{"id":585,"date":"2022-03-02T17:23:18","date_gmt":"2022-03-02T17:23:18","guid":{"rendered":"https:\/\/pressbooks.ccconline.org\/astronomy\/?post_type=chapter&p=585"},"modified":"2022-03-02T17:23:19","modified_gmt":"2022-03-02T17:23:19","slug":"key-terms-16","status":"publish","type":"chapter","link":"https:\/\/pressbooks.ccconline.org\/astronomy\/chapter\/key-terms-16\/","title":{"raw":"Key Terms","rendered":"Key Terms"},"content":{"raw":"
\r\n
\r\n \t
binary stars<\/dt>\r\n \t
two stars that revolve about each other<\/dd>\r\n<\/dl>\r\n
\r\n \t
brown dwarf<\/dt>\r\n \t
an object intermediate in size between a planet and a star; the approximate mass range is from about 1\/100 of the mass of the Sun up to the lower mass limit for self-sustaining nuclear reactions, which is about 1\/12 the mass of the Sun<\/dd>\r\n<\/dl>\r\n
\r\n \t
eclipsing binary<\/dt>\r\n \t
a binary star in which the plane of revolution of the two stars is nearly edge-on to our line of sight, so that the light of one star is periodically diminished by the other passing in front of it<\/dd>\r\n<\/dl>\r\n
\r\n \t
H\u2013R diagram<\/dt>\r\n \t
(Hertzsprung\u2013Russell diagram) a plot of luminosity against surface temperature (or spectral type) for a group of stars<\/dd>\r\n<\/dl>\r\n
\r\n \t
main sequence<\/dt>\r\n \t
a sequence of stars on the Hertzsprung\u2013Russell diagram, containing the majority of stars, that runs diagonally from the upper left to the lower right<\/dd>\r\n<\/dl>\r\n
\r\n \t
mass-luminosity relation<\/dt>\r\n \t
the observed relation between the masses and luminosities of many (90% of all) stars<\/dd>\r\n<\/dl>\r\n
\r\n \t
selection effect<\/dt>\r\n \t
the selection of sample data in a nonrandom way, causing the sample data to be unrepresentative of the entire data set<\/dd>\r\n<\/dl>\r\n
\r\n \t
spectroscopic binary<\/dt>\r\n \t
a binary star in which the components are not resolved but whose binary nature is indicated by periodic variations in radial velocity, indicating orbital motion<\/dd>\r\n<\/dl>\r\n
\r\n \t
visual binary<\/dt>\r\n \t
a binary star in which the two components are telescopically resolved<\/dd>\r\n<\/dl>\r\n
\r\n \t
white dwarf<\/dt>\r\n \t
a low-mass star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; such a star is near its final state of life<\/dd>\r\n<\/dl>\r\n<\/div>\r\n
This book was adapted from the following: Fraknoi, A., Morrison, D., & Wolff, S. C. (2016). Key Terms In Astronomy<\/i>. OpenStax. https:\/\/openstax.org\/books\/astronomy\/pages\/18-key-terms under a Creative Commons Attribution License 4.0<\/a><\/div>\r\n
Access the entire book for free at\u00a0https:\/\/openstax.org\/books\/astronomy\/pages\/1-introduction<\/a><\/div>","rendered":"
\n
\n
binary stars<\/dt>\n
two stars that revolve about each other<\/dd>\n<\/dl>\n
\n
brown dwarf<\/dt>\n
an object intermediate in size between a planet and a star; the approximate mass range is from about 1\/100 of the mass of the Sun up to the lower mass limit for self-sustaining nuclear reactions, which is about 1\/12 the mass of the Sun<\/dd>\n<\/dl>\n
\n
eclipsing binary<\/dt>\n
a binary star in which the plane of revolution of the two stars is nearly edge-on to our line of sight, so that the light of one star is periodically diminished by the other passing in front of it<\/dd>\n<\/dl>\n
\n
H\u2013R diagram<\/dt>\n
(Hertzsprung\u2013Russell diagram) a plot of luminosity against surface temperature (or spectral type) for a group of stars<\/dd>\n<\/dl>\n
\n
main sequence<\/dt>\n
a sequence of stars on the Hertzsprung\u2013Russell diagram, containing the majority of stars, that runs diagonally from the upper left to the lower right<\/dd>\n<\/dl>\n
\n
mass-luminosity relation<\/dt>\n
the observed relation between the masses and luminosities of many (90% of all) stars<\/dd>\n<\/dl>\n
\n
selection effect<\/dt>\n
the selection of sample data in a nonrandom way, causing the sample data to be unrepresentative of the entire data set<\/dd>\n<\/dl>\n
\n
spectroscopic binary<\/dt>\n
a binary star in which the components are not resolved but whose binary nature is indicated by periodic variations in radial velocity, indicating orbital motion<\/dd>\n<\/dl>\n
\n
visual binary<\/dt>\n
a binary star in which the two components are telescopically resolved<\/dd>\n<\/dl>\n
\n
white dwarf<\/dt>\n
a low-mass star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; such a star is near its final state of life<\/dd>\n<\/dl>\n<\/div>\n
This book was adapted from the following: Fraknoi, A., Morrison, D., & Wolff, S. C. (2016). Key Terms In Astronomy<\/i>. OpenStax. https:\/\/openstax.org\/books\/astronomy\/pages\/18-key-terms under a Creative Commons Attribution License 4.0<\/a><\/div>\n
Access the entire book for free at\u00a0https:\/\/openstax.org\/books\/astronomy\/pages\/1-introduction<\/a><\/div>\n","protected":false},"author":33,"menu_order":11,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[48],"contributor":[],"license":[],"class_list":["post-585","chapter","type-chapter","status-publish","hentry","chapter-type-numberless"],"part":572,"_links":{"self":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapters\/585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/wp\/v2\/users\/33"}],"version-history":[{"count":1,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapters\/585\/revisions"}],"predecessor-version":[{"id":586,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapters\/585\/revisions\/586"}],"part":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/parts\/572"}],"metadata":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapters\/585\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/wp\/v2\/media?parent=585"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/pressbooks\/v2\/chapter-type?post=585"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/wp\/v2\/contributor?post=585"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.ccconline.org\/astronomy\/wp-json\/wp\/v2\/license?post=585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}