skip to main content

SciTech ConnectSciTech Connect

Title: SPECKLE INTERFEROMETRY AT SOAR IN 2014

The results of speckle interferometric observations at the Southern Astrophysical Research Telescope (SOAR) telescope in 2014 are given. A total of 1641 observations were taken, yielding 1636 measurements of 1218 resolved binary and multiple stars and 577 non-resolutions of 441 targets. We resolved for the first time 56 pairs, including some nearby astrometric or spectroscopic binaries and ten new subsystems in previously known visual binaries. The calibration of the data is checked by linear fits to the positions of 41 wide binaries observed at SOAR over several seasons. The typical calibration accuracy is 0.°1 in angle and 0.3% in pixel scale, while the measurement errors are on the order of 3 mas. The new data are used here to compute 194 binary star orbits, 148 of which are improvements on previous orbital solutions and 46 are first-time orbits.
Authors:
 [1] ; ;  [2] ;  [3] ;  [4]
  1. Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile)
  2. U.S. Naval Observatory, 3450 Massachusetts Ave., Washington, DC (United States)
  3. Universidad de Chile, Casilla 36-D, Santiago (Chile)
  4. Department of Physics, Southern Connecticut State University, 501 Crescent Street, New Haven, CT 06515 (United States)
Publication Date:
OSTI Identifier:
22520174
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 150; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; ASTROPHYSICS; BINARY STARS; CALIBRATION; ERRORS; INTERFEROMETRY; ORBITS; RESOLUTION; TELESCOPES