Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Stellar_classification> ?p ?o }
- Stellar_classification abstract "In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with absorption lines. Each line indicates an ion of a certain chemical element, with the line strength indicating the abundance of that ion. The relative abundance of the different ions varies with the temperature of the photosphere. The spectral class of a star is a short code summarizing the ionization state, giving an objective measure of the photosphere's temperature and density.Most stars are currently classified under the Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type). Each letter class is then subdivided using a numeric digit with 0 being hottest and 9 being coolest (e.g. A8, A9, F0, F1 form a sequence from hotter to cooler). The sequence has been expanded with classes for other stars and star-like objects that do not fit in the classical system, such as class D for white dwarfs and class C for carbon stars.In the MK system, a luminosity class is added to the spectral class using Roman numerals. This is based on the width of certain absorption lines in the star's spectrum, which vary with the density of the atmosphere and so distinguish giant stars from dwarfs. Luminosity class 0 or Ia+ stars for hypergiants, class I stars for supergiants, class II for bright giants, class III for regular giants, class IV for sub-giants, class V for main-sequence stars, class sd for sub-dwarfs, and class D for white dwarfs. The full spectral class for the Sun is then G2V, indicating a main-sequence star with a temperature around 5,800K.".
- Stellar_classification wikiPageExternalLink specmodels.iag.usp.br.
- Stellar_classification wikiPageExternalLink vol11sp.pdf.
- Stellar_classification wikiPageExternalLink spectra.html.
- Stellar_classification wikiPageExternalLink MKbook.html.
- Stellar_classification wikiPageID "28927".
- Stellar_classification wikiPageLength "69479".
- Stellar_classification wikiPageOutDegree "290".
- Stellar_classification wikiPageRevisionID "707324624".
- Stellar_classification wikiPageWikiLink 10_Lacertae.
- Stellar_classification wikiPageWikiLink 59_Cygni.
- Stellar_classification wikiPageWikiLink 61_Cygni.
- Stellar_classification wikiPageWikiLink 61_Ursae_Majoris.
- Stellar_classification wikiPageWikiLink 78_Ursae_Majoris.
- Stellar_classification wikiPageWikiLink 9_Cephei.
- Stellar_classification wikiPageWikiLink 9_Pegasi.
- Stellar_classification wikiPageWikiLink Achernar.
- Stellar_classification wikiPageWikiLink Alkali_metal.
- Stellar_classification wikiPageWikiLink Alnilam.
- Stellar_classification wikiPageWikiLink Alpha_Centauri.
- Stellar_classification wikiPageWikiLink Alpha_Leporis.
- Stellar_classification wikiPageWikiLink Altair.
- Stellar_classification wikiPageWikiLink Ammonia.
- Stellar_classification wikiPageWikiLink Angelo_Secchi.
- Stellar_classification wikiPageWikiLink Annie_Jump_Cannon.
- Stellar_classification wikiPageWikiLink Antares.
- Stellar_classification wikiPageWikiLink Antonia_Maury.
- Stellar_classification wikiPageWikiLink Arabic_numerals.
- Stellar_classification wikiPageWikiLink Arcturus.
- Stellar_classification wikiPageWikiLink Astrograph.
- Stellar_classification wikiPageWikiLink Astronomy.
- Stellar_classification wikiPageWikiLink Asymptotic_giant_branch.
- Stellar_classification wikiPageWikiLink Atmosphere.
- Stellar_classification wikiPageWikiLink B(e)_star.
- Stellar_classification wikiPageWikiLink B-type_main-sequence_star.
- Stellar_classification wikiPageWikiLink Balmer_series.
- Stellar_classification wikiPageWikiLink Bellatrix.
- Stellar_classification wikiPageWikiLink Beta_Andromedae.
- Stellar_classification wikiPageWikiLink Beta_Aquarii.
- Stellar_classification wikiPageWikiLink Beta_Aquilae.
- Stellar_classification wikiPageWikiLink Beta_Canum_Venaticorum.
- Stellar_classification wikiPageWikiLink Beta_Leporis.
- Stellar_classification wikiPageWikiLink Beta_Lyrae.
