protostar


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Related to protostar: red giant, Life cycle of a star

pro·to·star

 (prō′tə-stär′)
n.
A celestial object in a late stage of star formation in which the central condensation resulting from the collapse of a dense, interstellar cloud core has become a sphere that is opaque so that it has a luminous surface like a star, but has yet to sustain nuclear fusion of hydrogen in its core.

protostar

(ˈprəʊtəʊˌstɑː)
n
(Astronomy) a cloud of interstellar gas and dust that gradually collapses, forming a hot dense core, and evolves into a star once nuclear fusion can occur in the core
References in periodicals archive ?
An international effort lead by UCD PhD student Ruben Fedriani Lopez has recorded the total mass and energy from a jet driven by a high-mass protostar.
Using ALMA, they found that the slow outflow and the high speed jet from a protostar have misaligned axes and that the former started to be ejected earlier than the latter.
Gravity causes the protostar to shrink, and the gravitational energy lost by the inflowing matter turns into heat, causing the centre of the globule to become very hot.
According to clinicaltrials.gov, the trial, PROTOSTAR, is expected to enroll approximately 125 children between 6 and 18 years of age with plaque psoriasis and will evaluate the efficacy, safety and pharmacokinetics of guselkumab against etanercept and placebo.
As gas in the galaxy collapses, heat generated creates the core of a protostar.
Aside from country flags, the patch also comes with Monstercat Flags that include Anna Yvette, Intercom, Koven, Pegboard Nerds, Protostar, Slippy, Stonebank, Uncaged and Uncaged Cat.
Titius-Bode and the helicity connection: a quantized field theory of protostar formation.
In fact, very recently the ALMA Long Baseline Campaign has presented submillimeter images of the disk around HL Tau, an object transitioning from a protostar to a T Tauri star at a distance of 140 pc, and detected multiple gap and ring structures with a resolution of 90.03" or 4 AU.
Among specific topics are the chemical classification of nearby active galaxies, the chemical variation in the Orion A cloud cores, highlighting the dynamical interaction between planets and planetesimal belts with ALMA, and Keplarian and infall motions around the late-phase protostar TMC-1A.
Owned by Protostar Partners LLC, New York, and formerly known as Buckeye Steel Castings Co., Columbus Castings will add approximately 50 full-time metalcasting jobs to its current 650-employee workforce as a result of the recent Nippon Sharyo deal.
Stars, too, adjust their internal states while evolving during one or more generations, with their [[PHI].sub.m] values rising while complexifying with time as their interior thermal and chemical gradients steepen and differentiate; for the Sun, [[PHI].sub.m] increases from ~1 to [10.sup.2] erg/s/g while changing from a young protostar to an aged red giant.