These ultraluminous infrared galaxies ( ULIRGs ) are just in a very active star formation period : they are just in a collision or in a merge with another galaxy.
22.
The smaller galaxy shows distinct signs of active star formation at its nucleus, and " it is thought that the smaller galaxy has actually passed through the larger one ."
23.
Major mergers are frequently sites of active star-formation and to the right a graph is shown that plots specific star formation rate ( SFR / Galaxy Mass ) against galaxy mass.
24.
This is a region of active star formation that contains many younger, spheroid halo of older, population II stars, as well as relatively dense concentrations of stars known as globular clusters.
25.
This suggests that the latter once experienced a great star formation phase, but is now in a relative state of quiescence, whereas the Milky Way is experiencing more active star formation.
26.
GJ 3634, described by its discoverers as an " intermediately active star, " has a luminosity of 0.02, meaning that it releases about 2 % of the energy that the Sun radiates.
27.
Rumors have been rife for years that a number of former and active star athletes _ most of them from baseball _ have failed to report income from the shows and other autograph-signing sessions.
28.
Energy budget calculations indicate that the active star typically should be variable at the ?L / L H " 0.1 level and should be differentially rotating at the ?? / ? H " 0.01 level.
29.
The NBA found room in its 50-man pantheon for nine active stars, including Shaquille O'Neal and Patrick Ewing, surely selected for their impressive collections of league-championship rings and MVP trophies, not for their big-city promotional value.
30.
O-type stars are typically located in regions of active star formation, such as the spiral arms of a spiral galaxy or a pair of galaxies undergoing collision and merger ( such as the Antennae Galaxies ).
