Reduced-proper-motion diagrams. II. Luyten's white-dwarf catalog

view Abstract Citations (24) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Reduced-Proper Diagrams. II. Luyten's White-Dwarf Catalog Jones, Eric M. Abstract Spectroscopic and photometric surveys by Eggen, Greenstein, and others have yielded almost no classical degenerates with Luyten color class redder than class g. Reduced-proper-motion diagrams made from Luyten's catalog and from a large number of photometrically observed objects show that Luyten's selection criterion will naturally yield a large proportion of subdwarfs and "Eggenites" among the red and yellow candidates. New selection criteria relating reduced proper motion and color class or B - V color index are proposed to distinguish classical degenerates from the mixed subdwarf-Eggenite sequences. Publication: The Astrophysical Journal Pub Date: November 1972 DOI: 10.1086/151701 Bibcode: 1972ApJ...177..245J full text sources ADS |