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4 days ago · A time-lapse video, assembled from images collected over two decades by the Chandra X-ray Observatory, shows the Crab Nebula, a supernova explosion first observed in 1054. NASA/CXC/SAO; Image ...
- 15 sec
- Dennis Overbye
After the supernova explosion, the life of a massive star comes to an end. But the death of each massive star is an important event in the history of its galaxy. The elements built up by fusion during the star’s life are now “recycled” into space by the explosion, making them available to enrich the gas and dust that form new stars and ...
Apr 10, 2020 · More than 100,000 times the mass of the Sun, the Brick doesn’t seem to be forming any massive stars—yet. But based on its immense mass in such a small area, if it does form stars—as scientists think it should—it would be one of the most massive star clusters in the Milky Way galaxy.
- How Big?
- Evolution: How Important Are Luminous Blue Variable Giant eruptions?
- Supergiant H II Regions
- Explosive Transients: Superluminous Supernovae
- Long GRBs from Metal-Rich Hosts
- Concluding Remarks
The Orion A giant molecular cloud represents our nearest massive star-forming region, for which the Orion Nebula Cluster (ONC) beautifully illustrates some of the characteristics of high-mass stars. Massive stars form predominantly in clusters, although details about their formation process remains scarce since they are rare, form quickly, and are ...
Historically, theoretical isochrones for high-mass stars involved a single parameter: metallicity. However, over the past decade, rotation has been recognized as another key parameter for massive stars, while the presence of a close companion dramatically influences the evolution of both components (e.g. de Mink et al. 2009). It is well known that ...
There are several tracers of the rate of star formation in galaxies, each involving massive stars either directly (far-ultraviolet continuum luminosities, ccSNe rates) or indirectly (gas ionized from hot, luminous stars or dust heated by their UV radiation). Of these, Ha luminosities measured from H ii regions are most widely used (Kennicutt 1998)....
As set out in the introduction, massive stars or their progeny are responsible for the majority of extragalactic transient explosions, the most common examples of which are core-collapse supernovae (ccSNe). Among other things, ccSNe are responsible for the majority of alpha elements in galaxies. Hydrogen-rich, or type II, ccSNe are subdivided into ...
Long duration GRBs are intimately related to the death of (certain) massive stars. They have long been recognized as being restricted to star-forming galaxies, but the association was proven by the discovery that nearby, low-redshift long GRBs are accompanied by a (type Ic-BL) core-collapse supernova. The first example observed was GRB 980425 / SN ...
Massive stars are cosmic engines, responsible for much of the ionized gas and alpha elements in normal galaxies, stellar explosions including core-collapse supernovae and long gamma-ray bursts, and exotica, such as neutron stars and stellar-mass black holes. Advances over the past decade include establishing: 1. •the progenitors of Type II-P ccSNe;...
- Paul Crowther
- 2012
This is a list of the most massive stars that have been discovered, in solar mass units (M ☉).
Massive stars begin as large hydrogen clouds that condense under gravity. They burn hotter and faster than smaller stars, undergoing fusion to create heavier elements. This fusion process continues until iron is formed.
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How do high-mass stars form?
The most massive stars that exist today may be completely destroyed by a supernova with an energy greatly exceeding its gravitational binding energy. This rare event, caused by pair-instability, leaves behind no black hole remnant.
