High-resolution optical spectroscopy of RS Ophiuchi during 2008-2009

被引：6

作者：

Somero, A. ^{[1
]}

Hakala, P. ^{[2
]}

Wynn, G. A. ^{[3
]}

机构：

[1] Univ Turku, Dept Phys & Astron, Tuorla Observ, Vaisalantie 20, FI-21500 Piikkio, Finland

[2] Univ Turku, Finnish Ctr Astron ESO FINCA, Vaisalantie 20, FI-21500 Piikkio, Finland

[3] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 464卷 / 03期

基金：

芬兰科学院;

关键词：

accretion; accretion discs; techniques: spectroscopic; binaries: symbiotic; stars: individual: RS Oph; novae; cataclysmic variables; IA SUPERNOVAE; RECURRENT NOVAE; DISC INSTABILITY; OPH; RATIO;

D O I：

10.1093/mnras/stw2551

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

RS Ophiuchi (RS Oph) is a symbiotic variable and a recurrent nova (RN). We have monitored it with the Nordic Optical Telescope and obtained 30 high-resolution (R = 46 000) optical spectra over one orbital cycle during quiescence. To our knowledge, this is the best-sampled high-resolution spectroscopic data set of RS Oph over one orbital period. We do not detect any direct signatures of an accretion disc such as double peaked emission lines, but many line profiles are complex consisting of superimposed emission and absorption components. We measure the spin of the red giant and conclude that it is tidally locked to the binary orbit. We observe Na I absorption features, probably arising from the circumbinary medium, that has been shaped by previous RN outbursts. We do not detect any intrinsic polarization in the optical wavelengths.

引用

页码：2784 / 2795

页数：12

共 30 条

[1] Disc instability in RS Ophiuchi: a path to Type Ia supernovae [J].