| dbo:abstract |
SN 1998aq is a nearby supernova located in the intermediate spiral galaxy NGC 3982, offset 18″ west and 7″ of the galactic nucleus. It was discovered April 13, 1998 by amateur astronomer Mark Armstrong and was confirmed by fellow British amateur Ron Arbour; both members of the U.K. Supernova/Nova Patrol. The event was not visible on a prior check by Armstrong made April 7. It reached peak brightness on April 27, and 15 days later had declined by 1.14 magnitudes in the B (blue) band. Spectroscopic observations determined this was a Type Ia supernova event, and it became one of the best-studied supernova of its type, at least in the visual band. An absorption feature of singly-ionized carbon was (probably) detected nine days before maximum, an indication of unburned ash left over from the original carbon-oxygen core of the progenitor white dwarf. Brightness calibration using Cepheid variables in NGC 3982 gives a peak absolute magnitude estimate of at least −19.47±0.15 (assuming no extinction in the host galaxy). (en) SN 1998aq – supernowa typu Ia odkryta 13 kwietnia 1998 roku przez astronoma amatora Marka Armstronga. Znajdowała się w galaktyce NGC 3982 w gwiazdozbiorze Wielkiej Niedźwiedzicy. (pl) SN 1998aq是一颗位于NGC 3982星系中的超新星。它由业余天文学家发现。 (zh) SN 1998aq — сверхновая звезда типа Ia, вспыхнувшая 13 апреля 1998 года в галактике NGC 3982, которая находится в созвездии Большая Медведица. Одна из самых ярких сверхновых 1990-х годов. (ru) |
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wiki-commons:Special:FilePath/SN1998aq_max_spectra.svg?width=300 |
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https://sne.space http://www.kusastro.kyoto-u.ac.jp/vsnet/SNe/sn1998aq.html https://sne.space/sne/SN1998aq/ |
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| dbp:bV |
−0.18 (en) |
| dbp:class |
Type Ia (en) |
| dbp:constellation |
dbr:Ursa_Major |
| dbp:eventType |
Supernova (en) |
| dbp:host |
dbr:NGC_3982 |
| dbp:name |
SN 1998aq (en) |
| dbp:peak |
12.360000 (xsd:double) |
| dbp:startTime |
1998-04-13 (xsd:date) |
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dbc:Astronomical_objects_discovered_in_1998 dbc:Ursa_Major_(constellation) dbc:Supernovae |
| gold:hypernym |
dbr:Supernova |
| rdf:type |
yago:WikicatAstronomicalObjectsDiscoveredIn1998 yago:Object100002684 yago:PhysicalEntity100001930 dbo:Star |
| rdfs:comment |
SN 1998aq – supernowa typu Ia odkryta 13 kwietnia 1998 roku przez astronoma amatora Marka Armstronga. Znajdowała się w galaktyce NGC 3982 w gwiazdozbiorze Wielkiej Niedźwiedzicy. (pl) SN 1998aq是一颗位于NGC 3982星系中的超新星。它由业余天文学家发现。 (zh) SN 1998aq — сверхновая звезда типа Ia, вспыхнувшая 13 апреля 1998 года в галактике NGC 3982, которая находится в созвездии Большая Медведица. Одна из самых ярких сверхновых 1990-х годов. (ru) SN 1998aq is a nearby supernova located in the intermediate spiral galaxy NGC 3982, offset 18″ west and 7″ of the galactic nucleus. It was discovered April 13, 1998 by amateur astronomer Mark Armstrong and was confirmed by fellow British amateur Ron Arbour; both members of the U.K. Supernova/Nova Patrol. The event was not visible on a prior check by Armstrong made April 7. It reached peak brightness on April 27, and 15 days later had declined by 1.14 magnitudes in the B (blue) band. (en) |
| rdfs:label |
SN 1998aq (pl) SN 1998aq (en) SN 1998aq (ru) SN 1998aq (zh) |
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freebase:SN 1998aq yago-res:SN 1998aq wikidata:SN 1998aq dbpedia-pl:SN 1998aq dbpedia-ru:SN 1998aq dbpedia-zh:SN 1998aq https://global.dbpedia.org/id/3kFh5 |
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