CHE SIGNIFICA MOLECULAR CLOUD IN INGLESE
Nube molecolare
Una nuvola molecolare, talvolta chiamata vivaio stellare, è un tipo di nube interstellare la cui densità e dimensione consentono la formazione di molecole, più comunemente l'idrogeno molecolare. Ciò è in contrasto con altre aree del mezzo interstellare che contengono gas prevalentemente ionizzato. L'idrogeno molecolare è difficile da rilevare mediante osservazioni a raggi infrarossi e radio, quindi la molecola più comunemente utilizzata per determinare la presenza di H2 è CO.Il rapporto tra luminosità CO e massa di H2 si pensa sia costante, anche se ci sono ragioni per dubitare di questa assunzione in Osservazioni di alcune altre galassie.
definizione di molecular cloud nel dizionario inglese
La definizione di nube molecolare nel dizionario è una fredda regione interstellare densa composta da un'ampia varietà di molecole, principalmente idrogeno, più un po 'di polvere, in cui si formano le stelle.
PAROLE IN INGLESE ASSOCIATE CON «MOLECULAR CLOUD»
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10 LIBRI IN INGLESE ASSOCIATI CON «MOLECULAR CLOUD»
Scopri l'uso di
molecular cloud nella seguente selezione bibliografica. Libri associati con
molecular cloud e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Dynamics of Galaxies and Their
Molecular Cloud Distributions
Proceedings of the 146th Symposium of the International Astronomical Union, held in Paris, France, June 4-9, 1990
F. Combes, F. Casoli,
1991
2
Earth: Evolution of a Habitable World
The largest of these gaseous and dusty regions, giant molecular clouds, contain
enough gas to make 100,000 stars each the mass of the Sun. The closest major
molecular cloud, the Orion molecular cloud, is some 1500 light-years from Earth.
When a marginally stable molecular cloud passes through a spiral arm of a
galaxy it is compressed; such compression may be sufficient to trigger collapse.
Clouds pass through spiral arms since the clouds and stars in a galaxy orbit
faster ...
Imke de Pater, Jack J. Lissauer,
2010
4
Dinosaurs, Diamonds, and Things from Outer Space: The Great ...
Of course, any giant molecular cloud that is at the same distance as the sun from
the center of the galaxy is also orbiting around the center at the same speed.
Thus it is possible that the sun could be passing through the same giant
molecular ...
David Brez Carlisle,
1995
5
Fourier Transform Spectroscopy of the Orion
Molecular Cloud
The Orion Molecular Cloud (OMC) is the nearest, and thus most studied, star forming region to the Earth.
Margaret Katharine Tahic,
2005
Most of the emission in both these arms is apparently concentrated in the largest
concentrations, such as the giant molecular cloud (GMC) at i = 111°, associated
with the CasA supernova remnant at 3 kpc; the sprinkling of clouds in the upper ...
R. A. James, T. J. Millar,
1991
7
Astronomy: A Physical Perspective
We would also ** *** Younger Subgroup * Older Subgroup Molecular Cloud OB
associations and molecular clouds. These associations often have a few
subgroups. The older subgroups are more extended, since the associations are
unbound ...
8
Encyclopedia of the Solar System
It is unclear precisely what causes the densest portions of a molecular cloud (
called molecular cloud cores) to collapse to form stars. It may be that contraction
of a cloud core is inevitable sooner or later due to the core's own gravity, or an ...
Lucy-Ann McFadden, Torrence Johnson, Paul Weissman,
2006
9
Encyclopedia of Chemical Physics and Physical Chemistry: ...
Newly discovered entities such as diffuse interstellar clouds, dense (or dark)
molecular clouds and giant molecular cloud complexes were characterized for
the first time. Indeed, radioastronomy (which includes observations ranging ...
Nicholas D. Spencer, John H. Moore,
2001
10
Accretion Processes in Star Formation
Observations indicate that most molecular cloud cores in Taurus have roughly
the same temperature (e.g., Cernicharo 1991). The cloud temperature depends
upon the balance of heating and cooling processes; for typical physical
conditions ...
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «MOLECULAR CLOUD»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
molecular cloud nel contesto delle seguenti notizie.
The starry origins of life's left-handedness: experiments on nature's …
... 12 K. That's good to know, because it happens to be right around the range expected for your generic primordial interstellar molecular cloud. «ExtremeTech, lug 15»
Vesta's Potassium-to-Thorium Ratio Reveals Hot Origins
The solar system originated from a molecular cloud that collapsed to form the Sun and a rotating disk of gas and dust from which the planets ... «Space Ref, lug 15»
2015 Insight Astronomy Photographer of the Year Contest
Roseta-NBv5 (Spain)
Measuring 50 light years in diameter, the large, round Rosette Nebula is found on the edge of a molecular cloud in the constellation of ... «ABC News, lug 15»
16 of the most jaw-dropping space photos of the year
Measuring 50 light years in diameter, the large, round Rosette Nebula is found on the edge of a molecular cloud in the constellation of ... «Mashable, lug 15»
Seeking Earth-like planets with the James Webb Space Telescope
Planetary Formation Animation: Deep within the cold, turbulent cocoon of a molecular cloud teem numerous stars in the earliest phases of ... «Phys.Org, lug 15»
Hot young stars at the edge of the Milky Way
Like many open clusters, NGC 2367 is embedded within an emission nebula, the molecular cloud from which its stars were born. The cloud's ... «ABC Science Online, lug 15»
Notes from the Editors: Highlights from DAMOP 2015
The researchers studied reactions that produce CH , CH , OH , and H O and covered the range of molecular cloud temperatures 10–300 kelvin. «Physics, lug 15»
Stars forming in the Taurus Molecular Cloud
Launched in 2009, Herschel studied the sky at far-infrared wavelengths for almost four years, detecting the glow of cosmic dust in the ... «Scientific Computing, giu 15»
Some days the universe seems to give you the finger
The feature in the photo, taken by the Hubble Space Telescope in 1999, shows what is known as a molecular cloud, composed of dust and gas, ... «Straight.com, mag 15»
Image: Star formation and magnetic turbulence in the Orion …
The red clumps at the centre of the image are part of the Orion Molecular Cloud Complex, one of the closest large regions of star formation, only ... «Phys.Org, mag 15»