{"id":153,"date":"2018-11-16T12:54:53","date_gmt":"2018-11-16T12:54:53","guid":{"rendered":"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/?post_type=chapter&#038;p=153"},"modified":"2018-11-19T04:35:59","modified_gmt":"2018-11-19T04:35:59","slug":"h-r-diagram","status":"publish","type":"chapter","link":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/chapter\/h-r-diagram\/","title":{"rendered":"H. R. Diagram"},"content":{"raw":"<img class=\"aligncenter wp-image-166 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761.jpg\" alt=\"\" width=\"1971\" height=\"1320\" \/> <img class=\"aligncenter wp-image-165 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_02-e1542601503557.jpg\" alt=\"\" width=\"1980\" height=\"2722\" \/> <img class=\"aligncenter wp-image-164 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_03-e1542601536880.jpg\" alt=\"\" width=\"2029\" height=\"2565\" \/> <img class=\"aligncenter wp-image-163 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_04-e1542601557878.jpg\" alt=\"\" width=\"2079\" height=\"2780\" \/> <img class=\"aligncenter wp-image-162 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_05-e1542601691105.jpg\" alt=\"\" width=\"2021\" height=\"2747\" \/> <img class=\"aligncenter wp-image-161 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_06-e1542601710250.jpg\" alt=\"\" width=\"1980\" height=\"2772\" \/> <img class=\"aligncenter wp-image-160 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_07-e1542601738302.jpg\" alt=\"\" width=\"1765\" height=\"2664\" \/> <img class=\"aligncenter wp-image-159 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_08-e1542601757797.jpg\" alt=\"\" width=\"2095\" height=\"2260\" \/> <img class=\"aligncenter wp-image-158 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_09-e1542601782268.jpg\" alt=\"\" width=\"1988\" height=\"2763\" \/> <img class=\"aligncenter wp-image-157 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_10-e1542601812644.jpg\" alt=\"\" width=\"1955\" height=\"2714\" \/> <img class=\"aligncenter wp-image-156 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_11-e1542601833731.jpg\" alt=\"\" width=\"1938\" height=\"2730\" \/> <img class=\"aligncenter wp-image-155 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625.jpg\" alt=\"\" width=\"1889\" height=\"1765\" \/> <img class=\"aligncenter wp-image-154 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856.jpg\" alt=\"\" width=\"1947\" height=\"2054\" \/>\r\n<p><\/p>\r\n<p style=\"text-align: justify\">The basic material is from Astronomy and Astrophysics with Elements of Cosmology by V. B. Bhatia. It has been amplified with the help of the following sources:<\/p>\r\n\r\n<ul>\r\n \t<li>http:\/\/abyss.uoregon.edu\/~js\/ast122\/lectures\/lec11.html<\/li>\r\n \t<li>http:\/\/www.atnf.csiro.au\/outreach\/education\/senior\/astrophysics\/stellarevolution_hrintro.html<\/li>\r\n \t<li>https:\/\/en.wikipedia.org\/wiki\/Hertzsprung%E2%80%93Russell_diagram<\/li>\r\n \t<li>http:\/\/astro.unl.edu\/naap\/hr\/hr_background3.html<\/li>\r\n \t<li>http:\/\/hyperphysics.phy-astr.gsu.edu\/hbase\/Astro\/herrus.html<\/li>\r\n \t<li>https:\/\/www.cliffsnotes.com\/study-guides\/astronomy\/the-hertzsprung-russell-diagram\/hertzsprung-russell-diagram-the-basicsweb.njit.edu\/~gary\/202\/Lecture17.html<\/li>\r\n \t<li>http:\/\/chandra.harvard.edu\/edu\/formal\/variable_stars\/HR_student.html<\/li>\r\n \t<li>http:\/\/spiff.rit.edu\/classes\/phys230\/lectures\/hr\/hr.html<\/li>\r\n \t<li>https:\/\/commons.wikimedia.org\/wiki\/File:M3_color_magnitude_diagram.jpg<\/li>\r\n \t<li>https:\/\/www.eso.org\/public\/images\/eso0728c\/<\/li>\r\n<\/ul>\r\n<p style=\"text-align: justify\">H. R. Diagram plays an important role in unravelling the story of stellar evolution. Many texts emphasize this aspect of H. R. Diagrams. Two excellent texts for this and other topics in astronomy are:<\/p>\r\n<p><\/p>\r\n<p>1. The Physical Universe: An Introduction to Astronomy by Frank H. Shu.<\/p>\r\n<p>2. Astrophysical Concepts by Martin Harwit.