SIMBAD references

2014AJ....148...72T - Astron. J., 148, 72 (2014/October-0)

Imaging survey of subsystems in secondary components to nearby southern dwarfs.

TOKOVININ A.

Abstract (from CDS):

To improve the statistics of hierarchical multiplicity, secondary components of wide nearby binaries with solar-type primaries were surveyed at the SOAR telescope for evaluating the frequency of subsystems. Images of 17 faint secondaries were obtained with the SOAR Adaptive Module that improved the seeing; one new 0.''2 binary was detected. For all targets, photometry in the g', i', z' bands is given. Another 46 secondaries were observed by speckle interferometry, resolving 7 close subsystems. Adding literature data, the binarity of 95 secondary components is evaluated. We found that the detection-corrected frequency of secondary subsystems with periods in the well-surveyed range from 103 to 105 days is 0.21±0.06–same as the normal frequency of such binaries among solar-type stars, 0.18. This indicates that wide binaries are unlikely to be produced by dynamical evolution of N-body systems, but are rather formed by fragmentation.

Abstract Copyright:

Journal keyword(s): binaries: general

VizieR on-line data: <Available at CDS (J/AJ/148/72): table2.dat table3.dat table4.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD; there are some issues with cross-identifications or classifications.

CDS comments: The reference stars in Figure 2 are not in Simbad.

Simbad objects: 103

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2020.10.25-21:14:39

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