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- Dwarf_nova abstract "A U Geminorum-type variable star, or dwarf nova (pl. novae) is a type of cataclysmic variable star consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion. The first one to be observed was U Geminorum in 1855; however, the mechanism was not known till 1974, when Brian Warner showed that the nova is due to the increase of the luminosity of the accretion disk. They are similar to classical novae in that the white dwarf is involved in periodic outbursts, but the mechanisms are different: classical novae result from the fusion and detonation of accreted hydrogen, while current theory suggests that dwarf novae result from instability in the accretion disk, when gas in the disk reaches a critical temperature that causes a change in viscosity, resulting in a collapse onto the white dwarf that releases large amounts of gravitational potential energy.Dwarf novae are distinct from classical novae in other ways; their luminosity is lower, and they are typically recurrent on a scale from days to decades. The luminosity of the outburst increases with the recurrence interval as well as the orbital period; recent research with the Hubble space telescope suggests that the latter relationship could make dwarf novae useful standard candles for measuring cosmic distances.There are three subtypes of U Geminorum star (UG):SS Cygni stars (UGSS), which increase in brightness by 2-6 mag in V in 1–2 days, and return to their original brightnesses in several subsequent days.SU Ursae Majoris stars (UGSU), which have brighter and longer "supermaxima" outbursts, or "super-outbursts," in addition to normal outbursts. Varieties of SU Ursae Majoris star include ER Ursae Majoris stars and WZ Sagittae stars.Z Camelopardalis stars (UGZ), which temporarily "halt" at a particular brightness below their peak.↑ ↑ 2.0 2.1 2.2 ↑ 3.0 3.1 ↑ ↑".
- Dwarf_nova thumbnail HTCas-LB1-2010Nov12.jpg?width=300.
- Dwarf_nova wikiPageExternalLink 30distance.
- Dwarf_nova wikiPageExternalLink 0200.pdf.
- Dwarf_nova wikiPageExternalLink messenger-no80-43-45.pdf.
- Dwarf_nova wikiPageID "5189278".
- Dwarf_nova wikiPageLength "4325".
- Dwarf_nova wikiPageOutDegree "24".
- Dwarf_nova wikiPageRevisionID "642016095".
- Dwarf_nova wikiPageWikiLink Accretion_disc.
- Dwarf_nova wikiPageWikiLink Accretion_disk.
- Dwarf_nova wikiPageWikiLink Apparent_magnitude.
- Dwarf_nova wikiPageWikiLink Binary_star.
- Dwarf_nova wikiPageWikiLink Cataclysmic_variable_star.
- Dwarf_nova wikiPageWikiLink Category:Dwarf_novae.
- Dwarf_nova wikiPageWikiLink Cosmic_distance_ladder.
- Dwarf_nova wikiPageWikiLink Gravity.
- Dwarf_nova wikiPageWikiLink Hubble_Space_Telescope.
- Dwarf_nova wikiPageWikiLink Hubble_space_telescope.
- Dwarf_nova wikiPageWikiLink Hypernova.
- Dwarf_nova wikiPageWikiLink Luminosity.
- Dwarf_nova wikiPageWikiLink Nova.
- Dwarf_nova wikiPageWikiLink Potential_energy.
- Dwarf_nova wikiPageWikiLink Standard_candle.
- Dwarf_nova wikiPageWikiLink Supernova.
- Dwarf_nova wikiPageWikiLink Temperature.
- Dwarf_nova wikiPageWikiLink U_Geminorum.
- Dwarf_nova wikiPageWikiLink V_band.
- Dwarf_nova wikiPageWikiLink Viscosity.
- Dwarf_nova wikiPageWikiLink WZ_Sagittae.
- Dwarf_nova wikiPageWikiLink White_dwarf.
- Dwarf_nova wikiPageWikiLink Wiktionary:nova.
- Dwarf_nova wikiPageWikiLink File:HTCas-LB1-2010Nov12.jpg.
- Dwarf_nova wikiPageWikiLink File:HT_Cas-LC.jpg.
- Dwarf_nova wikiPageWikiLinkText "DN".
- Dwarf_nova wikiPageWikiLinkText "Dwarf nova".
- Dwarf_nova wikiPageWikiLinkText "UG".
- Dwarf_nova wikiPageWikiLinkText "UG-type stars".
- Dwarf_nova wikiPageWikiLinkText "UGSS".
- Dwarf_nova wikiPageWikiLinkText "UGSU".
- Dwarf_nova wikiPageWikiLinkText "UGWZ".
- Dwarf_nova wikiPageWikiLinkText "UGZ".
- Dwarf_nova wikiPageWikiLinkText "dwarf nova".
- Dwarf_nova wikiPageWikiLinkText "dwarf novae".
- Dwarf_nova hasPhotoCollection Dwarf_nova.
- Dwarf_nova wikiPageUsesTemplate Template:Accessdate.
- Dwarf_nova wikiPageUsesTemplate Template:Portal.
- Dwarf_nova wikiPageUsesTemplate Template:Reflist.
- Dwarf_nova wikiPageUsesTemplate Template:Variable_star_topics.
- Dwarf_nova wikiPageUsesTemplate Template:White_dwarf.
- Dwarf_nova subject Category:Dwarf_novae.
- Dwarf_nova hypernym Star.
- Dwarf_nova type Event.
- Dwarf_nova type Star.
- Dwarf_nova type Event.
- Dwarf_nova type Concept.
- Dwarf_nova comment "A U Geminorum-type variable star, or dwarf nova (pl. novae) is a type of cataclysmic variable star consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion. The first one to be observed was U Geminorum in 1855; however, the mechanism was not known till 1974, when Brian Warner showed that the nova is due to the increase of the luminosity of the accretion disk.".
- Dwarf_nova label "Dwarf nova".
- Dwarf_nova sameAs Patuljasta_nova.
- Dwarf_nova sameAs Nova_nana.
- Dwarf_nova sameAs Zwergnova.
- Dwarf_nova sameAs Nova_enana.
- Dwarf_nova sameAs Kääpiönova.
- Dwarf_nova sameAs Nova_naine.
- Dwarf_nova sameAs Nova_nana.
- Dwarf_nova sameAs 矮新星.
- Dwarf_nova sameAs ახლისმსგავსი_ვარსკვლავი.
- Dwarf_nova sameAs Nowa_karłowata.
- Dwarf_nova sameAs m.0d6zpd.
- Dwarf_nova sameAs Карликовая_новая.
- Dwarf_nova sameAs Trpasličia_nova.
- Dwarf_nova sameAs Cüce_nova.
- Dwarf_nova sameAs Карликова_нова.
- Dwarf_nova sameAs Q244264.
- Dwarf_nova sameAs Q244264.
- Dwarf_nova sameAs 矮新星.
- Dwarf_nova wasDerivedFrom Dwarf_nova?oldid=642016095.
- Dwarf_nova depiction HTCas-LB1-2010Nov12.jpg.
- Dwarf_nova isPrimaryTopicOf Dwarf_nova.