Abstract
74 Aqr (=HD 216494) is a stable hierarchical triple system composed by a spectroscopic binary, with HgMn primary, plus a single third component discovered during a speckle interferometric survey carried out by McAlister et al. [6]. The most recent set of parameters for the outer orbit has been given by Mason [4]. The solution for the SB2 pair has been improved recently by Catanzaro & Leto [2] who determined P = 3.429619 ±0.000004 days and M A /M B = 1.186 ±0.005.
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References
Catanzaro G., Leone F., 2006, MNRAS, in press
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Catanzaro, G., Leone, F. (2008). The SB3 Star 74 Aqr: Abundances and Magnetic Field. In: Santos, N.C., Pasquini, L., Correia, A.C.M., Romaniello, M. (eds) Precision Spectroscopy in Astrophysics. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-75485-5_57
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DOI: https://doi.org/10.1007/978-3-540-75485-5_57
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