On the UV-excesses of cepheid variables
On the basis of the intrinsic (U – B)0 colours of the cepheid variables, found by the authors, the UV‐excesses in the maximum and minimum light δ(U – B)max and δ(U – B)min are defined. It is found out that the UV‐excesses in the maximum light δ(U – B)min increase with the period P (Fig. 2), but ther...
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| Veröffentlicht in: | Astron. Nachr., v. 295, no. 5, pp. 207-216 v. 295, no. 5, pp. 207-216, 1974, Vol.295 (5), p.207-216 |
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| container_title | Astron. Nachr., v. 295, no. 5, pp. 207-216 |
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| creator | Nikolov, N. S. Ivanov, G. R. |
| description | On the basis of the intrinsic (U – B)0 colours of the cepheid variables, found by the authors, the UV‐excesses in the maximum and minimum light δ(U – B)max and δ(U – B)min are defined. It is found out that the UV‐excesses in the maximum light δ(U – B)min increase with the period P (Fig. 2), but there is no correlation between δ(U – B)min and log P. A correlation between δ(U – B)max and the “amplitude defects” fB is also determined. These results in connection with some other considerations, as well as the possible causes of the UV‐excesses, are discussed.
Auf Grund der von den Autoren gefundenen unverfärbten Farben (U – B)0 der Delta‐Cephei‐Veränderlichen werden die UV‐excesse bei maximaler und minimaler Helligkeit δ(U – B)max und δ(U – B)min bestimmt. Es wird festgestellt, daß die UV‐Exzesse bei maximaler Helligkeit δ(U – B)max mit der Periode P (Abb. 2) zunehmen, jedoch keine Korrelation zwischen δ(U – B)min und log P besteht. Es wird auch eine Korrelation zwischen δ(U – B)max und den „Amplitude‐Fehlern”︁ fB festgestellt. Diese Ergebnisse in Verbindung mit einigen anderen Erwägungen und den möglichen Ursachen der UV‐Exzesse werden eingehend betrachtet. |
| doi_str_mv | 10.1002/asna.19742950503 |
| format | Article |
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Auf Grund der von den Autoren gefundenen unverfärbten Farben (U – B)0 der Delta‐Cephei‐Veränderlichen werden die UV‐excesse bei maximaler und minimaler Helligkeit δ(U – B)max und δ(U – B)min bestimmt. Es wird festgestellt, daß die UV‐Exzesse bei maximaler Helligkeit δ(U – B)max mit der Periode P (Abb. 2) zunehmen, jedoch keine Korrelation zwischen δ(U – B)min und log P besteht. Es wird auch eine Korrelation zwischen δ(U – B)max und den „Amplitude‐Fehlern”︁ fB festgestellt. Diese Ergebnisse in Verbindung mit einigen anderen Erwägungen und den möglichen Ursachen der UV‐Exzesse werden eingehend betrachtet.</description><identifier>ISSN: 0004-6337</identifier><identifier>EISSN: 1521-3994</identifier><identifier>DOI: 10.1002/asna.19742950503</identifier><language>eng</language><publisher>Altona: WILEY-VCH Verlag</publisher><subject>640102 --Physics Research--Astrophysics & Cosmology--Stars ; CEPHEIDS-- ULTRAVIOLET SPECTRA ; COLOR ; N56200 --Physics (Astrophysics & Cosmology)--Stars ; PHOTOMETRY ; SPECTROPHOTOMETRY ; ULTRAVIOLET RADIATION</subject><ispartof>Astron. Nachr., v. 295, no. 5, pp. 207-216, 1974, Vol.295 (5), p.207-216</ispartof><rights>Copyright © 1974 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2303-e50aab35cee0eb8874e913598c13717ba192a820dbf377ec19560f08836fc83d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fasna.19742950503$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fasna.19742950503$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,881,1411,4010,27900,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/4056547$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Nikolov, N. S.</creatorcontrib><creatorcontrib>Ivanov, G. R.</creatorcontrib><creatorcontrib>Peoples Astronomical Observatory, Varna (Bulgaria)</creatorcontrib><creatorcontrib>Bulgarian Academy of Science, Sofia. Department of Astronomy</creatorcontrib><title>On the UV-excesses of cepheid variables</title><title>Astron. Nachr., v. 295, no. 5, pp. 207-216</title><addtitle>Astron. Nachr</addtitle><description>On the basis of the intrinsic (U – B)0 colours of the cepheid variables, found by the authors, the UV‐excesses in the maximum and minimum light δ(U – B)max and δ(U – B)min are defined. It is found out that the UV‐excesses in the maximum light δ(U – B)min increase with the period P (Fig. 2), but there is no correlation between δ(U – B)min and log P. A correlation between δ(U – B)max and the “amplitude defects” fB is also determined. These results in connection with some other considerations, as well as the possible causes of the UV‐excesses, are discussed.
