{"created":"2023-06-20T15:28:23.414181+00:00","id":7434,"links":{},"metadata":{"_buckets":{"deposit":"810c0922-9c4d-4136-87bf-935b07f4aaeb"},"_deposit":{"created_by":3,"id":"7434","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7434"},"status":"published"},"_oai":{"id":"oai:ouj.repo.nii.ac.jp:00007434","sets":["470:394:441"]},"author_link":["9312","9313"],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"112","bibliographicPageStart":"95","bibliographicVolumeNumber":"19","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型が脈動周期の光度変化に重なって長周期の光度変化を示すのに対して、RVa型にはそのような長周期変化は見られない。また、この変光星は可視域のスペクトルをもとに、酸素過剰なAグループと炭素過剰なB，Cグループに細分類されている。\n　われわれは、国立天文台堂平観測所の91cm反射望遠鏡を用いて、おうし座RV型変光星の多色偏光観測を行った。観測された17個の星の内、4個の星に対してはすでに星間偏光成分を取り除いて固有偏光成分を求めている。\n　本論文では、さらに2個の星、おうし座RV星とヘルクレス座AC星の固有偏光成分の特徴を報告する。星間偏光成分はnear-neighbor法を一部変えた方法で求めた。ヘルクレス座AC星に対して求めた星間偏光成分の方が信頼度は高い。\n　おうし座RV星に対する星間偏光成分は小さいので、その特徴は観測された偏光に対するものと大きくは違わない。この星の固有偏光成分は、脈動周期に伴う時間変動とともに長周期光度変化に伴う変動も行う。この星の固有偏光成分の偏光度は中間の波長域で極大値をとり、Aグループの星の傾向に従う。ヘルクレス座AC星の固有偏光成分は、脈動周期に伴う時間変動とともに公転周期に伴う変動も行う。この星の固有偏光成分の偏光度は、短波長側で波長の滅少とともに増加するが、これはこの星の星周圏ダストが2種類の異なるサイズをもっことを示唆している。","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 RVa and RVb groups. 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. On the basis of spectroscopic characteristics in an optical region the RV Tauri stars are divided into the oxygen-rich group, the group A, and the carbon-rich group, the group B and the group C.\n　We raade the multicolor polarimetric observations of 17 RV Tauri stars, using the 91cm reflector at the Dodaira Station on the National Astronomical Observatory. Among the 17 stars we have already obtained the intrinsic polarizations of 4 stars by removing the interstellar polarizations.\n　In this paper we report the intrinsic polarizations of other two stars, RV Tau and AC Her. The interstellar polarizations are determined by the modified nearneighbor method. The values of interstellar polarization for RV Tau is not so reliable than those for AC Her.\n　The intestellar polarization for RV Tau is small, so that the results does not differ markedly from those for the observed polarization. RV Tau shows the time variation of intrinsic polarization not only with the formal period but also with the long-term brightness period. The intrinsic degree of linear polarization of RV Tau conform to the wavelength dependence to take a maximum at an intermediate wavelength, which is the tendency for the group A. AC Her shows the time variation of interstellar polrizazion not only with the formal period but also with the orbitai period. The intrinsic degree of linear polarizatin of AC Her has a tendency to decrease with wavelength for shorter wavelength region, which indicates that circumstellar dust has two different grain size distributions."}]},"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":"9312","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yoshioka, Kazuo","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"9313","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_19-95-112.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"NO_19-95-112","url":"https://ouj.repo.nii.ac.jp/record/7434/files/NO_19-95-112.pdf"},"version_id":"f1d7be83-b687-4787-aa01-38d8137ffa2e"}]},"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":"おうし座RV星とヘルクレス座AC星の固有偏光の特徴について","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"おうし座RV星とヘルクレス座AC星の固有偏光の特徴について"},{"subitem_title":"The Characteristics of Intrinsic Polarization for RV Tau and AC Her","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"3","path":["441"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-06-14"},"publish_date":"2013-06-14","publish_status":"0","recid":"7434","relation_version_is_last":true,"title":["おうし座RV星とヘルクレス座AC星の固有偏光の特徴について"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-20T16:17:14.494572+00:00"}