Process by which dense regions of molecular clouds in interstellar space collapse to form stars
The W51 nebula in Aquila - one of the largest star factories in the Milky Way (August 25, 2020)
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.[1] As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function. Most stars do not form in isolation but as part of a group of stars referred as star clusters or stellar associations.[2]
^Stahler, S. W. & Palla, F. (2004). The Formation of Stars. Weinheim: Wiley-VCH. ISBN 3-527-40559-3.
^Lada, Charles J.; Lada, Elizabeth A. (2003-09-01). "Embedded Clusters in Molecular Clouds". Annual Review of Astronomy and Astrophysics. 41 (1): 57–115. arXiv:astro-ph/0301540. Bibcode:2003ARA&A..41...57L. doi:10.1146/annurev.astro.41.011802.094844. ISSN 0066-4146. S2CID 16752089.
Starformation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming...
through fusion, they inexorably cool down after their formation. Consequently, a given neutron star reaches a surface temperature of one million degrees...
regions. Such feedback effects, from starformation, may ultimately disrupt the cloud and prevent further starformation. All stars spend the majority of...
clustered nature of starformation by treating star clusters as the fundamental unit of starformation. This approach permits the growth of star particles by...
formation process. The observation of binaries consisting of stars not yet on the main sequence supports the theory that binaries develop during star...
not well known. Thus the formation of planetary systems is thought to be a natural result of starformation. A Sun-like star usually takes approximately...
clusters. Starformation activity in elliptical galaxies is typically minimal; they may, however, undergo brief periods of starformation when merging...
(if starformation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules...
cosmological constant. Absolute time and space Big History Earth science Galaxy formation and evolution Illustris project Jainism and non-creationism Lambda-CDM...
heavy elements, eventually allowing the formation of planets. Hubble eXtreme Deep Field (XDF) Starformation rates in galaxies depend upon their local...
exceptionally high rate of starformation, as compared to the long-term average rate of starformation in the galaxy, or the starformation rate observed in most...
"The StarFormation History of the Local Group". In F. Favata; A. Kaas; A. Wilson (eds.). Proceedings of the 33rd ESLAB symposium on starformation from...
spots. Messier 100 is considered a starburst galaxy with the strongest starformation activity concentrated in its center, within a ring – actually two tightly...
period of enhanced starformation. The present efficiency of starformation, defined as the ratio of mass of new stars to the mass of star-forming gas, is...
sequence" (galaxies that lack starformation). Starformation activity in green valley galaxies is slowing as they run out of star-forming gas in the interstellar...
leading to the disruption of a star cluster. Most young embedded clusters disperse shortly after the end of starformation. The open clusters found in the...
parent star Kepler 452 7.98 billion years (5.82 Gya): Formation of Mira or Omicron ceti, binary star system. Formation of Alpha Centauri Star System,...
sequence" (galaxies that lack starformation). Star-formation activity in green valley galaxies is slowing as they run out of star-forming gas in the interstellar...
were later shown to be very important and were possibly related to starformation, observed kinematics, stellar age, and even galaxy evolution in both...
baryonic physics, gas heating and cooling, starformation and feedback. Understanding the processes of galaxy formation is a major topic of modern cosmology...
center into the galactic disc. The spiral arms are sites of ongoing starformation and are brighter than the surrounding disc because of the young, hot...
small dark nebulae containing dense cosmic dust and gas from which starformation may take place. Bok globules are found within H II regions, and typically...
for the formation of all young, nearby stars. These new stars are typically in molecular clouds like the Taurus molecular cloud and the open star cluster...
Nebulae are often star-forming regions, such as in the "Pillars of Creation" in the Eagle Nebula. In these regions, the formations of gas, dust, and other...
Although it is well known that magnetic fields play an important role in starformation, research models indicate that Hall diffusion critically influences...
have been found only in spiral and irregular galaxies, in which active starformation is occurring. Young open clusters may be contained within the molecular...
of authors. The galaxy is low in dust and gas, and there is little starformation in it, although there has been some relatively recently in the arms...
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