Speckle Interferometry at the U.S. Naval Observatory. XXIII

Autor: Mason, Brian D., Hartkopf, William I., Urban, Sean E., Josties, Jordan D.
Rok vydání: 2018
Předmět:
Zdroj: AJ 156, 240, 2018
Druh dokumentu: Working Paper
DOI: 10.3847/1538-3881/aae484
Popis: The results of 3,989 intensified CCD observations of double stars, made with the 26-inch refractor of the U.S. Naval Observatory, are presented. Each observation of a system represents a combination of over two thousand short-exposure images. These observations are averaged into 1,911 mean relative positions and range in separation from 0.289 to 128.638, with a median separation of 8.669. Four orbits are improved. This is the 23rd in this series of papers and covers the period 4 January 2017 through 13 September 2017.
Comment: 73 pages, 8 tables, 2 figures
Databáze: arXiv