... The HDF may be heralded as a milestone in years to come, and the book amply records the moment, but it is disconcerting that some astronomers, apparently unexpectedly, hit so much trouble with merginggalaxies and blended images. ...
... Intro duction Stars do not form individually but in groups, with sizes ranging from small star forming regions (SFRs) to the massive superstar clusters seen in merginggalaxies (Lada & Lada 2003). ...
... Following orbital decay by gravitational-wave radiation, such binaries are expected to merge at a rate of two or three per thousand years per galaxy. ...
... Black holes are found at the centres of galaxies which are similar in size to our own Milky Way Galaxy or larger. ... When black holes collide and merge they form supermassive black holes which are events among the most powerful in the universe. ...
... In the Galaxy as a whole, our model predicts the current birth rate of DWDs to be 3.21 †Ч 10тИТ2 yrтИТ1, the local density to ... Assuming SNIa are formed from the merger of two CO white dwarfs, the SNIa rate should be 0.0013 yrтИТ1. ...
... Ia supernovae from double degenerate mergers channel in different star formation ... DD) population in the thin disc of the Galaxy, which we assume to have formed 10 Gyr ...
... The merger frequency of double HeWD systems in the Galaxy is theoretically estimated ... merger frequency, we obtain 4 10 2 10 3 for the number of the low-luminosity ...
... merger of two white dwarfs; a process that should become increasingly common as the ... The merger frequency of double HeWD systems in the Galaxy is theoret- ically ... Galaxy, which is surprisingly consistent with the number predicted from the merged ...