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| dc.creator | Turner, David Gerald, 1945- | |
| dc.creator | Kovtyukh, V. V. | |
| dc.creator | Usenko, I. A. | |
| dc.creator | Gorlova, N. I. | |
| dc.date.accessioned | 2018-02-23T16:08:42Z | |
| dc.date.available | 2018-02-23T16:08:42Z | |
| dc.date.issued | 2013-01-01 | |
| dc.identifier.issn | 2041-8205 | |
| dc.identifier.uri | http://library2.smu.ca/handle/01/27287 | |
| dc.description | Publisher's version/PDF | |
| dc.description.abstract | <p>A previously derived photometric parallax of 10.10 ± 0.20 mas, d = 99 ± 2 pc, is confirmed for Polaris by a spectroscopic parallax derived using line ratios in high dispersion spectra for the Cepheid. The resulting estimates for the mean luminosity of ⟨M<sub>V</sub>⟩ = −3.07 ± 0.01 s.e., average effective temperature of ⟨T<sub>eff</sub>⟩ = 6025 ± 1 K s.e., and intrinsic color of (⟨B⟩ − ⟨V⟩)<sub>0</sub> = +0.56 ± 0.01 s.e., which match values obtained previously from the photometric parallax for a space reddening of E<sub>B−V</sub> = 0.02 ± 0.01, are consistent with fundamental mode pulsation for Polaris and a first crossing of the instability strip, as also argued by its rapid rate of period increase. The systematically smaller <em>Hipparcos</em> parallax for Polaris appears discrepant by comparison.</p> | |
| dc.description.provenance | Submitted by Betty McEachern (betty.mceachern@smu.ca) on 2018-02-23T16:08:42Z No. of bitstreams: 1 Turner_David_G_article_2013_b.pdf: 222490 bytes, checksum: b979249f2feb097d12ac841bd42bbe98 (MD5) | en |
| dc.description.provenance | Made available in DSpace on 2018-02-23T16:08:42Z (GMT). No. of bitstreams: 1 Turner_David_G_article_2013_b.pdf: 222490 bytes, checksum: b979249f2feb097d12ac841bd42bbe98 (MD5) Previous issue date: 2013 | en |
| dc.language.iso | en | en_CA |
| dc.publisher | IOP Publishing Limited | en_CA |
| dc.relation.uri | https://dx.doi.org/10.1088/2041-8205/762/1/L8 | |
| dc.subject.lcsh | Polestar | |
| dc.subject.lcsh | Cepheids | |
| dc.title | The pulsation mode of the Cepheid Polaris | en_CA |
| dc.type | Text | en_CA |
| dcterms.bibliographicCitation | Astrophysical Journal Letters 762(1), L8. (2013) | en_CA |
