Astrometric criteria for selecting "physical members" of open clusters with low astrometric precision
Subtitle: application to NGC 559
By: by Emiel de Graeve.
Series: Vatican Observatory publications ;; v. 1, no. 16
Publisher: Specola vaticana
Published: 1979
Place of publication: Città del Vaticano
Language: eng
Number of pages: 306
Subjects: Stars -- Open clusters.; Stars -- Proper motion.
Notes: Includes bibliographical references.
Cover title.