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98 relations: Abundance of the chemical elements, Academic conference, Accretion disk, Angular momentum, Annual Review of Astronomy and Astrophysics, Arizona, Astronomical spectroscopy, Astronomical unit, Astronomy & Astrophysics, Astrophysical jet, Astrophysics (journal), Australian Journal of Physics, Binary star, Bok globule, Calcium, Cambridge University Press, Carbon dioxide, Carbon monoxide, Chemical element, Collimated light, Dark nebula, Doppler effect, Dry ice, Electromagnetic spectrum, Emission nebula, Emission spectrum, European Space Agency, George Herbig, Gravitational collapse, Gravitational energy, Gravity, Guillermo Haro, H II region, Helium, HH 34, HH 46/47, Hubble Space Telescope, Hydride, Hydrogen, Hydrostatic equilibrium, Ice, Infrared, International Astronomical Union, Interstellar cloud, Interstellar medium, Ionization, Iron, Jet Propulsion Laboratory, Kelvin, Lick Observatory, ..., Light, Magnesium, Main sequence, Methane, Methanol, Milky Way, Monthly Notices of the Royal Astronomical Society, Nebula, Nitrogen, Nuclear fusion, Opacity (optics), Optical resolution, Orion Nebula, Oxygen, Parsec, Pearson Education, Planetary nebula, Plasma (physics), Precession, Proper motion, Protoplanetary disk, Protostar, Radiation, Radio, Reflection nebula, Refracting telescope, Research in Astronomy and Astrophysics, Rotation around a fixed axis, Sherburne Wesley Burnham, Shock wave, Silicate, Solar mass, Soviet Union, Spectral line, Spitzer Space Telescope, Springer Science+Business Media, Star, Star formation, Stellar magnetic field, Sulfur, T Tauri, T Tauri star, The Astronomical Journal, The Astrophysical Journal, Tucson, Arizona, University of Arizona Press, Victor Ambartsumian, Water. Expand index (48 more) »
Abundance of the chemical elements
The abundance of the chemical elements is a measure of the occurrence of the chemical elements relative to all other elements in a given environment.
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Academic conference
An academic conference or symposium is a conference for researchers (not necessarily academics) to present and discuss their work.
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Accretion disk
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
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Angular momentum
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.
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Annual Review of Astronomy and Astrophysics
The Annual Review of Astronomy and Astrophysics is an annual peer reviewed scientific journal published by Annual Reviews.
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Arizona
Arizona (Hoozdo Hahoodzo; Alĭ ṣonak) is a U.S. state in the southwestern region of the United States.
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Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.
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Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
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Astronomy & Astrophysics
Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.
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Astrophysical jet
An astrophysical jet is an astronomical phenomenon where outflows of ionised matter are emitted as an extended beam along the axis of rotation.
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Astrophysics (journal)
Astrophysics is a peer-reviewed scientific journal of astrophysics published by Springer.
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Australian Journal of Physics
The Australian Journal of Physics was a peer-reviewed scientific journal published by the Commonwealth Scientific and Industrial Research Organisation in Australia.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Bok globule
In astronomy, Bok globules are isolated and relatively small dark nebulae, containing dense cosmic dust and gas from which star formation may take place.
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Calcium
Calcium is a chemical element with symbol Ca and atomic number 20.
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Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
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Carbon dioxide
Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.
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Carbon monoxide
Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.
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Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
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Collimated light
Collimated light is light whose rays are parallel, and therefore will spread minimally as it propagates.
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Dark nebula
A dark nebula or absorption nebula is a type of interstellar cloud that is so dense that it obscures the light from objects behind it, such as background stars and emission or reflection nebulae.
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Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
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Dry ice
Dry ice, sometimes referred to as "cardice" (chiefly by British chemists), is the solid form of carbon dioxide.
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Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
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Emission nebula
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths.
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Emission spectrum
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
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European Space Agency
The European Space Agency (ESA; Agence spatiale européenne, ASE; Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space.
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George Herbig
George Howard Herbig (January 2, 1920 – October 12, 2013) was an American astronomer at the University of Hawaii Institute for Astronomy.
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Gravitational collapse
Gravitational collapse is the contraction of an astronomical object due to the influence of its own gravity, which tends to draw matter inward toward the center of gravity.
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Gravitational energy
Gravitational energy is the potential energy a body with mass has in relation to another massive object due to gravity.
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Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
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Guillermo Haro
Guillermo Haro Barraza (21 March 1913 – 26 April 1988) was a Mexican astronomer.
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H II region
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.
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Helium
Helium (from lit) is a chemical element with symbol He and atomic number 2.
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HH 34
HH 34 is a Herbig–Haro object located in Orion Nebula at a distance of about 460 parsecs (1500 light-years).
