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Observations of Binary Stars with the Differential Speckle Survey Instrument. VII. Measures from 2010 September to 2012 February at the WIYN Telescope

Horch, Elliott P. and Casetti-Dinescu, Dana I. and Camarata, Matthew A. and Bidarian, Akbar and van Altena, William F. and Sherry, William H. and Everett, Mark E. and Howell, Steve B. and Ciardi, David R. and Henry, Todd J. and Nusdeo, Daniel A. and Winters, Jennifer G. (2017) Observations of Binary Stars with the Differential Speckle Survey Instrument. VII. Measures from 2010 September to 2012 February at the WIYN Telescope. Astronomical Journal, 153 (5). Art. No. 212. ISSN 1538-3881.

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We report on speckle observations of binary stars carried out at the WIYN Telescope over the period from 2010 September through 2012 February, providing relative astrometry for 2521 observations of 883 objects, 856 of which are double stars and 27 of which are triples. The separations measured span a range of 0.01–1.75 arcsec. Wavelengths of 562, 692, and 880 nm were used, and differential photometry at one or more of these wavelengths is presented in most cases. 66 components were resolved for the first time. We also estimate detection limits at 0.2 and 1.0 arcsec for high-quality observations in cases where no companion was seen, a total of 176 additional objects. Detection limits vary based on observing conditions and signal-to-noise ratio, but are approximately 4 mag at 0.2 arcsec and 6 mag at 1.0 arcsec on average. Analyzing the measurement precision of the data set, we find that the individual separations obtained have linear measurement uncertainties of approximately 2 mas, and photometry is uncertain to approximately 0.1 mag in general. This work provides fundamental, well-calibrated data for future orbit and mass determinations, and we present three first orbits and total mass estimates of nearby K-dwarf systems as examples of this potential.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Horch, Elliott P.0000-0003-2159-1463
Everett, Mark E.0000-0002-0885-7215
Howell, Steve B.0000-0002-2532-2853
Ciardi, David R.0000-0002-5741-3047
Winters, Jennifer G.0000-0001-6031-9513
Additional Information:© 2017 American Astronomical Society. Received 2017 February 17. Accepted 2017 March 10. Published 2017 April 14. The authors would like to thank all of the excellent staff at the WIYN telescope for their help during our observing runs. We were privileged to work with professionals of such dedication and skill. We used the SIMBAD database, the Washington Double Star Catalog, the Fourth Catalog of Interferometric Measures of Binary Stars, and the Sixth Orbit Catalog in the preparation of this paper. We gratefully acknowledge the role of the Kepler Science Office in upgrading DSSI to the two-EMCCD mode used here, support from National Science Foundation grant AST-0908125, which funded the observations discussed here, and grant AST-1517824, which funded the completion of the analysis and publication of this work.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Issue or Number:5
Record Number:CaltechAUTHORS:20170413-143508403
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Official Citation:Elliott P. Horch et al 2017 AJ 153 212
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76558
Deposited By: Ruth Sustaita
Deposited On:13 Apr 2017 21:55
Last Modified:09 Mar 2020 13:19

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