A substellar object, sometimes called a substar, is an astronomical object, the mass of which is smaller than the smallest mass at which hydrogen fusion...

J1407b is a substellar object, likely unbound to any star, with a dusty circumplanetary disk or massive ring system. It was first detected by telescopes...

burning, is a nuclear fusion reaction that occurs in stars and some substellar objects, in which a deuterium nucleus and a proton combine to form a helium-3...

end as dispersed cold particles or some form of compact stellar or substellar object, according to thermodynamics. The stars called white or degenerate...

planet Hot Jupiter Red dwarf Rogue planet Substellar object List of planet types Lists of astronomical objects Working Group on Extrasolar Planets – Definition...

also been applied to hypothetical late-stage cooled brown dwarfs – substellar objects with insufficient mass (less than approximately 0.07 M☉) to maintain...

any white dwarf to have yet cooled to "black". A brown dwarf is a substellar object not massive enough to ever fuse hydrogen into helium, but still massive...

pre-main-sequence star that was eclipsed by the likely free-floating substellar object J1407b in April–June 2007. With an age around 20 million years, the...

Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars. Their...

first case of linking white dwarf pollution with the presence of a substellar object. It is thought that the orbits of planetesimals are being disrupted...

gravitationally bound non-stellar objects in orbit around a star or star system Substellar object – Astronomical object without the mass to sustain fusion...

A Thorne–Żytkow object (TŻO or TZO), also known as a hybrid star, is a conjectured type of star wherein a red giant or red supergiant contains a neutron...

Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionised gas ejected...

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

This article documents the most distant astronomical objects discovered and verified so far, and the time periods in which they were so classified. For...

France; Hauschildt, P. H. (1 September 2001). "Infrared spectroscopy of substellar objects in Orion". Monthly Notices of the Royal Astronomical Society. 326...

Remnants Planetary nebulae Timeline of stellar astronomy Related Substellar object Brown dwarf Desert Sub Planet Galactic year Galaxy Guest Gravity Intergalactic...

to M. Some of these objects have masses large enough to support hydrogen fusion and are therefore stars, but most are of substellar mass and are therefore...

planetary companion with an orbital period of more than 20 years. A substellar object with a minimum mass of 1.6 MJ and orbital separation of roughly 6...

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...

is no hydrostatic equilibrium at or below this limiting temperature. The object would then quickly dissipate, leaving behind the intermediate mass black...

some Bok globules contain embedded warm sources, some contain Herbig–Haro objects, and some show outflows of molecular gas. Millimeter-wave emission line...

"Discovery of a close substellar companion to the hot subdwarf star HD 149382 — the decisive influence of substellar objects on late stellar evolution"...

large mass, relative faintness, and X-ray spectra, a number of massive objects in X-ray binaries are thought to be stellar black holes. These black hole...

Remnants Planetary nebulae Timeline of stellar astronomy Related Substellar object Brown dwarf Desert Sub Planet Galactic year Galaxy Guest Gravity Intergalactic...

planet Any planetary-mass object that orbits a galactic center directly rather than a star or substellar object. Such objects have often been ejected from...

2007 was interpreted as a substellar object with a circumstellar disk or massive rings transiting the star. This substellar object, dubbed "J1407b", is most...

would then make heavy nuclei decay into iron, converting stellar-mass objects to cold spheres of iron. The formation of these stars is only a possibility...

Posselt, B.; Neuhäuser, R.; Haberl, F. (March 2009). "Searching for substellar companions of young isolated neutron stars". Astronomy and Astrophysics...

75-104303.3, and referred to as "The Accident") is a brown dwarf (substellar object), Class Y, the coolest class, visible only in the infrared. It was...