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- Atomic_and_molecular_astrophysics abstract "Atomic astrophysics is concerned with performing atomic physics calculations that will be useful to astronomers and using atomic data to interpret astronomical observations. Atomic physics plays a key role in astrophysics as astronomers' only information about a particular object comes through the light that it emits, and this light arises through atomic transitions.Molecular astrophysics, developed into a rigorous field of investigation by theoretical astrochemist Alexander Dalgarno beginning in 1967, concerns the study of emission from molecules in space. There are 110 currently known interstellar molecules. These molecules have large numbers of observable transitions. Lines may also be observed in absorption—for example the highly redshifted lines seen against the gravitationally lensed quasar PKS1830-211. High energy radiation, such as ultraviolet light, can break the molecular bonds which hold atoms in molecules. In general then, molecules are found in cool astrophysical environments. The most massive objects in our galaxy are giant clouds of molecules and dust known as giant molecular clouds. In these clouds, and smaller versions of them, stars and planets are formed. One of the primary fields of study of molecular astrophysics is star and planet formation. Molecules may be found in many environments, however, from stellar atmospheres to those of planetary satellites. Most of these locations are relatively cool, and molecular emission is most easily studied via photons emitted when the molecules make transitions between low rotational energy states. One molecule, composed of the abundant carbon and oxygen atoms, and very stable against dissociation into atoms, is carbon monoxide (CO). The wavelength of the photon emitted when the CO molecule falls from its lowest excited state to its zero energy, or ground, state is 2.6mm, or 115 gigahertz. This frequency is a thousand times higher than typical FM radio frequencies. At these high frequencies, molecules in the Earth's atmosphere can block transmissions from space, and telescopes must be located in dry (water is an important atmospheric blocker), high sites. Radio telescopes must have very accurate surfaces to produce high fidelity images.On February 21, 2014, NASA announced a greatly upgraded database for tracking polycyclic aromatic hydrocarbons (PAHs) in the universe. According to scientists, more than 20% of the carbon in the universe may be associated with PAHs, possible starting materials for the formation of life. PAHs seem to have been formed shortly after the Big Bang, are widespread throughout the universe, and are associated with new stars and exoplanets.".
- Atomic_and_molecular_astrophysics thumbnail Molecular.cloud.arp.750pix.jpg?width=300.
- Atomic_and_molecular_astrophysics wikiPageExternalLink pahdb.
- Atomic_and_molecular_astrophysics wikiPageExternalLink 9780521017275_frontmatter.pdf.
- Atomic_and_molecular_astrophysics wikiPageExternalLink astrophysics.html.
- Atomic_and_molecular_astrophysics wikiPageID "5926889".
- Atomic_and_molecular_astrophysics wikiPageLength "4688".
- Atomic_and_molecular_astrophysics wikiPageOutDegree "44".
- Atomic_and_molecular_astrophysics wikiPageRevisionID "694388773".
- Atomic_and_molecular_astrophysics wikiPageWikiLink Abiogenesis.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Absorption_(electromagnetic_radiation).
- Atomic_and_molecular_astrophysics wikiPageWikiLink Alexander_Dalgarno.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Astrochemistry.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Astronomer.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Astronomical_object.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Astrophysics.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Atomic,_molecular,_and_optical_physics.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Atomic_physics.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Big_Bang.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Carbon.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Carbon_monoxide.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Category:Astrochemistry.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Category:Astronomical_sub-disciplines.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Category:Atomic_physics.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Cosmochemistry.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Emission_spectrum.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Exoplanet.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Hertz.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Interstellar_medium.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Life.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Milky_Way.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Molecular_cloud.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Molecular_modelling.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Molecule.
- Atomic_and_molecular_astrophysics wikiPageWikiLink NASA.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Nebular_hypothesis.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Observational_astronomy.
- Atomic_and_molecular_astrophysics wikiPageWikiLink PAH_world_hypothesis.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Photon.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Polycyclic_aromatic_hydrocarbon.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Quantum_dynamics.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Redshift.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Selection_rule.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Spectral_line.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Spectroscopy.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Star_formation.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Ultraviolet.
- Atomic_and_molecular_astrophysics wikiPageWikiLink Universe.
- Atomic_and_molecular_astrophysics wikiPageWikiLink File:Molecular.cloud.arp.750pix.jpg.
- Atomic_and_molecular_astrophysics wikiPageWikiLinkText "Atomic and molecular astrophysics".
- Atomic_and_molecular_astrophysics wikiPageWikiLinkText "Molecular astrophysics".
- Atomic_and_molecular_astrophysics wikiPageWikiLinkText "atomic and molecular astrophysics".
- Atomic_and_molecular_astrophysics wikiPageUsesTemplate Template:Div_col.
- Atomic_and_molecular_astrophysics wikiPageUsesTemplate Template:Div_col_end.
- Atomic_and_molecular_astrophysics wikiPageUsesTemplate Template:Molecules_detected_in_outer_space.
- Atomic_and_molecular_astrophysics wikiPageUsesTemplate Template:Reflist.
- Atomic_and_molecular_astrophysics subject Category:Astrochemistry.
- Atomic_and_molecular_astrophysics subject Category:Astronomical_sub-disciplines.
- Atomic_and_molecular_astrophysics subject Category:Atomic_physics.
- Atomic_and_molecular_astrophysics type Mechanic.
- Atomic_and_molecular_astrophysics type Physic.
- Atomic_and_molecular_astrophysics type Redirect.
- Atomic_and_molecular_astrophysics type Sub-discipline.
- Atomic_and_molecular_astrophysics type Subfield.
- Atomic_and_molecular_astrophysics comment "Atomic astrophysics is concerned with performing atomic physics calculations that will be useful to astronomers and using atomic data to interpret astronomical observations.".
- Atomic_and_molecular_astrophysics label "Atomic and molecular astrophysics".
- Atomic_and_molecular_astrophysics sameAs Q4117675.
- Atomic_and_molecular_astrophysics sameAs الفيزياء_الفلكية_الذرية_والجزيئية.
- Atomic_and_molecular_astrophysics sameAs Atòmica_i_astrofísica_molecular.
- Atomic_and_molecular_astrophysics sameAs اخترفیزیک_اتمی_و_مولکولی.
- Atomic_and_molecular_astrophysics sameAs m.0fdxt6.
- Atomic_and_molecular_astrophysics sameAs Q4117675.
- Atomic_and_molecular_astrophysics wasDerivedFrom Atomic_and_molecular_astrophysics?oldid=694388773.
- Atomic_and_molecular_astrophysics depiction Molecular.cloud.arp.750pix.jpg.
- Atomic_and_molecular_astrophysics isPrimaryTopicOf Atomic_and_molecular_astrophysics.