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{{Short description|Type of chemically peculiar star}}
An '''Am star''' or '''metallic-line star''' is a type of [[chemically peculiar star|chemically peculiar]] [[star]] of [[spectral type]] A whose [[stellar spectrum|spectrum]] has strong and often variable absorption lines of metals such as [[zinc]], [[strontium]], [[zirconium]], and [[barium]], and deficiencies of others, such as [[calcium]] and [[scandium]]. The original definition of an Am star was one in which the star shows "an apparent surface underabundance of [[calcium|Ca]] (and/or [[scandium|Sc]]) and/or an apparent overabundance of the [[iron group|Fe group]] and heavier elements".<ref name=conti1970/>
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| journal=Monthly Notices of the Royal Astronomical Society
| volume=429 | issue=1 | pages=119–125 | date=February 2013
| doi=10.1093/mnras/sts318 | doi-access=free
| bibcode=2013MNRAS.429..119P | arxiv=1211.1535 | s2cid=119231581
| postscript=. }}</ref>||align="center"|4.64
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<ref name=kochukov>{{cite journal | last1=Kochukhov | first1=O. | title=Asteroseismology of chemically peculiar stars | journal=Communications in Asteroseismology | volume=159 | pages=61–70 |date=March 2009 | bibcode=2009CoAst.159...61K |arxiv = 0812.0374 |doi = 10.1553/cia159s61 | s2cid=18174900 }}</ref>
<ref name=neiner>{{cite journal|bibcode=2017MNRAS.468L..46N|arxiv=1702.01621|title=Discovery of a magnetic field in the δ Scuti F2m star ρ Pup|journal=Monthly Notices of the Royal Astronomical Society: Letters|volume=468|pages=L46–L49|last1=Neiner|first1=C|last2=Wade|first2=G. A|last3=Sikora|first3=J|year=2017|issue=1|doi=10.1093/mnrasl/slx023|doi-access=free |s2cid=119201285}}</ref>
<ref name=conti1970>{{cite journal|bibcode=1970PASP...82..781C|title=The Metallic-Line Stars|journal=Publications of the Astronomical Society of the Pacific|volume=82|pages=781|last1=Conti|first1=Peter S|year=1970|issue=488|doi=10.1086/128965|doi-access=free}}</ref>
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