The cool galactic R Coronae Borealis variable DY Persei

L. Začs, W. P. Chen, O. Alksnis, D. Kinoshita, F. A. Musaev, T. Brice, K. Sanchawala, H. T. Lee, C. W. Chen

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)


Results of first CCD photometry during the recent deep light decline, and high-resolution spectroscopy, are presented Dr DY Persei. The spectra show variable blueshifted features in the sodium D lines. The CI lines are strong whereas neutroncapture elements are not enhanced. The isotopic 13CN(2,0) lines relative to 12CN are of similar strength with those for the carbon star U Hya. All these confirm the RGB nature of DY Per and the existence of ejected clouds. At least two clouds are revealed at -197.3 and -143.0 km s-1. A star was detected about 074 to the west and 2″.5 to the north from DY Per. This anonymous companion, with observed colour indices (B - V) = 0.68 and (V - R) ≃ 1.1, may be a foreground star.

頁(從 - 到)L13-L16
期刊Astronomy and Astrophysics
出版狀態已出版 - 8月 2005


深入研究「The cool galactic R Coronae Borealis variable DY Persei」主題。共同形成了獨特的指紋。