Observations and analysis of the system R Canis Majoris
| dc.contributor.author | Budding, E. | |
| dc.contributor.author | Butland, R. | |
| dc.date.accessioned | 2025-01-27T20:20:52Z | |
| dc.date.available | 2025-01-27T20:20:52Z | |
| dc.date.issued | 2011 | |
| dc.department | Çanakkale Onsekiz Mart Üniversitesi | |
| dc.description.abstract | New high-resolution spectroscopy of the Algol-type binary R CMa is presented and reduced, allowing a re-analysis of this puzzling close pair. New radial velocity curves are in better agreement with the results of Glazunova, Yushchenko & Mrktichian, which revise upwards the relatively low masses of Tomkin. We find the following main parameters: M1= 1.67 +/- 0.08, M2= 0.22 +/- 0.07; R1= 1.78 +/- 0.03, R2= 1.22 +/- 0.07; L1= 8.2 +/- 0.2, L2= 0.49 +/- 0.01 (solar units); and photometric parallax 22 +/- 1 mas. Certain anomalous features of the system remain, however, in particular the combination of low period P and low mass ratio q. This may be related to the third body known to attend the close eclipsing pair, for which we also provide a new astrometric analysis and accompanying numerical results: M(3) = 0.8 +/- 0.1; R(3) = 0.83 +/- 0.07; L(3) = 0.4 +/- 0.1 ( solar units). The ` R CMa type', within the context of Algol evolution, may be seen as involving an unusually low q, P combination. | |
| dc.description.sponsorship | Department of Physics, University of Canakkale, Turkey | |
| dc.description.sponsorship | We acknowledge interesting discussions with Peter Eggleton that stimulated much of our desire to re-investigate R Canis Majoris. Generous allocations of time on the 1-m McLennnan Telescope and HERCULES at the Mt John University Observatory were made available through its TAC and supported by its Director, Dr K. Pollard. Useful assistance at the telescope were provided by the MJUO management (A. Gilmore and P. Kilmartin). Considerable assistance with the use and development of the HRSP software (leading up to the presently used version 4) was given by its author Dr J. Skuljan. Members of staff of the Department of Physics, 18th March University of Canakkale, Turkey have continued with encouragement and support for this programme, particularly Professors A. Erdem and O. Demircan. We are grateful to Professor J. Kreiner for the provision of recent (unpublished) time of minimum data. | |
| dc.identifier.doi | 10.1111/j.1365-2966.2011.19597.x | |
| dc.identifier.endpage | 1773 | |
| dc.identifier.issn | 0035-8711 | |
| dc.identifier.issue | 3 | |
| dc.identifier.startpage | 1764 | |
| dc.identifier.uri | https://doi.org/10.1111/j.1365-2966.2011.19597.x | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12428/21834 | |
| dc.identifier.volume | 418 | |
| dc.identifier.wos | WOS:000298088000024 | |
| dc.identifier.wosquality | Q1 | |
| dc.indekslendigikaynak | Web of Science | |
| dc.language.iso | en | |
| dc.publisher | Wiley-Blackwell | |
| dc.relation.ispartof | Monthly Notices of The Royal Astronomical Society | |
| dc.relation.publicationcategory | info:eu-repo/semantics/openAccess | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.snmz | KA_WoS_20250125 | |
| dc.subject | methods: data analysis | |
| dc.subject | binaries: close | |
| dc.subject | stars: individual: R CMa | |
| dc.subject | Galaxy: stellar content | |
| dc.title | Observations and analysis of the system R Canis Majoris | |
| dc.type | Article |
