{"id":"https://openalex.org/W7166033641","doi":"https://doi.org/10.3847/psj/ae7a65","title":"A Potential Signature of HD 7977\u2019s Passage among Observed Long-period Comet Orbits","display_name":"A Potential Signature of HD 7977\u2019s Passage among Observed Long-period Comet Orbits","publication_year":2026,"publication_date":"2026-07-01","ids":{"openalex":"https://openalex.org/W7166033641","doi":"https://doi.org/10.3847/psj/ae7a65"},"language":"en","primary_location":{"id":"doi:10.3847/psj/ae7a65","doi":"https://doi.org/10.3847/psj/ae7a65","is_oa":true,"landing_page_url":"https://doi.org/10.3847/psj/ae7a65","pdf_url":"https://iopscience.iop.org/article/10.3847/PSJ/ae7a65/pdf","source":{"id":"https://openalex.org/S4210170572","display_name":"The Planetary Science Journal","issn_l":"2632-3338","issn":["2632-3338"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","jufo-1","norway-1","oarl","poland-20","russia-white-list-3"],"host_organization":"https://openalex.org/P4310311669","host_organization_name":"Institute of Physics","host_organization_lineage":["https://openalex.org/P4310311669"],"host_organization_lineage_names":["Institute of Physics"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Planetary Science Journal","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["arxiv","crossref","datacite","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://iopscience.iop.org/article/10.3847/PSJ/ae7a65/pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5056147207","display_name":"Nathan A. Kaib","orcid":"https://orcid.org/0000-0001-5272-5888","observed_orcids":["https://orcid.org/0000-0001-5272-5888"]},"institutions":[{"id":"https://openalex.org/I1302918504","display_name":"Planetary Science Institute","ror":"https://ror.org/05vvg9554","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I1302918504"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nathan A. Kaib","raw_affiliation_strings":["Planetary Science Institute"],"raw_orcid":"https://orcid.org/0000-0001-5272-5888","affiliations":[{"raw_affiliation_string":"Planetary Science Institute","institution_ids":["https://openalex.org/I1302918504"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5045650283","display_name":"Sean N. Raymond","orcid":"https://orcid.org/0000-0001-8974-0758","observed_orcids":["https://orcid.org/0000-0001-8974-0758"]},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I15057530","display_name":"Universit\u00e9 de Bordeaux","ror":"https://ror.org/057qpr032","country_code":"FR","type":"education","lineage":["https://openalex.org/I15057530"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Sean N. Raymond","raw_affiliation_strings":["CNRS and Universit\u00e9 de Bordeaux"],"raw_orcid":"https://orcid.org/0000-0001-8974-0758","affiliations":[{"raw_affiliation_string":"CNRS and Universit\u00e9 de Bordeaux","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I15057530"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1800,"currency":"USD","value_usd":1800},"apc_paid":{"value":1800,"currency":"USD","value_usd":1800},"fwci":2.889,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.91387232,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"7","issue":"7","first_page":"160","last_page":"160"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.9761000275611877,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.9761000275611877,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10039","display_name":"Stellar, planetary, and galactic studies","score":0.01850000023841858,"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/T11701","display_name":"Space Satellite Systems and Control","score":0.0013000000035390258,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/long-period-comets","display_name":"long-period comets","score":0.9959999918937683},{"id":"https://openalex.org/keywords/oort-cloud","display_name":"Oort cloud","score":0.9700000286102295},{"id":"https://openalex.org/keywords/comet-showers","display_name":"comet