Observations and analysis of the system R Canis Majoris

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Budding E., Butland R.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol.418, no.3, pp.1764-1773, 2011 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 418 Issue: 3
• Publication Date: 2011
• Doi Number: 10.1111/j.1365-2966.2011.19597.x
• Journal Name: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.1764-1773
• Çanakkale Onsekiz Mart University Affiliated: No

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.