TWO INDEPENDENT PHOTOELECTRIC LIGHT CURVES AND SOLUTIONS OF W URSAE MINORIS
Results of two independent multicolor photoelectric studies of W UMi are presented. Good photometric elements are derived for each and found in veiy close agreement. D. S. H. and D. H. W. found k = 0.78 ± 0.02 whereas E.J.D.found k= 0.77 ± 0.01. All available times of minimum are examined and a new...
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| Veröffentlicht in: | Publ. Astron. Soc. Pac. 82: 10-52(Feb 1970) 1970-02, Vol.82 (484), p.10-52 |
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| container_issue | 484 |
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| container_title | Publ. Astron. Soc. Pac. 82: 10-52(Feb 1970) |
| container_volume | 82 |
| creator | DEVINNEY, EDWARD J. HALL, DOUGLAS S. WARD, DAVID H. |
| description | Results of two independent multicolor photoelectric studies of W UMi are presented. Good photometric elements are derived for each and found in veiy close agreement. D. S. H. and D. H. W. found k = 0.78 ± 0.02 whereas E.J.D.found k= 0.77 ± 0.01. All available times of minimum are examined and a new ephemeris derived. Spectroscopie complications are discussed; the range of reasonable absolute dimensions is estimated, and the primary is shown to lie above the main sequence. The (U— B), (B— V) indices indicate a spectral type for the primary of A3 ± 2, in close agreement with its known spectroscopie classifications. After correction was made for reflection, the secondary revealed an intrinsic surface brightness corresponding to a K0 (IV) star but with an untraviolet excess of ä δU-B: = 1ṃ3 ± Oṃ2. |
| doi_str_mv | 10.1086/128884 |
| format | Article |
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Good photometric elements are derived for each and found in veiy close agreement. D. S. H. and D. H. W. found k = 0.78 ± 0.02 whereas E.J.D.found k= 0.77 ± 0.01. All available times of minimum are examined and a new ephemeris derived. Spectroscopie complications are discussed; the range of reasonable absolute dimensions is estimated, and the primary is shown to lie above the main sequence. The (U— B), (B— V) indices indicate a spectral type for the primary of A3 ± 2, in close agreement with its known spectroscopie classifications. After correction was made for reflection, the secondary revealed an intrinsic surface brightness corresponding to a K0 (IV) star but with an untraviolet excess of ä δU-B: = 1ṃ3 ± Oṃ2.</description><identifier>ISSN: 0004-6280</identifier><identifier>EISSN: 1538-3873</identifier><identifier>DOI: 10.1086/128884</identifier><language>eng</language><publisher>The Astronomical Society of the Pacific</publisher><subject>Astronomical magnitude ; Coefficients ; COLOR ; Comparison stars ; Eclipses ; Fourier coefficients ; LIGHT ; Light curves ; LUMINOSITY ; N32120 -Physics-Astrophysics-Stars ; Optical reflection ; PHOTOMETRY ; Radial velocity ; SPECTRA ; STARS ; STARS/light curves for W UMi, photoelectric, (E) ; Stellar classification ; Subgiant stars</subject><ispartof>Publ. Astron. Soc. 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Astron. Soc. Pac. 82: 10-52(Feb 1970)</title><description>Results of two independent multicolor photoelectric studies of W UMi are presented. Good photometric elements are derived for each and found in veiy close agreement. D. S. H. and D. H. W. found k = 0.78 ± 0.02 whereas E.J.D.found k= 0.77 ± 0.01. All available times of minimum are examined and a new ephemeris derived. Spectroscopie complications are discussed; the range of reasonable absolute dimensions is estimated, and the primary is shown to lie above the main sequence. The (U— B), (B— V) indices indicate a spectral type for the primary of A3 ± 2, in close agreement with its known spectroscopie classifications. After correction was made for reflection, the secondary revealed an intrinsic surface brightness corresponding to a K0 (IV) star but with an untraviolet excess of ä δU-B: = 1ṃ3 ± Oṃ2.