Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...307..738h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 307, Aug. 15, 1986, p. 738-749.
Astronomy and Astrophysics
Astrophysics
54
Color-Magnitude Diagram, Globular Clusters, Main Sequence Stars, Stellar Evolution, Charge Coupled Devices, Chronology, Stellar Models, Stellar Spectrophotometry
Scientific paper
A new color-magnitude (C-M) diagram for main-sequence stars in the globular cluster M 92 is presented. The observations upon which this diagram is based were obtained with an RCA CCD at the 3.6 m Canada-France-Hawaii telescope. These new data refine the position of the cluster ridge lines in the lower main sequence, the subgiant branch, and the lower giant branch. A comparison of the new C-M diagram with new theoretical isochrones shows that the shapes of the models are in good agreement with the observations, but a large shift in color is required to bring the theory and observations into agreement. Possible explanations for this discrepancy are discussed. The new M 92 observations and recent work on M13, M15, and 47 Tuc combined with the new isochromes show that the globular cluster distance scale developed by Sandage from the RR Lyrae period-luminosity-amplitude relation is consistent for the relative distances if all the clusters are the same age.
Christian Carol A.
Heasley James N. Jr.
No associations
LandOfFree
The main-sequence color-magnitude diagram of M 92 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The main-sequence color-magnitude diagram of M 92, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The main-sequence color-magnitude diagram of M 92 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-891898