Auf Grund der von den Autoren gefundenen unverfärbten Farben (U – B)0 der Delta‐Cephei‐Veränderlichen werden die UV‐excesse bei maximaler und minimaler Helligkeit δ(U – B)max und δ(U – B)min bestimmt. Es wird festgestellt, daß die UV‐Exzesse bei maximaler Helligkeit δ(U – B)max mit der Periode P (Abb. 2) zunehmen, jedoch keine Korrelation zwischen δ(U – B)min und log P besteht. Es wird auch eine Korrelation zwischen δ(U – B)max und den „Amplitude‐Fehlern”︁ fB festgestellt. Diese Ergebnisse in Verbindung mit einigen anderen Erwägungen und den möglichen Ursachen der UV‐Exzesse werden eingehend betrachtet.</description><subject>640102 --Physics Research--Astrophysics & Cosmology--Stars</subject><subject>CEPHEIDS-- ULTRAVIOLET SPECTRA</subject><subject>COLOR</subject><subject>N56200 --Physics (Astrophysics & Cosmology)--Stars</subject><subject>PHOTOMETRY</subject><subject>SPECTROPHOTOMETRY</subject><subject>ULTRAVIOLET RADIATION</subject><issn>0004-6337</issn><issn>1521-3994</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1974</creationdate><recordtype>article</recordtype><recordid>eNqFkDFPwzAQRi0EEqWwM0YsTClnXxzbA0OpSouo2gEKbJbjXtRASao4gvbf0yoIwcR0Oum9b3iMnXPocQBx5ULpetyoRBgJEvCAdbgUPEZjkkPWAYAkThHVMTsJ4XX3mlTwDruclVGzpGj-FNPGUwgUoiqPPK2XVCyiD1cXLltROGVHuVsFOvu-XTa_HT4OxvFkNrob9CexFwgYkwTnMpSeCCjTWiVkOEqjPUfFVea4EU4LWGQ5KkWeG5lCDlpjmnuNC-yyi3a3Ck1hgy8a8ktflSX5xiYgU5moHQQt5OsqhJpyu66Ld1dvLQe7r2H3NeyvGjvlulU-ixVt_-Vt_2Ha_-vHrV-EhjY_vqvfbKpQSfs8Hdk0uTHq_mVix_gFu6RxlA</recordid><startdate>1974</startdate><enddate>1974</enddate><creator>Nikolov, N. S.</creator><creator>Ivanov, G. R.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>1974</creationdate><title>On the UV-excesses of cepheid variables</title><author>Nikolov, N. S. ; Ivanov, G. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2303-e50aab35cee0eb8874e913598c13717ba192a820dbf377ec19560f08836fc83d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1974</creationdate><topic>640102 --Physics Research--Astrophysics & Cosmology--Stars</topic><topic>CEPHEIDS-- ULTRAVIOLET SPECTRA</topic><topic>COLOR</topic><topic>N56200 --Physics (Astrophysics & Cosmology)--Stars</topic><topic>PHOTOMETRY</topic><topic>SPECTROPHOTOMETRY</topic><topic>ULTRAVIOLET RADIATION</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nikolov, N. S.</creatorcontrib><creatorcontrib>Ivanov, G. R.</creatorcontrib><creatorcontrib>Peoples Astronomical Observatory, Varna (Bulgaria)</creatorcontrib><creatorcontrib>Bulgarian Academy of Science, Sofia. Department of Astronomy</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Astron. Nachr., v. 295, no. 5, pp. 207-216</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nikolov, N. S.</au><au>Ivanov, G. R.</au><aucorp>Peoples Astronomical Observatory, Varna (Bulgaria)</aucorp><aucorp>Bulgarian Academy of Science, Sofia. Department of Astronomy</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>On the UV-excesses of cepheid variables</atitle><jtitle>Astron. Nachr., v. 295, no. 5, pp. 207-216</jtitle><addtitle>Astron. Nachr</addtitle><date>1974</date><risdate>1974</risdate><volume>295</volume><issue>5</issue><spage>207</spage><epage>216</epage><pages>207-216</pages><issn>0004-6337</issn><eissn>1521-3994</eissn><abstract>On the basis of the intrinsic (U – B)0 colours of the cepheid variables, found by the authors, the UV‐excesses in the maximum and minimum light δ(U – B)max and δ(U – B)min are defined. It is found out that the UV‐excesses in the maximum light δ(U – B)min increase with the period P (Fig. 2), but there is no correlation between δ(U – B)min and log P. A correlation between δ(U – B)max and the “amplitude defects” fB is also determined. These results in connection with some other considerations, as well as the possible causes of the UV‐excesses, are discussed.
Auf Grund der von den Autoren gefundenen unverfärbten Farben (U – B)0 der Delta‐Cephei‐Veränderlichen werden die UV‐excesse bei maximaler und minimaler Helligkeit δ(U – B)max und δ(U – B)min bestimmt. Es wird festgestellt, daß die UV‐Exzesse bei maximaler Helligkeit δ(U – B)max mit der Periode P (Abb. 2) zunehmen, jedoch keine Korrelation zwischen δ(U – B)min und log P besteht. Es wird auch eine Korrelation zwischen δ(U – B)max und den „Amplitude‐Fehlern”︁ fB festgestellt. Diese Ergebnisse in Verbindung mit einigen anderen Erwägungen und den möglichen Ursachen der UV‐Exzesse werden eingehend betrachtet.</abstract><cop>Altona</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/asna.19742950503</doi><tpages>10</tpages></addata></record> |
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| identifier | ISSN: 0004-6337 |
| ispartof | Astron. Nachr., v. 295, no. 5, pp. 207-216, 1974, Vol.295 (5), p.207-216 |
| issn | 0004-6337 1521-3994 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | 640102 --Physics Research--Astrophysics & Cosmology--Stars CEPHEIDS-- ULTRAVIOLET SPECTRA COLOR N56200 --Physics (Astrophysics & Cosmology)--Stars PHOTOMETRY SPECTROPHOTOMETRY ULTRAVIOLET RADIATION |
| title | On the UV-excesses of cepheid variables |
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