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Speckle Observations of Binary Stars with the WIYN Telescope. III. A Partial Survey of A, F, and G Dwarfs
Two hundred thirty nearby main-sequence stars with spectral types in therange of A to G have been observed by way of speckle interferometryusing the WIYN 3.5 m telescope at Kitt Peak, Arizona. The stars had noprevious mention of duplicity in the literature. Of those observed, 14showed clear evidence of a companion, and 63 were classified assuspected nonsingle based on a power spectrum analysis. The remainingstars discussed show no evidence of duplicity to the limit of thedetection system in high-quality observations. The WIYN Observatory is ajoint facility of the University of Wisconsin-Madison, IndianaUniversity, Yale University, and the National Optical AstronomyObservatory.
| Classification of Composite Spectra.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJ...134..222S&db_key=AST
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Osservazione e dati astrometrici
| Costellazione: | Freccia |
| Ascensione retta: | 20h07m28.92s |
| Declinazione: | +17°01'14.0" |
| Magnitudine apparente: | 7.645 |
| Distanza: | 4166.667 parsec |
| Moto proprio RA: | -1.6 |
| Moto proprio Dec: | -6.6 |
| B-T magnitude: | 8.55 |
| V-T magnitude: | 7.72 |
Cataloghi e designazioni:
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