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metallicity

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Metallicity - Astronomy & Astrophysics (A&A)
Metallicity measures the abundance of the elements heavier than hydrogen and helium (such as carbon, oxygen, iron, …). In stellar astrophysics, metallicity usually refers to the abundance of iron and is defined as the iron-to-hydrogen ratio. www.aanda.org
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Metallicity - Wikipedia
In astronomy, metallicity is the abundance of elements present in an object that are heavier than hydrogen and helium. en.wikipedia.org
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The atomic gas sequence and mass–metallicity relation from dwarfs ...
We also find that the shape and scatter of the atomic gas sequence and mass–metallicity relation are strongly linked for both dwarfs and more massive galaxies. academic.oup.com
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metallicity
metallicity rare. (mɛtəˈlɪsɪtɪ) [f. metallic a. + -ity.] The quality of being metallic.1831 Amer. Jrnl. Sci. XIX. 188 The..method which Dr. Wollaston employed to discover metallic titanium in the scoria of iron, and to prove the metallicity of the small crystals of titanium. 1883 Encycl. Brit. XVI. ... Oxford English Dictionary
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Metallicity - an overview | ScienceDirect Topics
Metallicity is the property of a metal to conduct electricity or heat. A simple metal is directly tied to its transport properties. www.sciencedirect.com
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Metallicity of stars
Metallicity of stars. Astronomers call all elements more massive than Helium `metals', and denote them by $ Z$ ( $ X$ and $ Y$ being the hydrogen and ... icc.dur.ac.uk
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metallicity
Metallicity is the ratio of metals (elements except hydrogen and helium) to the total mass of an object, often quantified as the mass fraction of metals (Z). astro.vaporia.com
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ELI5: How does metallicity affect a star? : r/explainlikeimfive - Reddit
Metallicity refers to the presence of elements heavier than hydrogen an helium. So a low-metallicity star has very little of these elements and a metal rich ... www.reddit.com
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stellar metallicities & abundance patterns
The technique of measuring metallicities and abundance patterns from old stellar systems is well-established. ned.ipac.caltech.edu
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Metallicity | Space Wiki - Fandom
In astronomy and physical cosmology, the metallicity of an object is the proportion of its matter made up of chemical elements other than hydrogen and helium. space.fandom.com
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Elemental Abundances | Center for Astrophysics | Harvard ...
The fraction of heavier elements is called “metallicity”, and it provides one way for astronomers to measure when a particular star or nebula formed. A low ... www.cfa.harvard.edu
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Finding two populations in a set of data I have a set of data (metallicity of globular clusters) and wish to determine the presence of two sub-populations. I know there are two populations but I am unsure on how to sp...
For anyone else interested, I used Gaussian Mixture Modeling (GMM) algorithm to determine the means of the two populations and separate them. Details of the techniques used are explained in the paper linked on this page: <
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Metallicity distribution function
The metallicity distribution function is an important concept in stellar and galactic evolution. It is a curve of what proportion of stars have a particular metallicity ([Fe/H], the relative abundance of iron and hydrogen) of a population of stars wikipedia.org
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HD 108063
The enormous metallicity of HD 108063 has strong effect on its apparent parameters. A metal-rich star has a cooler surface temperature than a lower-metallicity star, with the strength of the effect increasing with a higher metallicity. wikipedia.org
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HD 68375
Specifically, it is a red clump star, at the cool end of the horizontal branch where stars with near-solar metallicity are found. HD 68375 is slightly metal deficient with a metallicity 76% that of the Sun and spins with a poorly constrained projected rotational velocity of . wikipedia.org
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