Results 11 to 20 of about 25,554 (268)

Targeted decrease of portal hepatic pressure gradient improves ascites control after TIPS

open access: yesHepatology, EarlyView., 2022
The river diagram demonstrates that after transjugular intrahepatic portosystemic shunt insertion (TIPS) the majority of patients without ascites and 50% of the patients with ascites detectable at ultrasound, show the best response in the long term follow‐up.
Alexander Queck   +14 more
wiley   +1 more source

Early assembly of the most massive galaxies [PDF]

open access: yes, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins   +53 more
core   +1 more source

Star Formation and the Galaxy [PDF]

open access: yesSymposium - International Astronomical Union, 1977
My task is to discuss the galactic context of star formation and to consider how large-scale phenomena in the Galaxy can influence the processes of star formation. This review, and the whole of the first session, are supposed to set the stage for the later consideration of protostellar and prestellar objects and smaller-scale effects in general.
openaire   +1 more source

STAR FORMATION AND SUBSTRUCTURE IN GALAXY CLUSTERS [PDF]

open access: yesThe Astrophysical Journal, 2014
We investigate the relationship between star formation (SF) and substructure in a sample of 107 nearby galaxy clusters using data from the Sloan Digital Sky Survey (SDSS). Several past studies of individual galaxy clusters have suggested that cluster mergers enhance cluster SF, while others find no such relationship.
Cohen, Seth A.   +4 more
openaire   +2 more sources

Galaxy And Mass Assembly (GAMA) : testing galaxy formation models through the most massive galaxies in the Universe [PDF]

open access: yes, 2014
We have analysed the growth of Brightest Group Galaxies and Brightest Cluster Galaxies (BGGs/BCGs) over the last 3 billion years using a large sample of 883 galaxies from the Galaxy And Mass Assembly survey. By comparing the stellar mass of BGGs and BCGs
Loveday, J   +70 more
core   +1 more source

GRB Host Galaxies: An Unbiased Sample [PDF]

open access: yes, 2011
We describe the current status and recent results from our Swift/VLT legacy survey, a VLT Large Programme aimed at characterizing the host galaxies of a homogeneously selected sub-sample of Swift GRBs.
Milvang-Jensen, Bo   +6 more
core   +1 more source

Star Formation in the Galaxy [PDF]

open access: yesAustralian Journal of Physics, 1992
Star formation in the Galaxy occurs on different spatial scales from single star formation events in Bok Globules to the formation of OB associations and star clusters. We review recent observations of Bok Globules and relate them to the dense NH3 cores observed in dark clouds.
openaire   +1 more source

The History of Star Formation in Galaxies

open access: yes, 2009
If we are to develop a comprehensive and predictive theory of galaxy formation and evolution, it is essential that we obtain an accurate assessment of how and when galaxies assemble their stellar populations, and how this assembly varies with environment.
Brown, T, Postman, M, Calzetti, D
openaire   +4 more sources

On star formation rates in dwarf galaxies [PDF]

open access: yesAstronomy & Astrophysics, 2001
We present evolutionary synthesis models of starbursts on top of old stellar populations to investigate in detailed time evolution the relation between Ha luminosity and star formation rate (SFR). The models show that several effects have an impact on the ratio between L(Ha) and SFR. Metallicity different from solar abundance, a time delay between star
Weilbacher, Peter M.   +1 more
openaire   +3 more sources

The gas–star formation cycle in nearby star-forming galaxies - II. Resolved distributions of CO and Hα emission for 49 PHANGS galaxies [PDF]

open access: yes, 2022
The relative distribution of molecular gas and star formation in galaxies gives insight into the physical processes and timescales of the cycle between gas and stars. In this work, we track the relative spatial configuration of CO and Hα emission at high
Tomičić, Neven   +122 more
core   +1 more source

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