2001/10/24 by Zhenyu Wu, Z. Y. Wu, K. P. Tian +6 · 34 citations
Physics and Astronomy · #Adaptive optics and wavefront sensing #Aperture (computer memory) #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Cluster (spacecraft) #Epoch (astronomy) #Observatory #Open cluster #Physics #Proper motion #Star cluster #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20011474
published in Astronomy and Astrophysics 381(2), 464-471 (EDP Sciences) · 8 pages, 7 figures,accepted for publication in A&A
arxiv created 2001/10/24 · openalex publication_date 2002/01/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Absolute proper motions, their corresponding errors and membership probabilities of 501 stars in the intermediate-age open cluster NGC 2548 region are determined from MAMA measurements of 10 photographic plates. The plates have the maximum epoch difference of 82 years and they were taken with the double astrograph at Zô-Sè station of Shanghai Observatory, which has an aperture of 40 cm and a plate scale of 30´´ mm-1. The average proper motion precision is 1.18 mas yr-1. These proper motions are used to determine the membership probabilities of stars in the region. The number of stars with membership probabilities higher than 0.7 is 165.