R-I data comparisons for the Hyades and merged VRI data for M67

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114802· OSTI ID:6921232

Taylor, B J; Joner, M D

The cluster (R-I) data of Joner and Taylor (1988) are compared with measurements from other sources. For the Hyades, no case is found in which other data definitely agree in both scale and zero point. For M67, a merged (R-I) and (V-R) catalog for the evolved stars can be compiled. These analyses yield one instance of disagreement between sets of Eggen (1968-1986) R-I data, and two more in which such data disagree with measurements by others. A fourth example of this kind exists for the Hyades, and a fifth example exists for field stars. The combined evidence suggests that there have been recurring systematics in Eggen's (R-I) measurements. 46 references.

• Research Organization: Brigham Young Univ., Provo, UT (USA)
• OSTI ID: 6921232
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 96; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
ELECTROMAGNETIC RADIATION
INFRARED SPECTRA
LEAST SQUARE FIT
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
SPECTROPHOTOMETRY
STAR CLUSTERS
STAR EVOLUTION
STARS
VARIABLE STARS