One of our on-going program is the observation of binary systems with one component chemically peculiar stars. The main goal of this project is to resolve the orbit of SB1 and/or SB2 systems by means of accurate radial velocity measurements.
The first paper of this series has been published in 1999:
F. Leone,
G. Catanzaro
1999,
Astronomy and Astrophysics, 343, 273
The following pictures have been extracted from it (click to enlarge).
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HD 11753 |
HD 15144 |
HD 25267 |
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 HD 37017 |
 HD 142096 |
 HD 189178 |
A new project concerns the study of SB2 systems with HgMn components. The first object analyzed was HD191110, whose radial velocities curves of both components are shown in the following figure:
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P = 9.34661 days e = 0.1 w = 220° g = -8.31 km s-1 mA/mB = 1.08 |
more details could be found in the section Abundances of this site or in the paper:
HD 191110 a SB2
system with Hg and HgMn components.
Orbital elements and abundance analysis.
G. Catanzaro,
F. Leone, P. Leto
2003,
Astronomy and Astrophysics, 407, 669
New results about the study of SB systems with a HgMn component were obtained by our group and published in:
Orbital solutions
for SB2
systems with a HgMn component.
G. Catanzaro,
P. Leto
2004, Astronomy and
Astrophysics, 416, 661
examples of the studied systems have been reported in the following figures
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| HD 358 | HD 32964 | HD 33647 | HD 173524 | HD 174933 | HD 216494 |
