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protostar
ˈprotostar Astr. [f. proto- + star n.1] A contracting mass of gas in which nucleosynthesis has not yet begun, representing an early stage in the formation of a star.1954 H. Alfvén Orig. Solar Syst. xii. 188 This condensation may have taken place from a ‘protostar’ of the type considered by Spitzer a...
Oxford English Dictionary
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ProtoStar
ProtoStar I
The ProtoStar I satellite was built by Space Systems/Loral (SS/L) based on the SS/L 1300 spacecraft design. system for ProtoStar I.
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Protostar
A protostar is a very young star that is still gathering mass from its parent molecular cloud. The actual radiation emanating from a protostar is predicted to be in the infrared and millimeter regimes.
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en.wikipedia.org
Protostar (EP)
Protostar (stylized as PROTOSTAR) is an extended play (EP) marketed as the debut single of Japanese boy group JO1, formed through the reality competition Protostar eventually ranked sixth on Oricon's mid-year chart, and tenth on the Combined Singles Sales category.
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en.wikipedia.org
Protostar: War on the Frontier
Protostar: War on the Frontier is a 1993 science fiction video game produced by Tsunami Media that blends elements of role-playing, space exploration, A sequel, Protostar 2, was planned but never released.
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en.wikipedia.org
PROTOSTAR
《PROTOSTAR》是日本男子组合JO1的出道单曲，于2020年3月4日由发行。
概要
单曲分为附有DVD的初回限定盘A、附有Photo Booklet的初回限定盘B以及通常盘。《无限大》收录于所有版本。
wikipedia.org
zh.wikipedia.org
SES-7
Spacecraft
ProtoStar-2 is a geosynchronous communications satellite built by Boeing. It is a BSS-601HP satellite bus. The satellite was later converted into the ProtoStar-2 satellite, which was launched in May 2009.
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en.wikipedia.org
how long does it take for a protostar to reach its full mass
A protostar is a very young star that is still gathering mass from its parent molecular cloud.
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Protostar (disambiguation)
A protostar is a very young star that is still gathering mass from its parent molecular cloud. Protostar(s) may also refer to:
ProtoStar, a short-lived satellite company (2006–2009)
Protostar (EP), a 2020 EP by JO1
Protostar: War on the Frontier
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en.wikipedia.org
Barnard 203
Towards the east is the source IRS 2E, a source between a pre-stellar core and a protostar. The source IRS 3B was studied the most and ALMA showed that it is a triple protostar system with one star forming via disk fragmentation.
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en.wikipedia.org
太阳是一颗二代恒星，那么一代恒星的残骸核心能找到吗？如果能，它又在哪里？
2.原恒星（Protostar）的出现 前面说的那些小碎片，不要小看它们，这些是恒星的“Precursor”，就是前驱体。 当前驱体温度足够高的时候，内部气体的压力就会对引力坍塌开始反击，伴随着进行的是物质的吸积阶段。 这是一张原恒星（Protostar）爆发的照片： 图片来自 这里说到的原恒星，跟后来再此基础上演化的恒星还是有很大区别，在原恒星里还是只有氢原子而已。不过，这些原恒星的体型巨大，质量超重，有可能是宇宙出现过的最大恒星种类。
zhihu
www.zhihu.com
HOPS 383
HOPS 383 is a Class 0 protostar. It is the first class-0 protostar discovered to have had an outburst, and as of 2020, the youngest protostar known to have had an outburst.
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en.wikipedia.org
HH 111
This source is the driving source of the jets and it is a class I protostar with a luminosity of about 25 . This protostar is embedded in a 30 cloud core. The dynamical age of the complex is only 800 years.
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en.wikipedia.org
W33A
W33A is a protostar located approximately 12,000 light-years away from Earth, in the constellation Sagittarius. References
External links
An Inventory of Interstellar Ices toward the Embedded Protostar W33A, by Gibb, E. L.; Whittet, D. C. B.; Schutte, W.
wikipedia.org
en.wikipedia.org
IRAS 18162−2048
It is associated with a massive (~10 solar masses) protostar, which accretes gas from a disk that surrounds it. This observation was the first of kind demonstrating that a protostar can have a magnetized jet.
wikipedia.org
en.wikipedia.org