Results 111 to 120 of about 142,796 (289)

Evidence for AGN Feedback in Galaxy Clusters and Groups

open access: yesAdvances in Astronomy, 2012
The current generation of flagship X-ray missions, Chandra and XMM-Newton, has changed our understanding of the so-called “cool-core” galaxy clusters and groups.
Myriam Gitti   +2 more
doaj   +1 more source

Chromosome‐scale genome assembly of the South American fruit fly, Anastrepha fraterculus sp.1

open access: yesInsect Science, EarlyView.
Anastrepha fraterculus sp. 1 is a major fruit fly pest in Argentina, currently controlled through chemical treatments and traps. This study aims to enhance the genomic understanding of this species to support the development of sterile insect technique as well as the use of innovative technologies.
Máximo Rivarola   +15 more
wiley   +1 more source

Response of Fecal Bacteria and Fungi to Tannin‐Rich Diets in Sika Deer (Cervus nippon): Evidence from Both Feeding Experiments and Field Investigations

open access: yesIntegrative Zoology, EarlyView.
Feeding with tannin‐rich diets altered the fecal microbial composition and increased the relative abundance of tannin‐degrading microbes. We hypothesize that fecal bacteria and fungi may play important roles in helping herbivores adapt to tannin‐rich diets but respond to different tannin concentrations varies.
Di Zhu   +5 more
wiley   +1 more source

Studying Galaxy Formation and Evolution from Local Group Galaxies [PDF]

open access: yes, 2007
8 pages, 2 figures. To appear in the proceedings for the VII Scientific Meeting of the Spanish Astronomical Society (SEA) held in Barcelona, September 12-15 ...
openaire   +2 more sources

The Local Group and Other Neighboring Galaxy Groups [PDF]

open access: yesThe Astronomical Journal, 2005
Over the last few years, rapid progress has been made in distance measurements for nearby galaxies based on the magnitude of the tip of red giant branch stars. Current CCD surveys with HST and large ground- based telescopes bring $\sim$10%-accurate distances for roughly a hundred galaxies within 5 Mpc. The new data on distances to galaxies situated in (
openaire   +2 more sources

Out There No One Has a Right to Die

open access: yesBioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Studying the Patterns of the Universe

open access: yesOpen Astronomy, 2011
The SDSS galaxy catalog is one of the best databases for galaxy distribution studies. The SDSS DR8 data is used to construct the galaxy cluster catalog.
Sepp T.   +4 more
doaj   +1 more source

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

open access: yes, 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   +3 more sources

Computers and chess masters: The role of AI in transforming elite human performance

open access: yesBritish Journal of Psychology, EarlyView.
Abstract Advances in Artificial Intelligence (AI) have made significant strides in recent years, often supplementing rather than replacing human performance. The extent of their assistance at the highest levels of human performance remains unclear. We analyse over 11.6 million decisions of elite chess players, a domain commonly used as a testbed for AI
Merim Bilalić, Mario Graf, Nemanja Vaci
wiley   +1 more source

A Census of Compact Elliptical Galaxies in the Coma Cluster

open access: yesThe Astrophysical Journal
Compact elliptical (cE) galaxies are compact stellar systems with stellar masses of 10 ^8 ≤ M _* / M _⊙ ≤ 10 ^10 and radii typically
Aleksandra V. Sharonova   +5 more
doaj   +1 more source

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