Results 171 to 180 of about 806,786 (394)

Short review of the main achievements of the scalar field, fuzzy, ultralight, wave, BEC dark matter model

Frontiers in Astronomy and Space Sciences
The Scalar Field Dark Matter model has been known in various ways throughout its history; Fuzzy, BEC, Wave, Ultralight, Axion-like Dark Matter, etc. All of them consist in proposing that dark matter of the universe is a spinless field Φ that follows the ...
Tonatiuh Matos, Luis A. Ureña-López, Jae-Weon Lee   +2 more
doaj   +1 more source

Cosmic Chronometers: Constraining the Equation of State of Dark Energy. II. A Spectroscopic Catalog of Red Galaxies in Galaxy Clusters

, 2009
We present a spectroscopic catalog of (mostly) red galaxies in 24 galaxy clusters in the redshift range 0.17 < z < 0.92 obtained with the LRIS instrument on the Keck I telescope.
Ashby, Belloni, Bolton, Bolton, Brodwin, Conselice, Daniel Stern, Dorman, Dressler, Ebeling, Ebeling, Eisenhardt, Eisenhardt, Eisenstein, Ellingson, Ellingson, Jimenez, Jimenez, Koester, Lang, Licia Verde, Marc Kamionkowski, Moran, Moran, Moran, Raul Jimenez, Rosati, S. Adam Stanford, Sabra, Schawinkski, Soucail, Spinrad, Stanford, Stern, Treu, Yee, Zepf, Ziegler   +37 more
core   +1 more source

Galaxy Morphology

, 2013
Galaxy morphology is a product of how galaxies formed, how they interacted with their environment, how they were influenced by internal perturbations, AGN, and dark matter, and of their varied star formation histories. This article reviews the phenomenology of galaxy morphology and classification with a view to delineating as many types as possible and
openaire   +4 more sources

The Evolution of Galaxy Groups and of Galaxies Therein [PDF]

, 2007
Properties of groups of galaxies depend sensitively on the algorithm for group selection, and even the most recent catalogs of groups built from redshift-space selection should suffer from projections and infalling galaxies. The cosmo-dynamical evolution of groups from initial Hubble expansion to collapse and virialization leads to a fundamental track (
openaire   +4 more sources

Shelf‐Life Enhancement of Sugarcane Juice With Herbal Extracts: Extracted Through Novel Microwave‐Assisted Drying Extraction Technique

Food Safety and Health, EarlyView.
ABSTRACT Antioxidants in foods delay or prevent the oxidation of the food. Previously, synthetic antioxidants were commonly used in food formulations, but, due to safety concerns, interest in natural antioxidants has intensified. A novel microwave‐assisted drying extraction process was adopted to dry mint and coriander leaves.
Zarnab Asif, Tayyaba Alvi, Muhammad Kashif Iqbal Khan, Arslan Kareem   +3 more
wiley   +1 more source

The growth and assembly of a massive galaxy at z ~ 2

, 2009
We study the stellar mass assembly of the Spiderweb Galaxy (MRC 1138-262), a massive z = 2.2 radio galaxy in a protocluster and the probable progenitor of a brightest cluster galaxy.
A. W. Zirm, Benítez, Bertin, Binney, Blakeslee, Boylan-Kolchin, Bruzual, Bruzual, Chabrier, Chandraseker, Coe, Conroy, Conroy, De Lucia, di Matteo, Font, G. K. Miley, Gallagher, Guo, H. J. A. Röttgering, Hatch, Ivison, J. D. Kurk, Kodama, Kriek, Kurk, Malumuth, Maraston, Mihos, Miley, Miley, N. A. Hatch, Nesvadba, Overzier, Papovich, Pentericci, Pentericci, R. A. Overzier, Reddy, Salim, Saro, Saro, Sawicki, Schlegel, Seymour, Shapley, Spergel, Stevens, Venemans, Villar-Martin, Villar-Martín, Zirm, Zirm   +52 more
core   +1 more source

I. S. SHKLOVSKY AND LOW-FREQUENCY RADIO ASTRONOMY

Radio Physics and Radio Astronomy, 2017
Purpose: Proving of the high astrophysical significance of the low-frequency radio astronomy (decameter and adjacent hectometer and meter wavelengths), demonstration of the priority results of the Ukrainian low-frequency radio astronomy as well as ...
A. A. Konovalenko
doaj   +1 more source

Preliminary Classification of the Forms of Galaxies According to Their Stellar Population. II [PDF]

, 1959
W. W. Morgan
openalex   +1 more source

Are galaxies shy?

Astrophysics and Space Science, 2002
Until 1996, there was little evidence that most galaxies were ``shy'', i.e. that they would hide their stars behind a veil of dust and turn red when forming stars, radiating the bulk of their luminosity in the infrared (IR) at a given epoch of their history.
openaire   +3 more sources

Galaxies and Cladistics [PDF]

, 2009
The Hubble tuning fork diagram, based on morphology and established in the 1930s, has always been the preferred scheme for classification of galaxies. However, the current large amount of multiwavelength data, most often spectra, for objects up to very high distances, asks for more sophisticated statistical approaches.
openaire   +4 more sources