomic model with the Standard Model of particle physics and other models

open access: yesJournal of the Royal Society of New Zealand, Volume 51, Issue 3-4, Page 538-556, September ‐ December 2021., 2021
ABSTRACT Ernest Rutherford is known almost universally as the discoverer of the structure of the atom. He is less well known for his discovery of the proton. Even less well known is a set of hypotheses on the structure of matter that was proposed by Newton 300 years ago.
Philip Yock
wiley   +1 more source

Is the Large Magellanic Cloud a Large Microlensing Cloud? [PDF]

open access: yesThe Astrophysical Journal, 2000
An expression is provided for the self-lensing optical depth of the thin LMC disk surrounded by a shroud of stars at larger scale heights. The formula is written in terms of the vertical velocity dispersion of the thin disk population. If tidal forcing causes 1-5 % of the disk mass to have a height larger than 6 kpc and 10-15 % to have a height above 3
Evans, N. W., Kerins, E. J.
openaire   +2 more sources

THE ABUNDANCES OF THE ELEMENTS OF THE MAGELLANIC CLOUDS

open access: yesOdessa Astronomical Publications, 2010
The results of the spectroscopic researches of classical Chepheids of the Magellanic Clouds (MC) are presented in this paper. 21 spec tra for the Large Magellanic Cloud (LMC) and 10 for the Small Magellanic Cloud (SMC) were investigated.
F. A. Chekhonadskikh
doaj   +1 more source

An efficient way to use MS‐CLEAN associated with Shannon's entropy

open access: yesIET Image Processing, Volume 15, Issue 10, Page 2319-2331, August 2021., 2021
Abstract This article covers deconvolution methods in the context of radio astronomical images. A new formulation is proposed to deal with negative brightness, deconvoluting separately the positive and negative brightness of the sky. The positive brightness is physically possible, but negative brightness is a degradation product.
Ramon G. Campos, Evandro O. T. Salles
wiley   +1 more source

Hypervelocity runaways from the Large Magellanic Cloud [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2017
We explore the possibility that the observed population of Galactic hypervelocity stars (HVSs) originate as runaway stars from the Large Magellanic Cloud (LMC). Pairing a binary evolution code with an N-body simulation of the interaction of the LMC with the Milky Way, we predict the spatial distribution and kinematics of an LMC runaway population.
Boubert, D.   +3 more
openaire   +3 more sources

CHEMICAL EVOLUTION OF THE LARGE MAGELLANIC CLOUD [PDF]

open access: yesThe Astrophysical Journal, 2012
39 pages and 22 figures, accepted in ...
Bekki, Kenji, Tsujimoto, Takuji
openaire   +2 more sources

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