Results 81 to 90 of about 43,226 (214)

Elliptical Galaxies and Bulges of Disk Galaxies: Summary of Progress and Outstanding Issues

open access: yes, 2015
This is the summary chapter of a review book on galaxy bulges. Bulge properties and formation histories are more varied than those of ellipticals. I emphasize two advances: 1 - "Classical bulges" are observationally indistinguishable from ellipticals ...
A. C. Fabian   +222 more
core   +1 more source

DUST-DRIVEN WIND FROM DISK GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2011
We study gaseous outflows from disc galaxies driven by radiation pressure on dust grains. We include the effect of bulge and dark matter halo and show that the existence of such an outflow implies a maximum value of disc mass-to-light ratio. We show that the terminal wind speed is proportional to the disc rotation speed in the limit of a cold gaseous ...
Sharma, Mahavir   +2 more
openaire   +2 more sources

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

On the Orbital Evolution of Binaries with Polar Circumbinary Disks

open access: yesThe Astrophysical Journal Letters
Binaries occur in many astrophysical systems, from young protostellar binaries in star-forming regions to supermassive black hole binaries in galaxy centers.
Cheng Chen   +2 more
doaj   +1 more source

The Mechanism and Timescale of Nodal Precession: Two Nuclear Stellar Disks in the Galactic Center

open access: yesOpen Astronomy, 2015
A dynamical model of interacting nuclear stellar rings in the central parsec of our Galaxy is constructed. We discuss the physical sources of nodal precession and of the associated time scales.
Kondratyev B. P.
doaj   +1 more source

Galactic Model Parameters and Spatial Density of Cataclysmic Variables in the Gaia Era: New Constraints on Population Models

open access: yesThe Astronomical Journal, 2023
The spatial distribution, Galactic model parameters, and luminosity function of cataclysmic variables (CVs) are established using reestimated trigonometric parallaxes from Gaia DR3.
Remziye Canbay   +3 more
doaj   +1 more source

An Extended Krylov Subspace Method for Decoding Edge‐Based Compressed Images by Homogeneous Diffusion

open access: yesNumerical Linear Algebra with Applications, Volume 33, Issue 1, February 2026.
ABSTRACT The heat equation is often used to inpaint dropped data in inpainting‐based lossy compression schemes. We propose an alternative way to numerically solve the heat equation by an extended Krylov subspace method. The method is very efficient with respect to the computation of the solution of the heat equation at large times.
Volker Grimm, Kevin Liang
wiley   +1 more source

COSMOS-Web: The Role of Galaxy Interactions and Disk Instabilities in Producing Starbursts at z < 4

open access: yesThe Astrophysical Journal
We study of the role of galaxy–galaxy interactions and disk instabilities in producing starburst activity in galaxies out to z = 4. For this, we use a sample of 387 galaxies with robust total star formation rate measurements from Herschel, gas masses ...
Andreas L. Faisst   +53 more
doaj   +1 more source

UGC8802: A MASSIVE DISK GALAXY IN FORMATION [PDF]

open access: yesThe Astrophysical Journal, 2010
12 pages, 10 figures, accepted for publication in ApJ, typo ...
Moran, Sean M.   +13 more
openaire   +4 more sources

Enhancing Wholemeal Bread Shelf Life Using Optimized Mixtures of Cinnamon, Clove, and Bay Leaf Essential Oils

open access: yesChemistry &Biodiversity, Volume 23, Issue 1, January 2026.
ABSTRACT This study evaluated the preservative potential of essential oils (EOs) in bakery products by identifying fungal contaminants in bread, testing the in vitro antifungal activity of a mixture of cinnamon, clove, and bay leaf EOs, and assessing their effectiveness in extending shelf life. Fungal identification revealed the presence of Penicillium,
Mariana Pereira Silveira   +7 more
wiley   +1 more source

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