Globular Cluster Formation in Galaxy Mergers
نویسندگان
چکیده
منابع مشابه
High-resolution simulations of galaxy mergers: Resolving globular cluster formation
Massive star clusters observed in galaxy mergers are often suggested to be progenitors of globular clusters. To study this hypothesis, we performed the highest resolution simulation of a gas-rich galaxy merger so far. The formation of massive star clusters of 10 to 10 M⊙, triggered by the galaxy interaction, is directly resolved in this model. We show that these clusters are tightly bound struc...
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Mergers of gas-rich galaxies lead to gravitationally driven increases in gas pressure that can trigger intense bursts of star and cluster formation. Although star formation itself is clustered, most newborn stellar aggregates are unbound associations and disperse. Gravitationally bound star clusters that survive for at least 10–20 internal crossing times (∼20–40 Myr) are relatively rare and see...
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Our numerical simulations first demonstrate that the pressure of ISM in a major merger becomes so high (> 105 kB K cm−3) that GMCs in the merger can collapse to form globular clusters (GCs) within a few Myr. The star formation efficiency within a GMC in galaxy mergers can rise up from a few percent to ∼ 80 percent, depending on the shapes and the temperature of the GMC. This implosive GC format...
متن کاملFormation of Globular Clusters in Galaxy Mergers
We present a high-resolution simulation of globular cluster formation in a galaxy merger. For the first time in such a simulation, individual star clusters are directly identified and followed on their orbits. We quantitatively compare star formation in the merger to that in the unperturbed galaxies. The merging galaxies show a strong starburst, in sharp contrast to their isolated progenitors. ...
متن کاملDamp Mergers: Recent Gaseous Mergers without Significant Globular Cluster Formation?
Here we test the idea that new globular clusters (GCs) are formed in the same gaseous (“wet”) mergers or interactions that give rise to the young stellar populations seen in the central regions of many early-type galaxies. We compare mean GC colors with the age of the central galaxy starburst. The red GC subpopulation reveals remarkably constant mean colors independent of galaxy age. A scenario...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 2005
ISSN: 1539-2996
DOI: 10.1017/s1539299600015719