HD 153720 – A SB2 system with twin metallic-line components A. V. Yushchenko, V. F. Gopka, V. L. Khokhlova, D. L. Lambert, C. Kim and Y. W. Kang A&A, 425 1 (2004) 171-177 Published online: 10 September 2004 DOI: 10.1051/0004-6361:20035922