نتایج جستجو برای: galaxies structure

تعداد نتایج: 1607913  

2004
Paul Martini

The results of bar-driven mass inflow are directly observable in high-resolution HST observations of their circumnuclear regions. These observations reveal a wealth of structures dominated by dust lanes, often with a spiral-like morphology, and recent star formation. Recent work has shown that some of these structures are correlated with the presence or absence of a bar. I extend this work with...

2003
Alister W. Graham Helmut Jerjen Rafael Guzmán

We report the discovery of spiral-like structure in Hubble Space Telescope images of two dwarf galaxies (GMP 3292 and GMP 3629) belonging to the Coma cluster. GMP 3629 is the faintest such galaxy detected in a cluster environment, and it is the first such galaxy observed in the dense Coma cluster. The large bulge and the faintness of the broad spiral-like pattern in GMP 3629 suggests that its d...

Journal: :journal of sciences, islamic republic of iran 2011
p. davoudifar

cosmic rays (cr) travel at speeds essentially indistinguishable from the speed of light. however whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. fu...

Journal: :Europhysics News 1990

1998
Tom Oosterloo Raffaella Morganti Elaine Sadler

We summarise the HI properties of early-type galaxies, in particular the differences in HI morphologies observed in early-type galaxies of different luminosities. We find that in low-luminosity early-type galaxies the HI is almost always in a disk-like structure, with central surface densities high enough for star formation to occur. In a few luminous early-type galaxies the HI is also in a dis...

1999
Tom Oosterloo Raffaella Morganti Elaine Sadler

We summarize the H i properties of early-type galaxies, in particular the differences in H i morphologies observed in early-type galaxies of different luminosities. We find that in lowluminosity early-type galaxies the H i is almost always in a disk-like structure, with central surface densities high enough for star formation to occur. In a few luminous early-type galaxies the H i is also in a ...

Journal: :Symposium - International Astronomical Union 2004

Journal: :Monthly Notices of the Royal Astronomical Society 2007

Journal: :Symposium - International Astronomical Union 1970

1998
Kenji Bekki

It is a longstanding and remarkable problem when and how red S0 galaxies were formed in clusters of galaxies. We here propose that the major mechanism for the S0 creation is galaxy merging between two spirals with unequal mass. Our numerical simulations demonstrate that galaxy merging exhausts a large amount of interstellar medium of two gas-rich spirals owing to the moderately enhanced star fo...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید