Young stellar object (YSO) denotes a star in its early stage of evolution. This class consists of two groups of objects: protostars and pre-main-sequence...

constant. Substellar objects like brown dwarfs do not have enough mass to fuse hydrogen and helium, hence do not undergo the usual stellar evolution that limits...

3847/0004-6256/152/6/186. S2CID 58923690. 186. Zealey, W. J. (1992). "Young Stellar Objects and Herbig–Haro Objects". Australian Journal of Physics. 45 (4): 487–499. Bibcode:1992AuJPh...

state and type of a stellar remnant depends primarily on the mass of the star that it formed from. The ambiguous term compact object is often used when...

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...

protostar is a very young star that is still gathering mass from its parent molecular cloud. It is the earliest phase in the process of stellar evolution. For...

gravitational interactions during close encounters with other stars in young stellar clusters. These interactions tend to split apart more widely separated...

A stellar collision is the coming together of two stars caused by stellar dynamics within a star cluster, or by the orbital decay of a binary star due...

binary star systems. In various stages of their life, they are called young stellar object (YSOs). It is thought that the active magnetic fields and strong...

In astrophysics, stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars. Stellar nucleosynthesis has occurred...

1944, Walter Baade categorized groups of stars within the Milky Way into stellar populations. In the abstract of the article by Baade, he recognizes that...

1086/181126. Chrysostomou, Antonio; et al. (2000). "Polarimetry of young stellar objects - III. Circular polarimetry of OMC-1". MNRAS. 312 (1): 103–115....

continues, the envelope eventually becomes thin and transparent and the young stellar object (YSO) becomes observable, initially in far-infrared light and later...

sites of planet formation. Protoplanetary disk Protostar Stellar evolution Young stellar object Richard B. Larson (10 September 2003). "The physics of star...

word "dwarf" was later extended to some star-sized objects that are not stars, and compact stellar remnants that are no longer stars. The term was originally...

with planets. Notable neutron stars, black holes, and other exotic stellar objects/remnants. Note that these lists are currently unfinished, and there...

OB-association of young stars, called the Vulpecula OB-association or Vul OB1. The association contains nearly 100 OB-stars and over 800 young stellar objects. It lies...

A molecular cloud—sometimes called a stellar nursery if star formation is occurring within—is a type of interstellar cloud of which the density and size...

An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists...

A stellar wind is a flow of gas ejected from the upper atmosphere of a star. It is distinguished from the bipolar outflows characteristic of young stars...

Lin; Clemens, Dan P. (January 1992). "Discovery of outflows from young stellar objects in BOK globules". Astrophysical Journal Letters. 385: L21. Bibcode:1992ApJ...

well-studied. The source IRS 2 is a binary that is very young (class 0 young stellar object), surrounded by a rotating disk and the system shows a bipolar...

continues, the envelope eventually becomes thin and transparent and the young stellar object (YSO) becomes observable, initially in far-infrared light and later...

dwarfs, and white dwarfs which are much more common, the latter being stellar remnants). A G-type main-sequence star with the mass of the Sun will fuse...

head of the cloud and is about 0.75 ly long. The jet's source is a young stellar object deep within the cloud. Jets are the exhaust gasses of star formation...

A dark-energy star is a hypothetical compact astrophysical object, which a minority of physicists think might constitute an alternative explanation for...

IM Lupi is a young stellar object with a surrounding protoplanetary disk. The young star is suspected to host a still forming protoplanet at a distance...

In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space. Stellar kinematics encompasses...

continue to generate large amount of radiant energy from the infall of stellar material. This constant outburst of energy would counteract the force of...

that affect developing planetary systems. Several special types of young stellar object have been identified in RCW 36, and are described in more detail...