S-type star


S-type star

A star with spectral type S is a late-type giant star (class K5–M) whose spectrum displays bands from zirconium oxide. [p. 77, "Observing Variable Stars", Gerry A. Good, Springer, 2003, ISBN 1852334983.] It may also have features from cyanogen, lithium, technetium, and other fifth-period oxides such as yttrium oxide. Most of these stars are long-period variables. [ [http://www.daviddarling.info/encyclopedia/S/S_star.html S star] , "The Internet Encyclopedia of Science", David Darling. Accessed on line September 9, 2008.]

References

External links

* [http://www.britannica.com/EBchecked/topic/514716/S-type-star www.britannica.com]
* [http://everything2.com/title/stellar%20spectra stellar spectra]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Late-type star — In stellar classification, a late type star is a star of class K or class M. The term was coined in the early 20th century, when there was a belief that stars began their history as early type stars of class O, B, or A, and subsequently cooled to …   Wikipedia

  • Early-type star — In stellar classification, an early type star is a star of class O, B, A, or F0 to F5. This old and slightly misleading term was coined in the early 20th century, when it was believed that stars began their history as early type stars and… …   Wikipedia

  • a-type star — ˈāˌ ̷ ̷ noun Usage: usually capitalized A Etymology: A (I) : a star * * * A type star «AY TYP», a star belonging to spectral class A, characterized by strong hydrogen lines in its spectrum. Sirius and Vega are A type stars …   Useful english dictionary

  • late-type star — noun a star of spectral type K or M See Also: early type star …   Wiktionary

  • early-type star — noun a star of spectral type O, B, A, or F0 to F5. See Also: late type star …   Wiktionary

  • o-type star — ˈōˌtīp noun Usage: usually capitalized O : a star of spectral type O see spectral type table …   Useful english dictionary

  • Star Bonifacio Echeverria, S.A. — Star Bonifacio Echeverria, S.A. was a manufacturer of small arms (principally handguns and sub machineguns) in the Basque region of Spain from about 1905 until 1997. Company History Bonifacio Echeverria and the ancestry of StarThe Eibar region… …   Wikipedia

  • STAR — STAR, Bonifacio Echeverría S.A. Saltar a navegación, búsqueda La STAR, Bonifacio Echeverría S.A., fue una empresa española dedicada a la fabricación de armas, especialmente de armas cortas. Radicada en Éibar, Guipúzcoa (País Vasco, España),… …   Wikipedia Español

  • TYPE — Modèle qui détermine la forme d’une série d’êtres, lui même étant l’un de ces êtres (prototype, archétype); être qui présente la forme la plus caractéristique ou la plus parfaite d’une série (être «typique», «typé»; «typifier»: exagérer les… …   Encyclopédie Universelle

  • star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.