home *** CD-ROM | disk | FTP | other *** search
/ Eyewitness: Encyclopedia of Space & the Universe / DKMMSPAC.iso / unst / star / star2p.png < prev    next >
Portable Network Graphic  |  1996-04-23  |  28KB  |  516x386  |  8-bit (148 colors)
Labels: text | electronics | screenshot | font | operating system | colorfulness
OCR: PLOTTING STAR TYPES THE HERTZSPRUNG-RUSSELL (or H-R) diagram is a fundamental tool for SUPERGIANTS astronomers. It is used to plot the absolute magnitudes of stars against their spectral types (colors), or GIANTS MAIN-SEQUENCE STARS against their surface temperatures, +5 which determine their spectral types. Stars fall into various groups on the diagram, which indicate + 10 ABSOLUTE MAGNITUDE stages in stellar life cycles. The WHITE diagram helps astronomers to DWARFS understand the way in which stars +16 00 BO AO FC GO KC MO evolve and to establish relationships SPECTRAL TYPE (COLOR) between stellar properties. HERTZSPRUNG-RUSSELL DIAGRAM Stars can be plotted on an H-R diagram according to their characteristics. During their lives, stars move between different CASE STUDY areas on the diag ...