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HH 46/47
HH 46/47 is a complex of Herbig-Haro objects (HH objects), located around 450 parsecs (about 1,470 light-years) away in a Bok globule near the Gum nebula.
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Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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Hydride
In chemistry, a hydride is the anion of hydrogen, H−, or, more commonly, it is a compound in which one or more hydrogen centres have nucleophilic, reducing, or basic properties.
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Hydrostatic equilibrium
In fluid mechanics, a fluid is said to be in hydrostatic equilibrium or hydrostatic balance when it is at rest, or when the flow velocity at each point is constant over time.
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Ice
Ice is water frozen into a solid state.
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Infrared
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
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International Astronomical Union
The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
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Interstellar cloud
An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies.
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Interstellar medium
In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.
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Ionization
Ionization or ionisation, is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.
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Iron
Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.
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Jet Propulsion Laboratory
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.
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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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Lick Observatory
The Lick Observatory is an astronomical observatory, owned and operated by the University of California.
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Light
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
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Magnesium
Magnesium is a chemical element with symbol Mg and atomic number 12.
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Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
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Methane
Methane is a chemical compound with the chemical formula (one atom of carbon and four atoms of hydrogen).
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Methanol
Methanol, also known as methyl alcohol among others, is a chemical with the formula CH3OH (a methyl group linked to a hydroxyl group, often abbreviated MeOH).
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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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Nebula
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
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Nitrogen
Nitrogen is a chemical element with symbol N and atomic number 7.
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Nuclear fusion
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
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Opacity (optics)
Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light.
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Optical resolution
Optical resolution describes the ability of an imaging system to resolve detail in the object that is being imaged.
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Orion Nebula
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion.
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
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Pearson Education
Pearson Education (see also Pearson PLC) is a British-owned education publishing and assessment service to schools and corporations, as well as directly to students.
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Planetary nebula
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
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Plasma (physics)
Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.
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Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
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Proper motion
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
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Protoplanetary disk
A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star.
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Protostar
A protostar is a very young star that is still gathering mass from its parent molecular cloud.
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Radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
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Radio
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
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Reflection nebula
In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars.
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Refracting telescope
A refracting telescope (also called a refractor) is a type of optical telescope that uses a lens as its objective to form an image (also referred to a dioptric telescope).
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Research in Astronomy and Astrophysics
Research in Astronomy and Astrophysics is a monthly peer-reviewed scientific journal covering all branches of astronomy and astrophysics.
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Rotation around a fixed axis
Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a special case of rotational motion.
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Sherburne Wesley Burnham
Sherburne Wesley Burnham (December 12, 1838 – March 11, 1921) was an American astronomer.
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Shock wave
In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance.
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Silicate
In chemistry, a silicate is any member of a family of anions consisting of silicon and oxygen, usually with the general formula, where 0 ≤ x Silicate anions are often large polymeric molecules with an extense variety of structures, including chains and rings (as in polymeric metasilicate), double chains (as in, and sheets (as in. In geology and astronomy, the term silicate is used to mean silicate minerals, ionic solids with silicate anions; as well as rock types that consist predominantly of such minerals. In that context, the term also includes the non-ionic compound silicon dioxide (silica, quartz), which would correspond to x.
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Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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Soviet Union
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
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Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
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Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.
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Springer Science+Business Media
Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.
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Stellar magnetic field
A stellar magnetic field is a magnetic field generated by the motion of conductive plasma inside a star.
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Sulfur
Sulfur or sulphur is a chemical element with symbol S and atomic number 16.
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T Tauri
T Tauri is a variable star in the constellation Taurus, the prototype of the T Tauri stars.
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T Tauri star
T Tauri stars (TTS) are a class of variable stars associated with youth.
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The Astronomical Journal
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
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The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
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Tucson, Arizona
Tucson is a city and the county seat of Pima County, Arizona, United States, and home to the University of Arizona.
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University of Arizona Press
The University of Arizona Press, a publishing house founded in 1959 as a department of the University of Arizona, is a nonprofit publisher of scholarly and regional books.
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Victor Ambartsumian
Victor Amazaspovich Ambartsumian (Ви́ктор Амаза́спович Амбарцумя́н; Վիկտոր Համազասպի Համբարձումյան, Viktor Hamazaspi Hambardzumyan; 12 August 1996) was a Soviet Armenian scientist, and one of the founders of theoretical astrophysics.
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Water
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.
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H H Object, H H Objects, H-H Object, H-H Objects, HH Object, HH Objects, HH object, HH-30, Herbig Haro object, Herbig Haro objects, Herbig haro object, Herbig-Haro, Herbig-Haro Object, Herbig-Haro object, Herbig-Haro objects, Herbig–Haro objects.
References
[1] https://en.wikipedia.org/wiki/Herbig–Haro_object
