Results 101 to 110 of about 666,750 (380)

Are brightest halo galaxies central galaxies? [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
It is generally assumed that the central galaxy in a dark matter halo, that is, the galaxy with the lowest specific potential energy, is also the brightest halo galaxy (BHG), and that it resides at rest at the centre of the dark matter potential well. This central galaxy paradigm (CGP) is an essential assumption made in various fields of astronomical ...
Fabio Fontanot, Fabio Fontanot, Xiaohu Yang, Frank C. van den Bosch, Ramin A. Skibba, Ramin A. Skibba, Houjun Mo, Surhud More, Surhud More   +8 more
openaire   +3 more sources

Large scale hydrodynamic modes of oscillations in gaseous disks of flat galaxies with a kink on rotation curves

Open Astronomy, 2018
The properties of unstable large-scale hydrodynamic (HD) modes of oscillations in the gaseous disk of a flat galaxy with a rotation curve having a velocity jump in the inner region of the disk are numerically investigated.
Torgashin Yury, Omurkanov Turgunbek
doaj   +1 more source

Surface Brightness Plateau in S4G Galaxies

Galaxies, 2020
Using 3.6-μm data from 2112 galaxies, we show that, contrary to widely held expectations of a continuous steep decline, radial surface brightness profiles of galaxies tend to flatten and form extended plateaus beyond 27–28 magAB/arcsec2.
Alan Sipols, Alex Pavlovich
doaj   +1 more source

AhR‐Dependent Induction of β‐Defensin 1 in Colonic Epithelial Cells Regulates Cross‐Talk between Gut Microbiota and Immune Response Leading to Attenuation of Colitis

Advanced Science, EarlyView.
This study identifies a key signaling pathway involving the environmental sensor AhR and antimicrobial peptides, such as BD‐1, in the regulation of intestinal homeostasis. It highlights the role of BD‐1 in regulating gut microbiota and the intestinal immune response.
Manikandan Palrasu, Amarnath Marudamuthu, Khadija Kakar, Hamida Hamida, Shruthi Thada, Rohan Gupta, Kiesha Wilson, Taylor Carter, Yin Zhong, Archana Saxena, Xiaoming Yang, Narendra Singh, Philip Brandon Busbee, Jie Li, Monica Garcia‐Buitrago, Prakash Nagarkatti, Mitzi Nagarkatti   +16 more
wiley   +1 more source

Evolutionary population synthesis: models, analysis of the ingredients and application to high‐z galaxies [PDF]

, 2004
Evolutionary population synthesis models for a wide range of metallicities, ages, star formation histories, initial mass functions and horizontal branch morphologies, including blue morphologies at high metallicity, are computed.
C. Maraston
semanticscholar   +1 more source

Current star formation in early-type galaxies and the K+A phenomenon

, 2008
We present the results of an effort to identify and study a sample of the likely progenitors of elliptical (E) and lenticular (S0) K+A galaxies. To achieve this, we have searched a sample ~11,000 nearby (m(r)
Abazajian, Abazajian, Abazajian, Balogh, Balogh, Bekki, Bernardi, Binette, Blanton, Blanton, Bower, Bruzual, Calzetti, Chabrier, Dehen, Dressler, Eisenstein, Faber, Ferland, Fukugita, Fukugita, Gerhard, Gomez, Goto, Goto, Goto, Goudfrooij, Goudfrooij, Graves, Gunn, Hogg, Hogg, Hubble, Ivezic, J. F. Helmboldt, Kauffmann, Kauffmann, Kaviraj, Kennicutt, Kewley, Kormendy, Kormendy, Kormendy, Kormendy, Krajnovi, Lauer, Liu, Lupton, Macchetto, McGaugh, Miller, Nakamura, Nolan, O'Donnell, Osterbrock, Phillips, Pier, Pilyugin, Pizzella, Quintero, R. A. M. Walterbos, Richards, Sarzi, Schawinski, Schlegel, Scorza, Smith, Stoughton, Strauss, T. Goto, Terlevich, Thomas, Thomas, Tran, Tremonti, Treu, Treu, van Dokkum, Verdes-Montenegro, Vogt, Worthey, Xu, Yamauchi, Yang, Yi, York, Young, Zabludoff   +87 more
core   +1 more source

A galaxy of folds [PDF]

Protein Science, 2009
AbstractMany protein classification systems capture homologous relationships by grouping domains into families and superfamilies on the basis of sequence similarity. Superfamilies with similar 3D structures are further grouped into folds. In the absence of discernable sequence similarity, these structural similarities were long thought to have ...
Andreas Biegert, Andreas Biegert, Andrei N. Lupas, Johannes Söding, Vikram Alva, Michael Remmert, Michael Remmert   +6 more
openaire   +5 more sources

The Host Galaxy Fluxes of Active Galaxy Nuclei Are Generally Overestimated by the Flux Variation Gradient Method

Universe
In terms of the variable nature of normal active galaxy nuclei (AGN) and luminous quasars, a so-called flux variation gradient (FVG) method has been widely utilized to estimate the underlying non-variable host galaxy fluxes.
Minxuan Cai, Zhen Wan, Zhenyi Cai, Lulu Fan, Junxian Wang   +4 more
doaj   +1 more source

High Redshift Quasars, Emission Lines and ‘Cloudy’

Open Astronomy, 2011
I describe some of the outstanding “big picture” questions in quasar research and how the development of the plasma simulation code Cloudy is being guided to answer them.
Ferland Gary J.
doaj   +1 more source

Predictions and Outcomes for the Dynamics of Rotating Galaxies

Galaxies, 2020
A review is given of a priori predictions made for the dynamics of rotating galaxies. One theory—MOND—has had many predictions corroborated by subsequent observations.
Stacy McGaugh
doaj   +1 more source