showers","score":0.6489999890327454},{"id":"https://openalex.org/keywords/stellar-flybys","display_name":"stellar flybys","score":0.3240000009536743}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8442999720573425},{"id":"https://openalex.org/C34528125","wikidata":"https://www.wikidata.org/wiki/Q931727","display_name":"Galactic tide","level":5,"score":0.6402000188827515},{"id":"https://openalex.org/C555520305","wikidata":"https://www.wikidata.org/wiki/Q321","display_name":"Milky Way","level":3,"score":0.6373000144958496},{"id":"https://openalex.org/C94081185","wikidata":"https://www.wikidata.org/wiki/Q3559","display_name":"Comet","level":2,"score":0.6279000043869019},{"id":"https://openalex.org/C44870925","wikidata":"https://www.wikidata.org/wiki/Q37547","display_name":"Astrophysics","level":1,"score":0.613099992275238},{"id":"https://openalex.org/C156562940","wikidata":"https://www.wikidata.org/wiki/Q2441216","display_name":"Interstellar comet","level":3,"score":0.6000000238418579},{"id":"https://openalex.org/C539450922","wikidata":"https://www.wikidata.org/wiki/Q544","display_name":"Solar System","level":2,"score":0.5924999713897705},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.5508999824523926},{"id":"https://openalex.org/C79974875","wikidata":"https://www.wikidata.org/wiki/Q483639","display_name":"Cloud computing","level":2,"score":0.5491999983787537},{"id":"https://openalex.org/C86021447","wikidata":"https://www.wikidata.org/wiki/Q272447","display_name":"Molecular cloud","level":3,"score":0.45190000534057617},{"id":"https://openalex.org/C177918212","wikidata":"https://www.wikidata.org/wiki/Q803623","display_name":"Perturbation (astronomy)","level":2,"score":0.45019999146461487},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.44449999928474426},{"id":"https://openalex.org/C184050105","wikidata":"https://www.wikidata.org/wiki/Q273163","display_name":"Isotropy","level":2,"score":0.40540000796318054},{"id":"https://openalex.org/C97784730","wikidata":"https://www.wikidata.org/wiki/Q272626","display_name":"Orbital elements","level":2,"score":0.3589000105857849},{"id":"https://openalex.org/C27638517","wikidata":"https://www.wikidata.org/wiki/Q184274","display_name":"Celestial mechanics","level":2,"score":0.33570000529289246},{"id":"https://openalex.org/C150846664","wikidata":"https://www.wikidata.org/wiki/Q7602306","display_name":"Stars","level":2,"score":0.33239999413490295},{"id":"https://openalex.org/C85725439","wikidata":"https://www.wikidata.org/wiki/Q466686","display_name":"Anisotropy","level":2,"score":0.2973000109195709},{"id":"https://openalex.org/C68709404","wikidata":"https://www.wikidata.org/wiki/Q1134475","display_name":"Flux (metallurgy)","level":2,"score":0.29280000925064087},{"id":"https://openalex.org/C183582522","wikidata":"https://www.wikidata.org/wiki/Q3239165","display_name":"Galactic plane","level":3,"score":0.2766000032424927},{"id":"https://openalex.org/C176641082","wikidata":"https://www.wikidata.org/wiki/Q2446767","display_name":"Spectral signature","level":2,"score":0.2736999988555908},{"id":"https://openalex.org/C100905312","wikidata":"https://www.wikidata.org/wiki/Q206717","display_name":"Planetary system","level":3,"score":0.2669000029563904},{"id":"https://openalex.org/C2779696439","wikidata":"https://www.wikidata.org/wiki/Q7512811","display_name":"Signature (topology)","level":2,"score":0.25699999928474426},{"id":"https://openalex.org/C110363677","wikidata":"https://www.wikidata.org/wiki/Q4360","display_name":"Pulsar","level":2,"score":0.25429999828338623}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3847/psj/ae7a65","doi":"https://doi.org/10.3847/psj/ae7a65","is_oa":true,"landing_page_url":"https://doi.org/10.3847/psj/ae7a65","pdf_url":"https://iopscience.iop.org/article/10.3847/PSJ/ae7a65/pdf","source":{"id":"https://openalex.org/S4210170572","display_name":"The Planetary Science