{"id":"https://openalex.org/W808924946","doi":null,"title":"Spectra of type I supernovae. I - Generalities. II - Interpretation of the spectra of Sn 1960 in NGC 4496 from 8 to 20 days after the maximum of luminosity.","display_name":"Spectra of type I supernovae. I - Generalities. II - Interpretation of the spectra of Sn 1960 in NGC 4496 from 8 to 20 days after the maximum of luminosity.","publication_year":1972,"publication_date":"1972-08-01","ids":{"openalex":"https://openalex.org/W808924946","mag":"808924946"},"language":"en","primary_location":{"id":"mag:808924946","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19720056220","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy and Astrophysics","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5020217916","display_name":"Courtney P. Gordon","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I116578957","display_name":"Goddard Institute for Space Studies","ror":"https://ror.org/01cyfxe35","country_code":"US","type":"facility","lineage":["https://openalex.org/I116578957","https://openalex.org/I4210124779","https://openalex.org/I78577930"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Courtney P. Gordon","raw_affiliation_strings":["NASA  Goddard Inst. for Space Studies New York, N.Y., United States"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NASA  Goddard Inst. for Space Studies New York, N.Y., United States","institution_ids":["https://openalex.org/I116578957"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5020217916"],"corresponding_institution_ids":["https://openalex.org/I116578957"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.08408163,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"20","issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11323","display_name":"Gamma-ray bursts and supernovae","score":0.9970999956130981,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11323","display_name":"Gamma-ray bursts and supernovae","score":0.9970999956130981,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.0017000000225380063,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10818","display_name":"Astrophysics and Cosmic Phenomena","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/type-i-supernovae","display_name":"Type I supernovae","score":0.9610000252723694},{"id":"https://openalex.org/keywords/supernova-spectra","display_name":"supernova spectra","score":0.953000009059906},{"id":"https://openalex.org/keywords/emission-line-spectra","display_name":"emission-line spectra","score":0.7770000100135803},{"id":"https://openalex.org/keywords/absorption-spectra","display_name":"absorption spectra","score":0.7440000176429749},{"id":"https://openalex.org/keywords/circumstellar-envelopes","display_name":"circumstellar envelopes","score":0.7870000004768372},{"id":"https://openalex.org/keywords/spectral-line-identification","display_name":"spectral line identification","score":0.7200000286102295},{"id":"https://openalex.org/keywords/line-intensity","display_name":"line intensities","score":0.5839999914169312}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8717405796051025},{"id":"https://openalex.org/C127592171","wikidata":"https://www.wikidata.org/wiki/Q3937","display_name":"Supernova","level":2,"score":0.8161233067512512},{"id":"https://openalex.org/C4839761","wikidata":"https://www.wikidata.org/wiki/Q212111","display_name":"Spectral line","level":2,"score":0.7909808158874512},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.7588965892791748},{"id":"https://openalex.org/C96141758","wikidata":"https://www.wikidata.org/wiki/Q216817","display_name":"Emission spectrum","level":3,"score":0.7275601625442505},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.5640084147453308},{"id":"https://openalex.org/C119824511","wikidata":"https://www.wikidata.org/wiki/Q13553575","display_name":"Absorption spectroscopy","level":2,"score":0.5124297738075256},{"id":"https://openalex.org/C125287762","wikidata":"https://www.wikidata.org/wiki/Q1758948","display_name":"Absorption (acoustics)","level":2,"score":0.4403059184551239},{"id":"https://openalex.org/C2781052500","wikidata":"https://www.wikidata.org/wiki/Q2230313","display_name":"Shell (structure)","level":2,"score":0.43946024775505066},{"id":"https://openalex.org/C12287442","wikidata":"https://www.wikidata.org/wiki/Q105902","display_name":"Luminosity","level":3,"score":0.418436735868454},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.32284218072891235},{"id":"https://openalex.org/C98444146","wikidata":"https://www.wikidata.org/wiki/Q318","display_name":"Galaxy","level":2,"score":0.22753369808197021},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.11421835422515869},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.08322367072105408},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:808924946","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19720056220","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Astronomy and Astrophysics","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1979570690","https://openalex.org/W235247103","https://openalex.org/W1576962162","https://openalex.org/W2013541619","https://openalex.org/W2285469329","https://openalex.org/W2073149974","https://openalex.org/W2013093615","https://openalex.org/W1343572","https://openalex.org/W32411963","https://openalex.org/W2025264841"],"abstract_inverted_index":{"In":[0],"the":[1,14,25,47,52,60,63,67,75,79,85,96,127,136,149,157],"late":[2],"stages":[3,28],"of":[4,57,59,72,74,78,84,98,105,152,156],"type":[5],"I":[6],"supernovae":[7],"evolution":[8],"(t":[9],"greater":[10],"than":[11],"50":[12],"days)":[13],"spectrum":[15,38,44,104,119],"is":[16,30,39,92,115,120,130,139],"without":[17],"doubt":[18],"an":[19,35,112],"emission":[20,36,108,128],"line":[21,37,86],"spectrum,":[22],"but":[23],"in":[24,51,66],"early":[26],"it":[29],"difficult":[31],"to":[32,94,145],"tell":[33],"if":[34],"observed,":[40],"or":[41],"a":[42,103,153],"continuum":[43],"modified":[45],"by":[46,111,148],"overlaying":[48,113],"absorption":[49,114,118],"formed":[50],"outer":[53],"layers.":[54],"The":[55,117],"mechanism":[56],"formation":[58],"observed":[61,137],"spectra,":[62],"physical":[64],"conditions":[65],"shell,":[68,76],"different":[69],"possible":[70],"sources":[71],"heating":[73],"identification":[77,125],"lines,":[80],"and":[81,132],"theoretical":[82,150],"computations":[83,151],"intensities":[87],"are":[88],"discussed.":[89],"An":[90,123],"attempt":[91],"made":[93],"interpret":[95],"set":[97],"spectra":[99,138],"assuming":[100],"that":[101],"widely":[106],"broadened":[107],"lines":[109,129],"truncated":[110],"seen.":[116],"first":[121],"studied.":[122],"for":[126],"proposed,":[131],"their":[133],"intensity":[134],"on":[135],"tentatively":[140],"estimated.":[141],"These":[142],"identifications":[143],"have":[144],"be":[146],"justified":[147],"model":[154],"shell.":[158]},"counts_by_year":[],"updated_date":"2026-11-01T11:40:01.658920","created_date":"2016-06-24T00:00:00"}
