CCD speckle observations of binary stars from the southern hemisphere. III. Differential photometry

Show full item record

Title: CCD speckle observations of binary stars from the southern hemisphere. III. Differential photometry
Author: Horch, Elliott; Ninkov, Zoran; Franz, Otto
Abstract: Two hundred seventy-two magnitude di†fference measures of 135 double star systems are presented. The results are derived from speckle observations using the Bessel V and R passbands and a fast readout CCD camera. Observations were taken at two 60 cm telescopes, namely the Helen Sawyer Hogg Telescope, formerly at Las Campanas, Chile, and the Lowell-Tololo Telescope at the Cerro Tololo Inter- American Observatory, Chile. The data analysis method is presented and, in comparing the results to those of Hipparcos as well as to recent results using adaptive optics, we find very good agreement. Overall, the measurement precision appears to be dependent on seeing and other factors but is generally in the range of 0.10-0.15 mag for single observations under favorable observing conditions. In four cases, multiple observations in both V and R allowed for the derivation of component V-R colors with uncertainties of 0.11 mag or less. Spectral types are assigned and preliminary e†ffective temperatures are estimated in these cases.
Description: Copyright 2001 University of Chicago Press - The Astronomical Journal. Article may also be accessed from the publisher's website: http://www.journals.uchicago.edu/AJ/journal/contents/v121n3.html
Record URI: http://hdl.handle.net/1850/3021
Date: 2001-03

Files in this item

Files Size Format View
ZNinkovArticle03-2001.pdf 411.9Kb PDF View/Open

The following license files are associated with this item:

This item appears in the following Collection(s)

Show full item record

Search RIT DML


Advanced Search

Browse