<\/p>","rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-166 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761.jpg\" alt=\"\" width=\"1971\" height=\"1320\" srcset=\"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761.jpg 1971w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761-300x201.jpg 300w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761-768x514.jpg 768w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_01-e1542601478761-1024x686.jpg 1024w, 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https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625-768x718.jpg 768w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625-1024x957.jpg 1024w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625-65x61.jpg 65w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625-225x210.jpg 225w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_12-e1542601855625-350x327.jpg 350w\" sizes=\"auto, (max-width: 1889px) 100vw, 1889px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-154 size-full\" src=\"http:\/\/phyp06.epgpbooks.inflibnet.ac.in\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856.jpg\" alt=\"\" width=\"1947\" height=\"2054\" srcset=\"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856.jpg 1947w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-284x300.jpg 284w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-768x810.jpg 768w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-971x1024.jpg 971w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-65x69.jpg 65w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-225x237.jpg 225w, https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-content\/uploads\/sites\/97\/2018\/11\/1523530381Module14Text_Page_13-e1542601877856-350x369.jpg 350w\" sizes=\"auto, (max-width: 1947px) 100vw, 1947px\" \/><\/p>\n<p style=\"text-align: justify\">The basic material is from Astronomy and Astrophysics with Elements of Cosmology by V. B. Bhatia. It has been amplified with the help of the following sources:<\/p>\n<ul>\n<li>http:\/\/abyss.uoregon.edu\/~js\/ast122\/lectures\/lec11.html<\/li>\n<li>http:\/\/www.atnf.csiro.au\/outreach\/education\/senior\/astrophysics\/stellarevolution_hrintro.html<\/li>\n<li>https:\/\/en.wikipedia.org\/wiki\/Hertzsprung%E2%80%93Russell_diagram<\/li>\n<li>http:\/\/astro.unl.edu\/naap\/hr\/hr_background3.html<\/li>\n<li>http:\/\/hyperphysics.phy-astr.gsu.edu\/hbase\/Astro\/herrus.html<\/li>\n<li>https:\/\/www.cliffsnotes.com\/study-guides\/astronomy\/the-hertzsprung-russell-diagram\/hertzsprung-russell-diagram-the-basicsweb.njit.edu\/~gary\/202\/Lecture17.html<\/li>\n<li>http:\/\/chandra.harvard.edu\/edu\/formal\/variable_stars\/HR_student.html<\/li>\n<li>http:\/\/spiff.rit.edu\/classes\/phys230\/lectures\/hr\/hr.html<\/li>\n<li>https:\/\/commons.wikimedia.org\/wiki\/File:M3_color_magnitude_diagram.jpg<\/li>\n<li>https:\/\/www.eso.org\/public\/images\/eso0728c\/<\/li>\n<\/ul>\n<p style=\"text-align: justify\">H. R. Diagram plays an important role in unravelling the story of stellar evolution. Many texts emphasize this aspect of H. R. Diagrams. Two excellent texts for this and other topics in astronomy are:<\/p>\n<\/p>\n<p>1. The Physical Universe: An Introduction to Astronomy by Frank H. Shu.<\/p>\n<p>2. Astrophysical Concepts by Martin Harwit.<\/p>\n","protected":false},"author":4,"menu_order":9,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":["prof-v-b-bhatia"],"pb_section_license":""},"chapter-type":[],"contributor":[58],"license":[],"class_list":["post-153","chapter","type-chapter","status-publish","hentry","contributor-prof-v-b-bhatia"],"part":3,"_links":{"self":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapters\/153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/wp\/v2\/users\/4"}],"version-history":[{"count":3,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapters\/153\/revisions"}],"predecessor-version":[{"id":172,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapters\/153\/revisions\/172"}],"part":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/parts\/3"}],"metadata":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapters\/153\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/wp\/v2\/media?parent=153"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/pressbooks\/v2\/chapter-type?post=153"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/wp\/v2\/contributor?post=153"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/ebooks.inflibnet.ac.in\/phyp06\/wp-json\/wp\/v2\/license?post=153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}