- Stellar_classification wikiPageWikiLink Betelgeuse.
- Stellar_classification wikiPageWikiLink Brady_Haran.
- Stellar_classification wikiPageWikiLink Bright_giant.
- Stellar_classification wikiPageWikiLink Brown_dwarf.
- Stellar_classification wikiPageWikiLink Calcium.
- Stellar_classification wikiPageWikiLink Capella.
- Stellar_classification wikiPageWikiLink Carbon.
- Stellar_classification wikiPageWikiLink Carbon_monoxide.
- Stellar_classification wikiPageWikiLink Carbon_star.
- Stellar_classification wikiPageWikiLink Category:Classification_systems.
- Stellar_classification wikiPageWikiLink Category:Hertzsprung–Russell_classifications.
- Stellar_classification wikiPageWikiLink Category:Star_types.
- Stellar_classification wikiPageWikiLink Category:Stars.
- Stellar_classification wikiPageWikiLink Category:Stars_by_luminosity_class.
- Stellar_classification wikiPageWikiLink Category:Stars_by_spectral_type.
- Stellar_classification wikiPageWikiLink Category:Stellar_astronomy.
- Stellar_classification wikiPageWikiLink Cecilia_Payne-Gaposchkin.
- Stellar_classification wikiPageWikiLink Chemical_element.
- Stellar_classification wikiPageWikiLink Chi2_Orionis.
- Stellar_classification wikiPageWikiLink Chi_Pegasi.
- Stellar_classification wikiPageWikiLink Chromium.
- Stellar_classification wikiPageWikiLink Cygnus_OB2-12.
- Stellar_classification wikiPageWikiLink Degenerate_matter.
- Stellar_classification wikiPageWikiLink Deneb.
- Stellar_classification wikiPageWikiLink Deuterium.
- Stellar_classification wikiPageWikiLink Diatomic_carbon.
- Stellar_classification wikiPageWikiLink Diffraction_grating.
- Stellar_classification wikiPageWikiLink Dwarf_star.
- Stellar_classification wikiPageWikiLink Edith_Kellman.
- Stellar_classification wikiPageWikiLink Edward_Charles_Pickering.
- Stellar_classification wikiPageWikiLink Effective_temperature.
- Stellar_classification wikiPageWikiLink Electromagnetic_radiation.
- Stellar_classification wikiPageWikiLink Epsilon_Cygni.
- Stellar_classification wikiPageWikiLink Epsilon_Eridani.
- Stellar_classification wikiPageWikiLink Epsilon_Geminorum.
- Stellar_classification wikiPageWikiLink Epsilon_Virginis.
- Stellar_classification wikiPageWikiLink Eta_Aurigae.
- Stellar_classification wikiPageWikiLink Eta_Boötis.
- Stellar_classification wikiPageWikiLink Eta_Canis_Majoris.
- Stellar_classification wikiPageWikiLink Eta_Leonis.
- Stellar_classification wikiPageWikiLink Eta_Ursae_Majoris.
- Stellar_classification wikiPageWikiLink Fomalhaut.
- Stellar_classification wikiPageWikiLink Forbidden_mechanism.
- Stellar_classification wikiPageWikiLink Galaxy.
- Stellar_classification wikiPageWikiLink Gamma_Cassiopeiae.
- Stellar_classification wikiPageWikiLink Gamma_Cygni.
- Stellar_classification wikiPageWikiLink Gamma_Draconis.
- Stellar_classification wikiPageWikiLink Gamma_Ursae_Majoris.
- Stellar_classification wikiPageWikiLink Giant_star.
- Stellar_classification wikiPageWikiLink Gravity.
- Stellar_classification wikiPageWikiLink Guest_star_(astronomy).
- Stellar_classification wikiPageWikiLink HD_149382.
- Stellar_classification wikiPageWikiLink HD_21389.
- Stellar_classification wikiPageWikiLink Harvard_College_Observatory.
- Stellar_classification wikiPageWikiLink Helium.
- Stellar_classification wikiPageWikiLink Hertzsprung–Russell_diagram.
- Stellar_classification wikiPageWikiLink Hydride.