Results 21 to 30 of about 1,482,374 (348)

A High-Accuracy Star Centroid Extraction Method Based on Kalman Filter for Multi-Exposure Imaging Star Sensors

open access: yesSensors, 2023
A multi-exposure imaging approach proposed in earlier studies is used to increase star sensors’ attitude update rate by N times. Unfortunately, serious noises are also introduced in the star image due to multiple exposures.
Wenbo Yu, Hui Qu, Yong Zhang
doaj   +1 more source

Star-forming Filament Models [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract New models of star-forming filamentary clouds are presented in order to quantify their properties and to predict their evolution. These 2D axisymmetric models describe filaments that have no core, one low-mass core, and one cluster-forming core.
openaire   +2 more sources

Reconciling Mass Functions with the Star-Forming Main Sequence Via Mergers [PDF]

open access: yes, 2017
We combine star formation along the `main sequence', quiescence, and clustering and merging to produce an empirical model for the evolution of individual galaxies.
Capak, Peter   +2 more
core   +3 more sources

The Star Formation Law in Molecule-Poor Galaxies [PDF]

open access: yes, 2013
In this paper, I investigate the processes that regulate the rate of star formation in regions of galaxies where the neutral interstellar medium is predominantly composed of non-star-forming HI.
Krumholz, Mark R.
core   +1 more source

PERAMALAN HARGA BITCOIN DENGAN METODE SMOOTH TRANSITION AUTOREGRESSIVE (STAR)

open access: yesE-Jurnal Matematika, 2022
One of the spectacular advances in technology in the economic field is the cryptocurrency it created. The fluctuating price of Bitcoin, is widely used as a means of making profit.
I GEDE MAHA HENDRA PRATAMA   +2 more
doaj   +1 more source

Gravitational instability and star formation in disk galaxies [PDF]

open access: yes, 1998
We present a general star formation law where star formation rate depends upon efficiency $\alpha$, timescale $\tau$ of star formation, gas component $\sigma_{g}$ of surface mass density and a real exponent $n$.
Pandey, U. S., van de Bruck, C.
core   +2 more sources

The NLRP3 Inflammasome May Contribute to Pathologic Neovascularization in the Advanced Stages of Diabetic Retinopathy

open access: yesScientific Reports, 2018
Diabetic retinopathy (DR) is a retinal microvascular disease characterized by inflammatory and angiogenic pathways. In this study, we evaluated NLRP3 inflammasome in a double transgenic mouse model, Akimba (Ins2 Akita xVEGF +/−), which demonstrates ...
Shyam S. Chaurasia   +12 more
doaj   +1 more source

A Well-Behaved Anisotropic Strange Star Model

open access: yesAdvances in Mathematical Physics, 2022
We obtain a new nonsingular exact model for compact stellar objects by using the Einstein field equations. The model is consistent with stellar star with anisotropic quark matter in the absence of electric field.
Amos V. Mathias, Jefta M. Sunzu
doaj   +1 more source

AGB Star Models [PDF]

open access: yesHighlights of Astronomy, 1992
AbstractAsymptotic giant branch star models are reviewed in relation to luminosity observations and chemical abundance observations of these stars.
openaire   +1 more source

ANALYTICAL MODELS FOR QUARK STARS [PDF]

open access: yesInternational Journal of Modern Physics D, 2007
We find two new classes of exact solutions to the Einstein–Maxwell system of equations. The matter content satisfies a linear equation of state consistent with quark matter; a particular form of one of the gravitational potentials is specified to generate solutions.
Komathiraj, K., Maharaj, S.D.
openaire   +3 more sources

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