Classical Cepheids and the Spiral Structure of the Milky Way

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dc.creator Dambis, A.K.
dc.creator Berdnikov, L.N.
dc.creator Efremov, Yu M.
dc.creator Kniazev, A. Yu
dc.creator Rastorguev, A.S.
dc.creator Glushkova, E.V.
dc.creator Kravtsov, V.V.
dc.creator Turner, David Gerald, 1945-
dc.creator Majaess, Daniel J.
dc.creator Sefako, R.
dc.date.accessioned 2024-09-18T16:32:22Z
dc.date.available 2024-09-18T16:32:22Z
dc.date.issued 2015-09-13
dc.identifier.issn 1063-7737
dc.identifier.issn 1562-6873
dc.identifier.uri https://dx.doi.org/10.1134/S1063773715090017
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/32035
dc.description Published version en_CA
dc.description.abstract <p><span>We use data on space distribution of the currently most complete sample of Cepheids with reliable distances (565 stars), located within ~5 kpc from the Sun, to study the spiral pattern of the Milky Way galaxy. We estimate the pitch angle as 9&deg;&minus;10&deg;; the most accurate estimate, <em>i</em> = 9.5&deg; &plusmn; 0.1&deg;, was obtained assuming the existence of a global four-armed spiral pattern; the solar phase angle in the spiral pattern is &chi; ⊙ = &minus;121&deg; &plusmn; 3&deg;. Comparing positions of the spiral arms delineated by classical Cepheids and galactic masers, with the age difference of these objects in mind, we estimate the rotation angular speed of the spiral pattern to be &Omega;<sub><em>P</em></sub> = 25.2 &plusmn; 0.5 km s<sup>&minus;1</sup>kpc<sup>&minus;1</sup>.</span></p> en_CA
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dc.description.provenance Made available in DSpace on 2024-09-18T16:32:22Z (GMT). No. of bitstreams: 1 Turner_David_B._2015.pdf: 1557084 bytes, checksum: 5026f9b0663bddea193047739b5bb7ae (MD5) Previous issue date: 2015-10 en
dc.language.iso en en_CA
dc.publisher Pleiades Publishing en_CA
dc.relation.uri DOI: 10.1134/S1063773715090017
dc.rights The version of record of this article, first published in Astronomy Letters, is available online at Publisher’s website: https://doi.org/10.1134/S1063773715090017
dc.subject.lcsh Cepheids
dc.subject.lcsh Milky Way
dc.title Classical Cepheids and the Spiral Structure of the Milky Way en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astronomy letters 41 (9), 489-500. (2015) en_CA
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The version of record of this article, first published in Astronomy Letters, is available online at Publisher’s website: https://doi.org/10.1134/S1063773715090017
 
Published Version: DOI: 10.1134/S1063773715090017
 
 

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