{"created":"2023-06-20T15:28:21.972474+00:00","id":7401,"links":{},"metadata":{"_buckets":{"deposit":"22ff011f-a9da-4042-8410-5b29dae10743"},"_deposit":{"created_by":3,"id":"7401","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7401"},"status":"published"},"_oai":{"id":"oai:ouj.repo.nii.ac.jp:00007401","sets":["470:394:446"]},"author_link":["9240","9241"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"228","bibliographicPageStart":"211","bibliographicVolumeNumber":"16","bibliographic_titles":[{"bibliographic_title":"放送大学研究年報"},{"bibliographic_title":"Journal of the University of the Air","bibliographic_titleLang":"en"}]}]},"item_10002_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"　おうし座RV型星は，主極小と副極小を交互にくり返す光度変化に特徴がある半規則的な脈動変光星である．この変光星は，光度変化をもとに，RVa型とRVb型に細分類されており，RVb型は脈動周期の光度変化に重なって長周期の光度変化が見られるのに対して，RVa型ではそのような長周期変化は見られない．\n　われわれは，国立天文台堂平観測所の91cm反射望遠鏡の多色偏光測光装置を用いて，この星の多色偏光測光観測を行っている．\n　その結果，現在までに観測された17個のおうし座RV型星の中で，ふたご座SU星，いっかくじゅう座U星，おうし座RV星の3個の星で，偏光が長周期の時間変動をしていることを検出した．これら3個の星はすべてRVb型である．そして，観測された偏光の長周期時間変動は周期的で，その周期は長周期光度変化の周期と大体一致しているようである．この長周期の時間変動はおうし座RV星のほうが，いっかくじゅう座U星よりも顕著である．一方，観測誤差が大きいので，ふたご座SU星に対しては，長周期時間変動の大きさについては，明確な結論は下せない．さらに，偏光の長周期時間変動の特徴から判断すると，RVb現象の説明の1つとして提案されてる星周圏ダスト殻を伴う伴星による単純な掩蔽によっては，この時間変動が引き起こされてはいないようである．","subitem_description_type":"Abstract"}]},"item_10002_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10019636","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0911-4505","subitem_source_identifier_type":"ISSN"}]},"item_10002_textarea_25":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_textarea_language":"en","subitem_textarea_value":"　The RV Tauri stars are semiregular variables whose light curves are characterized by alternate deep and shallow minima. On the basis of light curves the RV Tauri stars are divided into the RVa group and the RVb group. The RVa group is characterized by a relatively regular light curve, while the RVb group is characterized by a superimposition of a long-term variation.\n　The author has been making the multicolor polarimetric observations of RV Tauri stars, using the 91cm reflector with the multi-channel polarimeter at the Dodaira Station of the Natlonal Astronomical Observatory.\n　Among 17 stars observed to date, showed three stars, SU Gem, U Mon, and RV Tau, long-term time variations of polarization. All these stars belong to the RVb group, and the periods of the long-term variations of polarization seem to be close to the long-term brightness periods. The long-term variation of polarization for RV Tau is more conspicuous than that for U Mon, while a definite conclusion cannot be obtained for SU Gem due to a large observational scatter. Furthermore, it seems that the long-term variation of polarization is not caused by the simple eclipse by a comparison star with a circumstellar dust shell, which has been suggested as one of the explanations for the RVb phenomenon."}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"吉岡, 一男"},{"creatorName":"ヨシオカ, カズオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"9240","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshioka, Kazuo","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"9241","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2013-06-14"}],"displaytype":"detail","filename":"NO_16-211-228.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"NO_16-211-228","url":"https://ouj.repo.nii.ac.jp/record/7401/files/NO_16-211-228.pdf"},"version_id":"cb437f06-5ae6-412e-beea-205150c7538b"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"3個のおうし座RV型星, ふたご座SU星, いっかくじゅう座U星, おうし座RV星の偏光の長周期変動","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"3個のおうし座RV型星, ふたご座SU星, いっかくじゅう座U星, おうし座RV星の偏光の長周期変動"},{"subitem_title":"Long-Term Periodic Variations in Polarization of Three RV Tauri Stars, Su Gem, U Mon, and RV Tau","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"3","path":["446"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-06-14"},"publish_date":"2013-06-14","publish_status":"0","recid":"7401","relation_version_is_last":true,"title":["3個のおうし座RV型星, ふたご座SU星, いっかくじゅう座U星, おうし座RV星の偏光の長周期変動"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-20T16:16:49.867201+00:00"}