A cool R Coronae Borealis star Z UMi
| dc.creator | Kipper, Tonu | |
| dc.creator | Klochkova, Valentina | |
| dc.date | 2007-06-22 | |
| dc.date.accessioned | 2026-07-07T10:36:11Z | |
| dc.date.available | 2026-07-07T10:36:11Z | |
| dc.description | The high resolution spectra of a R CrB type star Z UMi are analysed. The atmospheric parameters of Z UMi are estimated: Teff=5250+/-250K and log g=0.5+/-0.3. This places Z UMi among the coolest R CrB stars. The hydrogen deficiency of Z UMi is confirmed. The abundances of other elements resemble those found for the minority group of R CrB stars. We note very low iron abundance, [Fe/H]=-1.85, and an excess of lithium, [Li/Fe]=+1.9. | |
| dc.description | 11 pages, 3 figures, 2 tables | |
| dc.identifier | https://arxiv.org/abs/0706.3271 | |
| dc.identifier | http://arxiv.org/abs/0706.3271 | |
| dc.identifier | BalticAstron.15:531-537,2006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179968 | |
| dc.subject | Astrophysics | |
| dc.title | A cool R Coronae Borealis star Z UMi | |
| dc.type | text |