Journal","issn_l":"2632-3338","issn":["2632-3338"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","jufo-1","norway-1","oarl","poland-20","russia-white-list-3"],"host_organization":"https://openalex.org/P4310311669","host_organization_name":"Institute of Physics","host_organization_lineage":["https://openalex.org/P4310311669"],"host_organization_lineage_names":["Institute of Physics"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Planetary Science Journal","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2606.25069","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2606.25069","pdf_url":"https://arxiv.org/pdf/2606.25069","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:HAL:hal-05760830v1","doi":null,"is_oa":true,"landing_page_url":"https://hal.science/hal-05760830v1/document","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4405252976","host_organization_name":"Centre pour la Communication Scientifique Directe","host_organization_lineage":["https://openalex.org/I4405252976"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Planetary Science Journal, 2026, 7 (7), pp.160. &#x27E8;10.3847/PSJ/ae7a65&#x27E9;","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:doaj.org/article:a9935c532a9d49d59c2394c4201469cd","doi":null,"is_oa":false,"landing_page_url":"https://doaj.org/article/a9935c532a9d49d59c2394c4201469cd","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"The Planetary Science Journal, Vol 7, Iss 7, p 160 (2026)","raw_type":"article"},{"id":"doi:10.48550/arxiv.2606.25069","doi":"https://doi.org/10.48550/arxiv.2606.25069","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2606.25069","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"doi:10.3847/psj/ae7a65","doi":"https://doi.org/10.3847/psj/ae7a65","is_oa":true,"landing_page_url":"https://doi.org/10.3847/psj/ae7a65","pdf_url":"https://iopscience.iop.org/article/10.3847/PSJ/ae7a65/pdf","source":{"id":"https://openalex.org/S4210170572","display_name":"The Planetary Science Journal","issn_l":"2632-3338","issn":["2632-3338"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","jufo-1","norway-1","oarl","poland-20","russia-white-list-3"],"host_organization":"https://openalex.org/P4310311669","host_organization_name":"Institute of Physics","host_organization_lineage":["https://openalex.org/P4310311669"],"host_organization_lineage_names":["Institute of Physics"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Planetary Science Journal","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G4899889072","display_name":null,"funder_award_id":"80NSSC24K1874","funder_id":"https://openalex.org/F4320306101","funder_display_name":"National Aeronautics and Space Administration"}],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"},{"id":"https://openalex.org/F4320321519","display_name":"Centre National d\u2019Etudes Spatiales","ror":"https://ror.org/04h1h0y33"},{"id":"https://openalex.org/F4320322892","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7166033641.pdf","grobid_xml":"https://content.openalex.org/works/W7166033641.grobid-xml"},"referenced_works_count":49,"referenced_works":["https://openalex.org/W1907675492","https://openalex.org/W1968868182","https://openalex.org/W1974042567","https://openalex.org/W1978779077","https://openalex.org/W1987350894","https://openalex.org/W1989033868","https://openalex.org/W1994708987","https://openalex.org/W1995675480","https://openalex.org/W1995840180","https://openalex.org/W2004327796","https://openalex.org/W2004574482","https://openalex.org/W2005909763","https://openalex.org/W2017712849","https://openalex.org/W2020478103","https://openalex.org/W2041118223","https://openalex.org/W2049281914","https://openalex.org/W2049586424","https://openalex.org/W2066392511","https://openalex.org/W2071892532","https://openalex.org/W2074176657","https://openalex.org/W2081356073","https://openalex.org/W2086084653","https://openalex.org/W2093188944","https://openalex.org/W2148249747","https://openalex.org/W2151778254","https://openalex.org/W2156042748","https://openalex.org/W2158992122","https://openalex.org/W2159437390","https://openalex.org/W2159714423","https://openalex.org/W2167131971","https://openalex.org/W2322066406","https://openalex.org/W2908443721","https://openalex.org/W2932181626","https://openalex.org/W2991581357","https://openalex.org/W3022974210","https://openalex.org/W3026466284","https://openalex.org/W3048920319","https://openalex.org/W3119782452","https://openalex.org/W4220818938","https://openalex.org/W4244613192","https://openalex.org/W4281694390","https://openalex.org/W4291512942","https://openalex.org/W4383198496","https://openalex.org/W4386198512","https://openalex.org/W4391810824","https://openalex.org/W4392437805","https://openalex.org/W4410458450","https://openalex.org/W4414321054","https://openalex.org/W4417153386"],"related_works":["https://openalex.org/W1580898879","https://openalex.org/W2932181626","https://openalex.org/W1840543629","https://openalex.org/W3104705516","https://openalex.org/W4231742419","https://openalex.org/W2897397182","https://openalex.org/W2062264888","https://openalex.org/W1989695512","https://openalex.org/W6940957503","https://openalex.org/W2009036205"],"abstract_inverted_index":{"Abstract":[0],"It":[1],"is":[2,14,128,189,208],"generally":[3],"presumed":[4],"that":[5,18,78,101,152,202,221,241],"the":[6,10,15,26,30,38,47,73,109,125,134,153,168,177,192,203,214,224,242],"tidal":[7],"field":[8],"of":[9,49,54,106,118,157,176,195,223,235,254],"Milky":[11],"Way\u2019s":[12],"disk":[13],"main":[16],"perturbation":[17],"has":[19],"driven":[20],"observed":[21,79,98,154,205],"long-period":[22],"comets":[23],"(LPCs)":[24],"from":[25],"Oort":[27,39,126,136,225],"cloud":[28,40,127,137],"into":[29],"inner":[31,110],"solar":[32,111,187],"system.":[33],"The":[34,116],"tide\u2019s":[35],"influence":[36],"on":[37],"should":[41,228],"produce":[42],"a":[43,62,104,142,184,196,233],"distinct":[44],"anisotropy":[45],"in":[46],"arguments":[48],"perihelion":[50],"(":[51,61],"\u03c9":[52,155],")":[53,63],"dynamically":[55,80],"new":[56,81,119,158],"LPCs":[57,82,100,120,161],"with":[58],"semimajor":[59],"axes":[60],"over":[64],"10":[65],"4":[66],"au.":[67,256],"Simulating":[68],"LPC":[69,206,238],"production":[70],"dominated":[71],"by":[72,232],"Galactic":[74],"tide,":[75],"we":[76,149],"find":[77],"are":[83],"more":[84],"isotropic":[85],"than":[86,133],"expected.":[87],"Meanwhile,":[88],"our":[89,186],"simulation":[90],"exhibits":[91],"much":[92,129],"better":[93],"agreement":[94],"between":[95],"simulated":[96],"and":[97,159],"\u201creturning\u201d":[99],"have":[102],"made":[103],"handful":[105],"passages":[107],"through":[108],"system":[112,188],"prior":[113],"to":[114],"discovery.":[115],"isotropy":[117],"can":[121,162],"be":[122,164,229],"explained":[123],"if":[124,167],"less":[130],"centrally":[131],"concentrated":[132],"conventional":[135],"formation":[138],"model":[139],"predicts.":[140],"However,":[141],"second":[143],"possibility":[144],"also":[145,219],"exists.":[146],"Additional":[147],"simulations":[148,200],"perform":[150],"show":[151],"distributions":[156],"returning":[160],"both":[163],"well":[165],"replicated":[166],"star":[169],"HD":[170,250],"7977":[171,251],"passed":[172],"within":[173],"\u223c6000\u201310,000":[174,255],"au":[175],"Sun":[178],"\u223c2.5":[179],"Myr":[180],"ago.":[181],"In":[182],"such":[183],"scenario,":[185],"still":[190],"undergoing":[191],"later":[193],"stages":[194],"comet":[197],"shower.":[198],"These":[199],"imply":[201],"modern":[204],"flux":[207],"approximately":[209],"twice":[210],"as":[211,213],"high":[212],"longer-term":[215],"(tide-dominated)":[216],"rate.":[217],"This":[218],"implies":[220],"estimates":[222],"cloud\u2019s":[226],"population":[227],"revised":[230],"downward":[231],"factor":[234],"\u223c2.":[236],"Our":[237],"analysis":[239],"predicts":[240],"upcoming":[243],"Gaia":[244],"data":[245],"release":[246],"will":[247],"favor":[248],"an":[249],"impact":[252],"parameter":[253]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-06-27T00:00:00"}