</description><subject>Astronomical magnitude</subject><subject>Coefficients</subject><subject>COLOR</subject><subject>Comparison stars</subject><subject>Eclipses</subject><subject>Fourier coefficients</subject><subject>LIGHT</subject><subject>Light curves</subject><subject>LUMINOSITY</subject><subject>N32120 -Physics-Astrophysics-Stars</subject><subject>Optical reflection</subject><subject>PHOTOMETRY</subject><subject>Radial velocity</subject><subject>SPECTRA</subject><subject>STARS</subject><subject>STARS/light curves for W UMi, photoelectric, (E)</subject><subject>Stellar classification</subject><subject>Subgiant stars</subject><issn>0004-6280</issn><issn>1538-3873</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1970</creationdate><recordtype>article</recordtype><recordid>eNo9kEFPgzAYhhujiXPqPzBpPHhDv48WKMcF2UZEukBxR9K1ELfoMJSL_94ZjJf3vTx5k_ch5BbhEUGET-gLIfgZmWHAhMdExM7JDAC4F_oCLsmVcwcARIEwIy9qK2lWPKeb9BSFopu1VDLN00SVWULzbLVWNKnLt7Sii-KZVjKvVSaLisol3dK6rBYpfc0KWWbVNbno9Idrb_56TuplqpK1l8tVlixyzyCPucdtZDvr6w47EZnYhyCOLWhu0SJjO98I4BHGYeDrILB-G3XIw7jVlhnYaQNsTu6n3d6N-8aZ_diad9Mfj60ZG46hiE7P5-RhgszQOze0XfM17D_18N0gNL-emsnTCbybwIMb--Gf4hBGXDBkPwpLW3M</recordid><startdate>19700201</startdate><enddate>19700201</enddate><creator>DEVINNEY, EDWARD J.</creator><creator>HALL, DOUGLAS S.</creator><creator>WARD, DAVID H.</creator><general>The Astronomical Society of the Pacific</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19700201</creationdate><title>TWO INDEPENDENT PHOTOELECTRIC LIGHT CURVES AND SOLUTIONS OF W URSAE MINORIS</title><author>DEVINNEY, EDWARD J. ; HALL, DOUGLAS S. ; WARD, DAVID H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1494-4d7dfd2af1f87c920599d0a4d1d133b2c804719652a55d2e7f1469ead3c0bac03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1970</creationdate><topic>Astronomical magnitude</topic><topic>Coefficients</topic><topic>COLOR</topic><topic>Comparison stars</topic><topic>Eclipses</topic><topic>Fourier coefficients</topic><topic>LIGHT</topic><topic>Light curves</topic><topic>LUMINOSITY</topic><topic>N32120 -Physics-Astrophysics-Stars</topic><topic>Optical reflection</topic><topic>PHOTOMETRY</topic><topic>Radial velocity</topic><topic>SPECTRA</topic><topic>STARS</topic><topic>STARS/light curves for W UMi, photoelectric, (E)</topic><topic>Stellar classification</topic><topic>Subgiant stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>DEVINNEY, EDWARD J.</creatorcontrib><creatorcontrib>HALL, DOUGLAS S.</creatorcontrib><creatorcontrib>WARD, DAVID H.</creatorcontrib><creatorcontrib>Univ. of Pennsylvania, Philadelphia</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Publ. Astron. Soc. Pac. 82: 10-52(Feb 1970)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>DEVINNEY, EDWARD J.</au><au>HALL, DOUGLAS S.</au><au>WARD, DAVID H.</au><aucorp>Univ. of Pennsylvania, Philadelphia</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>TWO INDEPENDENT PHOTOELECTRIC LIGHT CURVES AND SOLUTIONS OF W URSAE MINORIS</atitle><jtitle>Publ. Astron. Soc. Pac. 82: 10-52(Feb 1970)</jtitle><date>1970-02-01</date><risdate>1970</risdate><volume>82</volume><issue>484</issue><spage>10</spage><epage>52</epage><pages>10-52</pages><issn>0004-6280</issn><eissn>1538-3873</eissn><abstract>Results of two independent multicolor photoelectric studies of W UMi are presented. Good photometric elements are derived for each and found in veiy close agreement. D. S. H. and D. H. W. found k = 0.78 ± 0.02 whereas E.J.D.found k= 0.77 ± 0.01. All available times of minimum are examined and a new ephemeris derived. Spectroscopie complications are discussed; the range of reasonable absolute dimensions is estimated, and the primary is shown to lie above the main sequence. The (U— B), (B— V) indices indicate a spectral type for the primary of A3 ± 2, in close agreement with its known spectroscopie classifications. After correction was made for reflection, the secondary revealed an intrinsic surface brightness corresponding to a K0 (IV) star but with an untraviolet excess of ä δU-B: = 1ṃ3 ± Oṃ2.</abstract><pub>The Astronomical Society of the Pacific</pub><doi>10.1086/128884</doi><tpages>43</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Publ. Astron. Soc. Pac. 82: 10-52(Feb 1970), 1970-02, Vol.82 (484), p.10-52 |
| issn | 0004-6280 1538-3873 |
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| source | IOP Publishing Journals; Jstor Complete Legacy; EZB-FREE-00999 freely available EZB journals; Institute of Physics (IOP) Journals - HEAL-Link; Alma/SFX Local Collection |
| subjects | Astronomical magnitude Coefficients COLOR Comparison stars Eclipses Fourier coefficients LIGHT Light curves LUMINOSITY N32120 -Physics-Astrophysics-Stars Optical reflection PHOTOMETRY Radial velocity SPECTRA STARS STARS/light curves for W UMi, photoelectric, (E) Stellar classification Subgiant stars |
| title | TWO INDEPENDENT PHOTOELECTRIC LIGHT CURVES AND SOLUTIONS OF W URSAE MINORIS |
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