Metal abundances of Draco and eight galactic globular clusters

Journal Article · Mon Sep 01 00:00:00 EDT 1975 · Astrophys. J., Lett., v. 200, no. 2, pp. L63-L66

DOI:https://doi.org/10.1086/181897· OSTI ID:4199815

Canterna, R

Photometric metal abundances of individual giants in the Draco galaxy and eight globular clusters have been obtained using the C, M, T$sub 1$, T$sub 2$ photometric system. This new broad-band system was designed specifically for photometric abundance determinations of G and K giants. The results show that Fe/ H=-3.0 for the Draco giants, much lower than M92. M22 is metal-deficient, Fe/H=- 2.0, in agreement with its horizontal-branch morphology, but inconsistent with the slope of the red-giant branch. Fe/H of NGC 4147 and NGC 7006 is similar to M22.

• Research Organization: Department of Astronomy, University of Washington
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-003741
• OSTI ID: 4199815
• Journal Information: Astrophys. J., Lett., v. 200, no. 2, pp. L63-L66, Other Information: Orig. Receipt Date: 30-JUN-76
• Country of Publication: United States
• Language: English

Related Subjects

N56200* -Physics (Astrophysics & Cosmology)-Stars
N56500 -Physics (Astrophysics & Cosmology)-Galaxies
640102* -Physics Research-Astrophysics & Cosmology-Stars
*GIANT STARS- CHEMICAL COMPOSITION
*STAR CLUSTERS- CHEMICAL COMPOSITION
GALAXIES
HELIUM
IRON
LUMINOSITY
METALS
MILKY WAY
PHOTOMETRY
VARIATIONS