Obs. with Differential Speckle Survey Instrument. X. Virtual Observatory Resource

Authors
  1. Horch E.P.
  2. Broderick K.G.
  3. Casetti-Dinescu D.I.
  4. Henry T.J.
  5. Fekel F.C.,Muterspaugh M.W.
  6. Willmarth D.W.
  7. Winters J.G.
  8. van Belle G.T.
  9. Clark C.A.,Everett M.E.
  10. Published by
    CDS
Abstract

This paper details speckle observations of binary stars taken at the Lowell Discovery Telescope, the WIYN telescope, and the Gemini telescopes between 2016 January and 2019 September. The observations taken at Gemini and Lowell were done with the Differential Speckle Survey Instrument (DSSI), and those done at WIYN were taken with the successor instrument to DSSI at that site, the NN-EXPLORE Exoplanet Star and Speckle Imager (NESSI). In total, we present 378 observations of 178 systems, and we show that the uncertainty in the measurement precision for the combined data set is ~2mas in separation, ~1{deg}-2{deg} in position angle depending on the separation, and ~0.1mag in magnitude difference. Together with data already in the literature, these new results permit 25 visual orbits and one spectroscopic- visual orbit to be calculated for the first time. In the case of the spectroscopic-visual analysis, which is done on the ternary star HD173093, we calculate masses with a precision of better than 1% for all three stars in that system. Twenty-one of the visual orbits calculated have a K-dwarf as the primary star; we add these to the known orbits of K-dwarf primary stars and discuss the basic orbital properties of these stars at this stage. Although incomplete, the data that exist so far indicate that binaries with K-dwarf primaries tend not to have low-eccentricity orbits at separations of one to a few tens of astronomical units, that is, on solar system scales.

Keywords
  1. multiple-stars
  2. dwarf-stars
  3. k-stars
  4. astrometry
  5. visible-astronomy
  6. spectroscopy
  7. radial-velocity
  8. stellar-spectral-types
Bibliographic source Bibcode
2021AJ....161..295H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/295
IVOA Identifier IVOID
ivo://CDS.VizieR/J/AJ/161/295
Document Object Identifer DOI
doi:10.26093/cds/vizier.51610295

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/295
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History

2021-09-08T08:11:54Z
Resource record created
2021-09-08T08:11:54Z
Created
2022-09-30T21:44:05Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr